Grizzly G0668 Owner's manual

Grizzly G0668 Owner's manual
READ THIS FIRST
Model G0668
***IMPORTANT UPDATE***
For Machines Mfd. Since 08/18
and Owner's Manual Revised 02/08
For questions or help with this product contact Tech Support at (570) 546-9663 or [email protected]
The following changes were recently made since the owner's manual was printed:
•
Added lower blade guard.
Aside from this information, all other content in the owner's manual applies and MUST be read and understood for your own safety. IMPORTANT: Keep this update with the owner's manual for future reference.
For questions or help, contact our Tech Support at (570) 546-9663 or [email protected]
New Parts
36
37
38
REF PART #
DESCRIPTION
36
37
38
LOWER BLADE GUARD SET
PHLP HD SCR M6-1 X 10
FLAT WASHER 6MM
P0668036
P0668037
P0668038
COPYRIGHT © MAY, 2019 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#JL20398 PRINTED IN TAIWAN
READ THIS FIRST
Model G0668
***IMPORTANT UPDATE***
For Machines Mfd. Since June, 2008
and Owner's Manual Printed February, 2008
For questions or help with this product contact Tech Support at (570) 546-9663 or [email protected]
We recently made the following changes to the Model G0668:
•
•
•
•
Revised electrical & control panel wiring diagram and photos.
Revised welding station wiring diagram.
Changed transformer manufacturer.
Revised electrical parts.
Aside from the information contained in this update, all other content in the owner's manual applies to this
machine. For your own safety, you MUST read and understand this update and the applicable owner's
manual. Keep this update for future reference!
If you have any further questions about this manual update or the changes made to the machine, contact
our Technical Support at (570) 546-9663 or email [email protected]
Revised Electrical Parts
348V2
347V2
30V2
32-1V2
32V2
4-1V2
4-2V2
4-4V2
4-3V2
REF
PART #
DESCRIPTION
4-1V2
4-2V2
4-3V2
4-4V2
30V2
32V2
32-1V2
347V2
348V2
P0668004-1V2
P0668004-2V2
P0668004-3V2
P0668004-4V2
P0668030V2
P0668032V2
P0668032-1V2
P0668347V2
P0668348V2
POWER SWITCH W/KEY NHD CB-10 V2.06.08
POWER LAMP NHD-22 V2.06.08
E-STOP BUTTON NHD CB-01 V2.06.08
MOTOR ON BUTTON NHD CB-10 V2.06.08
TRANSFORMER YJ A174-0055 V2.01.13
RELAY STON MY4S 24V 3-5A V2.01.13
RELAY HOLDER STON PYF14AE V2.01.13
ANNEALING PUSH BUTTON V2.06.08
WELDING PUSH BUTTON V2.06.08
COPYRIGHT © MAY, 2017 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#MN18905 PRINTED IN TAIWAN
Rd
Rd
Control Panel
(see Figure 4
on Page 5)
Rd
1
Power
Lamp
Rd
NHD-22
NHD CB-10
24V
Power
Switch
Revised Electrical & Control Panel
Wiring Diagram
440V
220V
0V
0V
12V
0
24V
Emergency
Stop Button
24V
2
2
3
1
NHD CB-10
NHD CB-01
Start
Button
415V
T2
R2
Grnd
1
0V
Transformer
YJ A174-0055
380V
0V
220V
0
COLOR KEY
Black
White
Green
Red
Yel/Grn
0V
12
0
1
U
Bk
Wt
Gn
Rd
Yg
3L/2
2
A2
5L/3
2T/1
4T/2
6T/3
U
V
W
R
T
Fuse 3A
1L/1
T
13NO
NHD C120 24V
S
Contactor
R
A1
Fuse 3A
V
8
7
6
5
Relay
Arita MY4S 24V 3-5A
11
12
11
9
10
R1
14NO
3
A2
14
S1
T2
13
0
To Welding Station
(see Photo & Wiring
Diagram on Page 46)
R2
0
3
Ground
U
R
V
Bk
W
S
T
S
T
R
R S T
Grnd
U
Bk
V
W
W
Bk
Bk
Bk
R1
S1
U V
S1
R1
Connect the
manufactured
leg of a power
converter
to the
"S" terminal
here.
-2-
Bk
R3 S3
R3
Bk
To Inverter
(see Wiring
Diagram on
Page 43)
S3
Bk
Bk
Bk
Bk
To Motor Fan
(see Photo & Wiring
Diagram on Page 45)
Wt
220V
3-Phase
Power
Hot
Ground
G
Hot
X
Z
W
Hot
NEMA 15-15 Plug
(As Recommended)
G0668 Update (Mfd. Since 06/08)
Right
Welding
Clamp
Welding
Button
COM
COM
NO
NO
NC
Left
Welding
Clamp
NC
LIMIT
SWITCH
NC NO
COM
Annealing Button
Revised Welding Station Wiring Diagram
Bk
Yl
Yl
Yl
1
Bk
1
2
3
4
5
6
Figure 1. Welding station wiring.
Yl
Bk
Bk
S1
R1
To Electrical Panel
(see Page 2)
220V Transformer
Start Capacitor
3MFD 250VAC
NO
Gy
Grinder
Motor
4
FFO
Grinder
Switch
6
COLOR KEY
Gn
2
1
3
5
Black
Bk
White
Wt
Green
Gn
Blue
G0668 Update (Mfd. Since 06/08)
Red
Gray
Yellow
Rd
Gy
Yl
Bu
-3-
Revised Inverter Wiring Diagram
COLOR KEY
Black
TSAF
Bk
White
Wt
Green
Gn
Red
Blue
Yellow
Rd
Bu
Yl
WOLS
Figure 54. Variable
speed dial wiring.
Wt
Rd
Bk
To Motor
(see Photo &
Wiring Diagram
on Page 45)
Gn
Rd
W
Wt
V
Bk
Bk
U
T
Wt
S
Wt
Rd
Bk
11
12
Vin
COM X5
X6
X2
X4
Y1 AM+ Iin
FWD REV C0M X1
X3 CME Y2 FM+ GND 12V
Tb1 Ta2
Tc1 Ta1 Tc2
Rd
R
To Electrical
Panel
(see Figure
57 on Page
44, Wiring
Diagram on
Page 42)
RM5G-2002 2 HP 220V 3-PH
Inverter
(see Figure 56 on Page 44)
-4-
G0668 Update (Mfd. Since 06/08)
Revised Electrical Components
New
Figure 2. Main electrical wiring with new
transformer.
G0668 Update (Mfd. Since 06/08)
Old
Figure 3. Main electrical wiring with old
transformer.
-5-
Revised Electrical Components (Cont.)
New
Figure 4. New control panel wiring.
Old
Figure 5. Old control panel wiring.
Figure 6. New annealing and welding buttons.
-6-
G0668 Update (Mfd. Since 06/08)
READ THIS FIRST
Model G0668
***IMPORTANT UPDATE***
For Machines Mfd. Since 12/14
and Owner's Manual Printed 02/08
For questions or help with this product contact Tech Support at (570) 546-9663 or [email protected]
The following change was recently made to this machine since the owner's manual was printed:
•
Redesigned guide post elevation handwheel, bracket, worm gear, and added a ball bearing.
Aside from this information, all other content in the owner's manual applies and MUST be read and understood for your own safety. IMPORTANT: Keep this update with the owner's manual for future reference.
For questions or help, contact our Tech Support at (570) 546-9663 or [email protected]
New/Revised Parts
515V2
526
518V2
520V2
REF
PART #
DESCRIPTION
515V2
518V2
520V2
526
P0668515V2
P0668518V2
P0668520V2
P0668526
WORM GEAR W/9MM SHAFT V2.12.14
HANDWHEEL W/9MM BORE V2.12.14
BRACKET W/9MM BORE V2.12.14
BALL BEARING 609ZZ
Note: If replacing older V1 parts with V2 parts,
you must replace the worm gear, bearing, bracket, and handwheel as a set.
COPYRIGHT © JANUARY, 2015 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#BL17101 PRINTED IN TAIWAN
READ THIS FIRST
Model G0668
***IMPORTANT UPDATE***
For Machines Mfg. Since February, 2013
and Owner's Manual Printed February, 2008
The following change was made to this machine since the owner's manual was printed:
•The blade shear was improved to a more heavy-duty version (see Figure 1).
This document provides an update to a portion of the owner's manual that no longer applies—aside from
this information, all other content in the owner's manual applies and MUST be read and understood for your
own safety. IMPORTANT: Keep this update with the owner's manual for future reference.
For questions or help, contact our Tech Support at (570) 546-9663 or [email protected]
Changed Parts
11V2
Blade
Shear
12V2
Figure 1. Heavy-duty blade shear.
REF PART #
DESCRIPTION
11V2 PB06M
12V2 P8144Z012V2
HEX BOLT M8-1.25 X 12
BLADE SHEAR V2.02.13
Copyright © FEBRUARY, 2013 By Grizzly Industrial, Inc.
Warning: No portion of this manual may be reproduced in any shape
or form without the written approval of Grizzly Industrial, inc.
#TS15611 printed in Taiwan
Model G0668
***IMPORTANT UPDATE***
Applies to Models Mfg. Since 10/11
and Owner's Manual February, 2008
We recently made the following changes to the Model G0668:
•Electrical & Control Panel Wiring Diagram (Page 42).
•
Inverter Wiring Diagram (Page 43).
•
Welding Station Wiring Diagram (Page 46).
•
Variable speed dial wiring image (Page 43, Figure 54).
•
Inverter/Controller box wiring image (Page 44, Figure 56).
•
Main electrical wiring image (Page 44, Figure 57).
•
Welding station wiring image (Page 46, Figure 59).
•
Cabinet parts breakdown and parts list (Page 47).
Aside from the information contained in this update, all other content in the owner's manual applies to this
machine. For your own safety, you MUST read and understand this update and the applicable owner's
manual. Keep this update for future reference!
If you have any further questions about this manual update or the changes made to the machine, contact
our Technical Support at (570) 546-9663 or email [email protected]
Copyright © JANUARY, 2012 By Grizzly Industrial, Inc.
Warning: No portion of this manual may be reproduced in any shape
or form without the written approval of Grizzly Industrial, inc.
#ST14254 printed in Taiwan
Rd
Rd
Rd
Control Panel
(see Figure 55
on Page 44)
Rd
1
Power
Lamp
Electrical Panel
(see Figure 57
on Page 44)
22
21
14
13
24V
Power
Switch
Revised Electrical & Control Panel
Wiring Diagram
R2
24V
220V
0V
24V
12V
0
Grnd
Emergency
Stop Button
T2
2
2
1
3
22
21
13
14
14
13
21
22
Start
Button
440V
415V
1
0V
Transformer
1-PH 0-3VA
380V
0V
220V
0
COLOR KEY
Black
White
Green
Red
Yel/Grn
0V
12
0
1
U
Bk
Wt
Gn
Rd
Yg
3L/2
2
A2
5L/3
2T/1
4T/2
6T/3
U
V
W
R
T
Fuse 3A
1L/1
T
13NO
NHD C120 24V
S
Contactor
R
A1
Fuse 3A
V
8
7
6
5
Relay
Arita MY4S 24V 3-5A
11
12
11
9
10
R1
14NO
3
A2
14
S1
T2
13
0
R2
0
3
Ground
U
R
V
Bk
W
R
S
T
S
T
R S T
Grnd
U
Bk
V
W
W
Bk
Bk
Bk
R1
S1
U V
S1
R1
Connect the
manufactured
leg of a power
converter
to the
"S" terminal
here.
-2-
Bk
To Welding Station
(see Photo & Wiring
Diagram on Page 46)
R3 S3
R3
Bk
To Inverter
(see Wiring
Diagram on
Page 43)
S3
Bk
Bk
Bk
Bk
To Motor Fan
(see Photo & Wiring
Diagram on Page 45)
Bk
220V
3-Phase
Power
Hot
Ground
G
Hot
X
Z
W
Hot
NEMA 15-15 Plug
(As Recommended)
G0668 Update (Mfg. Since 10/11)
Revised Inverter Wiring Diagram
COLOR KEY
Black
TSAF
Bk
White
Wt
Green
Gn
Red
Blue
Yellow
Rd
Bu
Yl
WOLS
Figure 54. Variable
speed dial wiring.
Wt
Rd
Bk
To Motor
(see Photo &
Wiring Diagram
on Page 45)
Gn
Rd
W
Wt
V
Bk
Bk
U
T
Wt
S
Wt
Rd
Bk
11
12
Vin
COM X5
X6
X2
X4
Y1 AM+ Iin
FWD REV C0M X1
X3 CME Y2 FM+ GND 12V
Tb1 Ta2
Tc1 Ta1 Tc2
Rd
R
To Electrical
Panel
(see Figure
57 on Page
44, Wiring
Diagram on
Page 42)
RM5G-2002 2 HP 220V 3-PH
Inverter
(see Figure 56 on Page 44)
G0668 Update (Mfg. Since 10/11)
-3-
Electrical Components
Figure 56. Inverter/Controller box wiring (see
wiring diagram on Page 43).
Figure 57. Main electrical wiring (see wiring diagram on Page 42).
-4-
G0668 Update (Mfg. Since 10/11)
Right
Welding
Clamp
Welding
Button
1
1
4
4
2
Left
Welding
Clamp
2
Sensor
NC NO
COM
Annealing Button
Welding Station Wiring Diagram
Bk
Yl
Yl
Yl
1
Bk
1
2
3
4
5
6
Figure 59. Welding station wiring.
Yl
Bk
Bk
S1
R1
To Electrical Panel
(see Page 42)
220V Transformer
Start Capacitor
3MFD 250VAC
NO
Gy
Grinder
Motor
FFO
4
Grinder
Switch
6
COLOR KEY
Gn
2
1
3
5
Black
Bk
White
Wt
Green
Gn
Blue
G0668 Update (Mfg. Since 10/11)
Red
Gray
Yellow
Rd
Gy
Yl
Bu
-5-
SECTION 8: PARTS
30
29
31
35
Cabinet
32-1V2
14
32V2
11
33
34
16
8
18
12
18-1
10
15
9
17
21
13
22
19
24
20
4
4-1
25
7
4-2
4-4
3
2
5
4-3
23
6
19
27
20
26
28
KEYPAD
MPM
RPM
T.S
PROG
1
RUN
FUN
STOP
DATA
RESET
REF PART #
DESCRIPTION
REF
PART #
DESCRIPTION
1
2
3
4
4-1
4-2
4-3
4-4
5
6
7
8
9
10
11
12
13
14
15
16
17
WHEEL DOOR LOWER
HINGE PIN LOWER
PHLP HD SCR M5-.8 X 8
CONTROL PANEL
POWER SWITCH W/KEY
POWER LAMP
EMERGENCY STOP BUTTON
MOTOR ON BUTTON
BLADE CLEANING BRUSH
PHLP HD SCR M6-1 X 25
WHEEL DOOR UPPER
HINGE PIN UPPER
PHLP HD SCR M5-.8 X 8
DIGITIAL DISPLAY BRACKET
CAP SCREW M8-1.25 X 16
BLADE SHEAR
VARIABLE SPEED DIAL
AIR PUMP
BANDSAW CABINET
AIR HOSE 4X6MM
AIR NOZZLE
18
18-1
19
20
21
22
23
24
25
26
27
28
29
30
31
32V2
32-1V2
33
34
35
P0668018
P0668018-1
P0668019
PS47M
PSB28M
PW03M
P0668023
PW03M
PB04M
P0668026
P0668027
P0668028
P0668029
P0668030
P0668031
P0668032V2
P0668032-1V2
P0668033
P0668034
P0668035
WORK LAMP 220V
LIGHT BULB 220V
DOOR KNOB
PHLP HD SCR M6-1 X 25
CAP SCREW M6-1 X 15
FLAT WASHER 6MM
MOTOR ACCESS PANEL
FLAT WASHER 6MM
HEX BOLT M6-1 X 10
CHIP PAN
DIGITAL DISPLAY
INVERTER RM5G 2HP 220V 3PH
CONTROL PANEL
TRANSFORMER 1PH 0-3VA
CONTACTOR NHD C120D 220V
RELAY STON MY4S 24V 3-5A
RELAY HOLDER STON PYF14AE
FUSE HOLDER
FUSE 3A
TERMINAL BLOCK 11-POST
-6-
P0668001
P0668002
PS05M
P0668004
P0668004-1
P0668004-2
P0668004-3
P0668004-4
P0668005
PS47M
P0668007
P0668008
PS05M
P0668010
PSB11M
P0668012
P0668013
P0668014
P0668015
P0668016
P0668017
G0668 Update (Mfg. Since 10/11)
MODEL G0668
20" VERTICAL METAL-CUTTING
BANDSAW
OWNER'S MANUAL
COPYRIGHT © FEBRUARY, 2008 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#TS10278 PRINTED IN TAIWAN
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Table of Contents
INTRODUCTION ............................................... 2
Foreword ........................................................ 2
Contact Info ................................................... 2
Machine Data Sheet ...................................... 3
Identification ................................................... 5
Control Panel Identification ............................ 6
SECTION 1: SAFETY ....................................... 7
Safety Instructions for Machinery .................. 7
Safety Instructions for
Metal Cutting Bandsaws ................................ 9
SECTION 2: CIRCUIT REQUIREMENTS ...... 10
220V 3-Phase Operation ............................. 10
SECTION 3: SETUP ....................................... 11
Setup Safety ................................................ 11
Items Needed for Setup ............................... 11
Unpacking .................................................... 11
Clean Up ...................................................... 12
Site Considerations ...................................... 12
Mounting to Shop Floor ............................... 13
Moving & Placing ......................................... 13
Test Run ...................................................... 14
Recommended Adjustments ........................ 15
SECTION 4: OPERATIONS ........................... 16
Operation Safety .......................................... 16
Cutting Overview ......................................... 16
Cutting Tips .................................................. 17
Workpiece Inspection .................................. 17
Basic Controls .............................................. 18
Blade Selection ............................................ 19
Blade Breakage ........................................... 22
Blade Care & Break-In ................................. 22
Chip Inspection Chart .................................. 23
Blade Changes ............................................ 24
Blade Tensioning ......................................... 25
Guide Post ................................................... 25
Adjusting Blade Guides & Support .............. 26
Adjusting Table Tilt ...................................... 27
Blade Welding .............................................. 28
SECTION 5: ACCESSORIES ......................... 31
SECTION 6: MAINTENANCE......................... 32
Schedule ...................................................... 32
Cleaning ....................................................... 32
Redressing Rubber Tires ............................. 33
Lubrication ................................................... 33
SECTION 7: SERVICE ................................... 34
Troubleshooting ........................................... 34
Lower Wheel Pulley Alignment .................... 36
Tensioning V-Belts ....................................... 36
Replacing V-Belts ........................................ 37
Adjusting Wheel Brush ................................ 37
Wheel Alignment .......................................... 38
Aligning Table to Blade ................................ 40
Blade Guides ............................................... 41
Electrical & Control Wiring Diagram ............ 42
Inverter Wiring Diagram ............................... 43
Electrical Components ................................. 44
Motor Wiring Diagram .................................. 45
Welding Station Wiring Diagram .................. 46
SECTION 8: PARTS ....................................... 47
Cabinet......................................................... 47
Table & Lower Guide ................................... 48
Motor & Lower Wheel .................................. 49
Welding Station ............................................ 50
Guide Post ................................................... 52
Upper Wheel ................................................ 53
Labels .......................................................... 54
WARRANTY AND RETURNS ........................ 57
INTRODUCTION
Foreword
Contact Info
We are proud to offer the Model G0668 20"
Vertical Metal-Cutting Bandsaw. This machine
is part of a growing Grizzly family of fine metalworking machinery. When used according to
the guidelines set forth in this manual, you can
expect years of trouble-free, enjoyable operation
and proof of Grizzly’s commitment to customer
satisfaction.
If you have any comments regarding this manual,
please write to us at the address below:
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G0668 when the manual was prepared. However,
owing to Grizzly’s policy of continuous improvement, changes may be made at any time with no
obligation on the part of Grizzly.
We stand behind our machines. If you have any
service questions or parts requests, please call or
write us at the location listed below.
For your convenience, we always keep current
Grizzly manuals available on our website at
www.grizzly.com. Any updates to your machine
will be reflected in these manuals as soon as they
are complete. Visit our site often to check for the
latest updates to this manual!
-2-
C
Grizzly Industrial, Inc.
/O Technical Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Email: [email protected]
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: [email protected]
Web Site: http://www.grizzly.com
G0668 20" Vertical Metal-Cutting Bandsaw
Machine Data Sheet
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data sheet
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G0668 20" Vertical Metal-Cutting Bandsaw
Identification
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Front View
Rear View
Figure 1. Model G0668 identification.
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F.
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H.
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Blade Shear
Upper Wheel Door
Guide Post Elevation Handwheel
Guide Post Lock Knob
Work Light (220V)
Air Hose & Jet
Blade Tension Handwheel
Table Tilt Scale
Motor Access Panel
G0668 20" Vertical Metal-Cutting Bandsaw
J.
K.
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M.
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Q.
Machine Mounting Flange
Lower Wheel Door
Lower Blade Guide Assembly
Table
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Guide Post and Blade Guard
Bandsaw Power Control Panel
Blade Welding Station
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Control Panel Identification
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Variable Speed Dial
Welding ON Button
Annealing ON Button
Clamping Pressure Dial
Welding Clamp
Welding Clamp Lock Levers
Grinding Wheel ON/OFF Switch
Grinding Wheel
Power Switch & Key
Power Lamp
Bandsaw Start Button
Emergency Stop Button
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Figure 2. Control panel identification.
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G0668 20" Vertical Metal-Cutting Bandsaw
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G0668 20" Vertical Metal-Cutting Bandsaw
Safety Instructions for Metal Cutting
Bandsaws
1.
BLADE CONDITION. Do not operate with
dull, cracked or badly worn blade that can
break during operation or decrease the performance of the bandsaw. Inspect blades
for cracks and missing teeth before each
use.
2.
BLADE REPLACEMENT. Wear gloves to
protect hands and safety glasses to protect eyes when replacing the blade. When
replacing blades, make sure teeth face
forward and down toward the table in the
direction of blade travel.
3.
WORKPIECE HANDLING. Your hands can
be drawn into the blade during operation if
the workpiece moves unexpectedly. Always
keep your hands a safe distance away from
the moving blade.
4.
FIRE HAZARD. Use EXTREME CAUTION
if cutting magnesium. Using the wrong cutting fluid will lead to chip fire and possible
explosion.
5.
WELDING AND GRINDING SAFETY. The
welding station represents a serious hazard.
DO NOT touch any metal parts of the blade,
welder, or machine when activating the
welder. Keep your hands a safe distance
away from the grinding wheel when in use.
6.
HOT SURFACES. Be aware that touching hot workpieces or chips after welding,
grinding, or cutting can cause burns.
7.
CUTTING FLUID SAFETY. Cutting fluids
are poisonous. Always follow manufacturer’s cutting-fluid safety instructions. Pay
particular attention to contact, contamination, inhalation, storage and disposal warnings. Spilled cutting fluid invites slipping
hazards.
8.
ENTANGLEMENT HAZARDS. Always
keep the blade guard correctly positioned
and wheel doors closed and secured when
bandsaw is in operation. Loose clothing,
jewelry, long hair and work gloves can be
drawn into working parts.
9.
MAINTENANCE/SERVICE. All inspections,
adjustments, and maintenance are to be
done with the power OFF and the plug
pulled from the outlet. Wait for all moving
parts to come to a complete stop.
10. ROUND/UNSTABLE
WORKPIECES.
Workpieces that cannot be supported or
stabilized without a vise or jig should not
be cut on a vertical metal-cutting bandsaw,
because they can unexpectedly move while
cutting and draw the operator's hands into
the blade causing serious personal injury.
Examples are chains, cables, round or
oblong-shaped workpieces, workpieces
with internal or built-in moving or rotations
parts, etc.
11. EXPERIENCING DIFFICULTY. If at any
time you are experiencing difficulties performing the intended operation, stop using
the machine! Contact our Technical Support
Department at (570) 546-9663.
No list of safety guidelines can be complete. Every shop environment is different. Always consider safety first, as it applies to your individual working conditions. Use this and other machinery with caution and respect. Failure to do so could result in serious personal injury, damage to
equipment, or poor work results.
G0668 20" Vertical Metal-Cutting Bandsaw
-9-
SECTION 2: CIRCUIT REQUIREMENTS
220V 3-Phase
Operation
Power Connection Device
The type of plug required to connect your machine
to power depends on the type of service you currently have or plan to install. We recommend
using the plug shown in Figure 3.
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Serious personal injury could occur if you
connect the machine to power before completing the setup process. DO NOT connect
the machine to the power until instructed
later in this manual.
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Electrocution or fire could
result if machine is not
grounded and installed in
compliance with electrical
codes. Compliance MUST
be verified by a qualified
electrician!
Full Load Amperage Draw
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Figure 3. NEMA 15-15 plug and receptacle.
Extension Cords
Using extension cords may reduce the life of the
motor. Instead, place the machine near a power
source. If you must use an extension cord:
•
Use at least a 14 gauge cord that does not
exceed 50 feet in length!
•
The extension cord must also have a ground
wire and plug pin.
•
A qualified electrician MUST size cords over
50 feet long to prevent motor damage.
Motor Draw at 220V ................................ 7 Amps
Power Supply Circuit Requirements
You MUST connect your machine to a grounded
circuit that is rated for the amperage given below.
Never replace a circuit breaker on an existing circuit with one of higher amperage without consulting a qualified electrician to ensure compliance
with wiring codes. If you are unsure about the
wiring codes in your area or you plan to connect your machine to a shared circuit, consult
a qualified electrician.
Minimum Circuit 220V 3-Phase ............. 15 Amps
-10-
Phase Converter Precaution
The power from the manufactured leg of a phase
converter may damage electrical components if
connected to the wrong incoming power terminal
on your machine. Only connect the manufactured
leg to the S terminal (see the Electrical & Control
Wiring Diagram on Page 42 for identification).
G0668 20" Vertical Metal-Cutting Bandsaw
SECTION 3: SETUP
Setup Safety
This machine presents
serious injury hazards
to untrained users. Read
through this entire manual to become familiar with
the controls and operations before starting the
machine!
Wear safety glasses or
a face shield during the
entire setup process!
This bandsaw is a heavy
machine. Serious personal injury may occur if
safe moving methods are
not used. To be safe, get
assistance and use power
equipment rated for over
1500 lbs. to move the shipping crate and remove the
machine from the crate.
G0668 20" Vertical Metal-Cutting Bandsaw
Items Needed for
Setup
The following items are needed to complete the
setup process, but are not included with your
machine:
Description
Qty
•
Assistants ................................................... 2
•
Safety Glasses (for each person) .............. 1
•
Lifting Straps (rated for 1500 lbs.)
.....................................................2 Or More
•
Forklift (rated for 1500 lbs.) ........................ 1
•
Floor Mounting Hardware ........... As Needed
Unpacking
Your machine was carefully packaged for safe
transportation. Remove the packaging materials
from around your machine and inspect it. If you
discover the machine is damaged, please immediately call Customer Service at (570) 546-9663
for advice.
Save the containers and all packing materials for
possible inspection by the carrier or its agent.
Otherwise, filing a freight claim can be difficult.
-11-
degreaser
Clean Up
The unpainted surfaces are coated with a waxy
oil to prevent corrosion during shipment. Remove
this protective coating with a solvent cleaner
or degreaser shown in Figure 4. For thorough
cleaning, some parts must be removed. For optimum performance from your machine, clean
all moving parts or sliding contact surfaces.
Avoid chlorine-based solvents, such as acetone
or brake parts cleaner that may damage painted
surfaces. Always follow the manufacturer’s instructions when using any type of cleaning product.
Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. DO
NOT use these products
to clean the machinery.
Many cleaning solvents
are toxic if inhaled.
Minimize your risk by only
using these products in a
well ventilated area.
G2544—Solvent Cleaner & Degreaser
A great product for removing the waxy shipping
grease from your machine during clean up.
Site Considerations
Floor Load
Refer to the Machine Data Sheet on Page 3 for
the weight and footprint specifications of your
machine. Some floors may require additional
reinforcement to support both the machine and
operator.
Placement Location
Consider existing and anticipated needs, size of
material to be processed through each machine,
and space for auxiliary stands, work tables or
other machinery when establishing a location for
your new machine. See Figure 5 for the minimum
working clearances.
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Figure 5. Minimum working clearances (top
view).
Figure 4. Cleaner/degreaser available from
Grizzly.
-12-
G0668 20" Vertical Metal-Cutting Bandsaw
Moving & Placing
Mounting to Shop
Floor
The bandsaw center of gravity is above the middle
of the machine. Although not required, we strongly recommend that you mount your new machine
to the floor to prevent tipping. Because this is an
optional step and floor materials may vary, floor
mounting hardware is not included.
This bandsaw is a heavy
machine. Serious personal injury may occur if
safe moving methods are
not used. To be safe, get
assistance and use power
equipment rated for over
1500 lbs. to move the shipping crate and remove the
machine from the crate.
Bolting to Concrete Floors
Anchor studs and lag bolts (Figure 6) are two
popular methods for anchoring an object to a concrete floor. We suggest you research the many
options and methods for mounting your machine
and choose the best that fits your specific application.
NOTICE
To lift and move the bandsaw:
1.
Position lifting straps under the head of the
bandsaw and on the forklift forks, as shown
in Figure 7.
Anchor studs are stronger and more permanent alternatives to lag bolts; however, they
will stick out of the floor, which may cause
a tripping hazard if you decide to move your
machine.
Anchor Stud
Figure 7. Lifting straps positioned on bandsaw.
Lag Anchor & Bolt
Figure 6. Typical fasteners for mounting to
concrete floors.
NOTICE
Only use lifting straps and power lifting
equipment rated for at least 1500 lbs. and
in good working condition. If the bandsaw
falls or tips over while moving it, serious
personal injury and property damage could
result.
We strongly recommend securing your
machine to the floor if it is hardwired to the
power source. Consult with your electrician
to ensure compliance with local codes.
G0668 20" Vertical Metal-Cutting Bandsaw
-13-
2.
Unbolt the bandsaw from the pallet.
3.
With two assistants to steady the bandsaw,
slowly lift it just enough to clear the pallet and
floor obstacles, then move it to the prepared
location.
4.
5.
Place the key in the Power Switch and turn it
to the ON position—the Power Lamp should
light.
6.
Push the Emergency Stop button in, then
twist it clockwise so it pops out. When the
Emergency Stop button pops out, the switch
is reset and ready for operation (see Figure
8).
Use shims between the machine mounting
flanges and the floor to level the bandsaw.
Note: Tighten the mounting fasteners evenly
to avoid warping or cracking the base.
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Test Run
Once the bandsaw is in place, test run your
machine to make sure it runs properly and is ready
for regular operation. The test run consists of verifying the following: 1) The bandsaw motor powers
up and runs correctly, and 2) the Emergency Stop
button safety feature works correctly.
If, during the test run, you cannot easily locate
the source of an unusual noise or vibration,
stop using the machine immediately, then review
Troubleshooting on Page 34.
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Figure 8. Emergency stop button.
7.
Push the Start button to turn the machine
ON.
8.
Verify that the machine is operating correctly.
—When operating correctly, the machine
runs smoothly with little or no vibration or
rubbing noises.
If you cannot find a remedy, contact our Tech
Support at (570) 546-9663 for assistance.
—Investigate and correct strange or unusual
noises or vibrations before operating the
machine further. Always disconnect the
machine from power when investigating or
correcting potential problems.
To test run the bandsaw:
1.
2.
3.
4.
-14-
Read and follow the safety instructions at the
beginning of the manual, and make sure the
machine is setup properly.
Clear all tools and objects used during setup
away from the machine, and make sure both
wheel doors are closed and secured.
Make sure the blade is properly tensioned
and the blade guides are positioned correctly
(refer to Blade Tensioning on Page 25, and
Adjusting Blade Guides on Page 26 for
detailed instructions).
Connect the machine to the power source.
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9.
Verify that the motor is running in the correct
direction.
—When the motor is running in the correct
direction, the blade will be moving down
into the table.
—If the motor is NOT running in the correct
direction, stop the machine, disconnect the
machine from power, and switch any two
incoming power leads inside the motor wiring junction box (refer to the Motor Wiring
Diagram on Page 45 for detailed illustrations).
G0668 20" Vertical Metal-Cutting Bandsaw
Recommended
Adjustments
10. Press the Emergency Stop button to stop the
machine.
11. WITHOUT resetting the switch, press the
Start button. The machine should not start.
—If the machine does not start, the Emergency
Stop button safety feature is working correctly.
—If the machine does start (with the stop
button pushed in), immediately disconnect
power to the machine. The Emergency
Stop button safety feature is not working
correctly. This safety feature must work
properly before proceeding with regular
operations. Call Tech Support for help.
12. Reset the Emergency Stop button by twisting
it clockwise until it pops out.
13. Turn the Power Switch key to the OFF position—the Power Lamp should go out.
The Power Switch is intended to prevent
unauthorized use of this machine. The Power
Switch does not disconnect the bandsaw
from power. To avoid the risk of serious personal injury, you MUST physically disconnect
the bandsaw from the power source before
performing adjustments, maintenance, or
service to this machine.
14. Press the Start button.
For your convenience, the adjustments listed
below have been performed at the factory.
However, because of the many variables involved
with shipping, we recommend that you at least
verify the following adjustments to ensure the best
possible results from your new machine.
Step-by-step instructions for these adjustments
can be found in the SERVICE section starting on
Page 34.
Factory adjustments that should be verified:
1.
Lower wheel pulley alignment (refer to Page
36).
2.
Tensioning V-belts (refer to Page 36).
NOTICE
After the first 16 hours of operation, new
V-belts will stretch and seat farther into the
pulleys. To avoid slippage, re-tension new
V-belts after this period.
3.
Wheel alignment (refer to Page 38).
4.
Table alignment relative to the blade (refer to
Page 40).
—If the machine does not start, the Power
Switch safety feature is working correctly.
—If the machine does start with the Power
Switch key turned to the OFF position,
immediately disconnect power to the
machine. The Power Switch safety feature
is not working correctly. This safety feature
must work properly before proceeding with
regular operations. Call Tech Support for
help.
If all of the Test Run procedures were successful,
your bandsaw is ready for operation.
G0668 20" Vertical Metal-Cutting Bandsaw
-15-
SECTION 4: OPERATIONS
Operation Safety
To reduce the risk of
serious injury when using
this machine, read and
understand this entire
manual before beginning
any operations.
Damage to your eyes, lungs, and ears could
result from using this machine without
proper protective gear. Always wear safety
glasses, a respirator, and hearing protection
when operating this machine.
Cutting Overview
The vertical metal cutting bandsaw has a flexible
continuous blade that cuts in one direction. The
type of bandsaw blade and the speed of the blade
to be used depends on the workpiece material
and the type of cut required.
This type of bandsaw can be used for straight cuts,
angular cuts, curved or contour cuts, and internal
cuts. Straight cuts are made using workpiece fixtures and with a light, even pressure against the
blade. Angular cuts are made with the table and
workpiece tilted at an angle other than "0".
When an internal cut is to be made, a hole must
be drilled in the workpiece. The blade is then cut,
fed through the hole in the workpiece, welded
together again using the welding station, and reinstalled on the bandsaw to make the cut. The
welding station can also be used to fabricate new
blades and repair broken blades.
The blade is supported by upper and lower tungsten steel blade guides that keep the blade from
wandering during the cut.
Loose hair, clothing, or
jewelry could get caught
in machinery and cause
serious personal injury.
Keep these items away
from moving parts at all
times to reduce this risk.
NOTICE
If you have never used this type of machine
or equipment before, WE STRONGLY RECOMMEND that you read books, trade magazines, or get formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will
not be held liable for accidents caused by
lack of training.
-16-
The efficiency of the cutting operation can be easily checked by examining the shape and color of
the metal chips.
Workpieces that cannot be supported or
stabilized without a vise or jig should not
be cut on a vertical metal-cutting bandsaw,
because they can unexpectedly move while
cutting and draw the operator's hands into
the blade causing serious personal injury. Examples are chains, cables, round or
oblong-shaped workpieces, workpieces
with internal or built-in moving or rotations
parts, etc.
G0668 20" Vertical Metal-Cutting Bandsaw
Cutting Tips
•
Keep the upper blade guides adjusted to
approximately 1⁄4" above the workpiece to
provide proper support for the blade during
cutting operations.
•
Replace, sharpen, and clean blades as necessary. Make adjustments periodically to
keep the saw running in top condition.
•
Use light and even pressure while cutting.
Light contact with the blade makes it easier
to follow lines and prevents extra friction.
•
Avoid twisting the blade when cutting around
tight corners. Use the proper width of blade
for the radius of the corner and make relief
cuts.
•
Misusing the bandsaw or using incorrect
techniques is unsafe and results in poor cuts.
Remember—the blade does the cutting with
the operator's guidance.
•
Never start a cut with the blade in contact
with the workpiece, and do not start a cut on
a sharp edge of the workpiece.
•
Pay attention to the characteristics of the
chips when cutting—they are good indicators of proper blade speed and feed rate.
Figure 16 on Page 23 shows the basic chip
characteristics and what they mean.
ELECTROCUTION HAZARD
This bandsaw is not designed to be used
with water soluble cutting fluid or coolant.
If needed, use a small amount of oil-based
lubricant.
G0668 20" Vertical Metal-Cutting Bandsaw
Workpiece
Inspection
Some metal workpieces are not safe to cut with a
vertical metal cutting bandsaw; instead, a different tool or machine should be used.
Before cutting, inspect the material for any of
the following conditions and take the necessary precautions:
•
Small or Thin Workpieces: Small or thin
workpieces are dangerous to cut if held
by hand—avoid cutting these workpieces
if possible. If you must cut a small or thin
workpiece, attach it to or clamp it between
larger scrap pieces that will both support the
workpiece through the cut and keep your fingers away from the blade. Some thin sheet
metals will not withstand the forces from this
bandsaw during cutting; instead, use a shear,
nibblers, or sheet metal nippers to cut these
pieces.
•
Round/Unstable Workpieces: Workpieces
that cannot be properly supported or stabilized without a vise or jig should not be cut on
a vertical metal-cutting bandsaw. Examples
are chains, cables, round or oblong-shaped
workpieces, workpieces with internal or builtin moving or rotating parts, etc.
•
Material Hardness: Always factor in the hardness of the metal before cutting it. Hardened
metals will take longer to cut, may require
lubrication, and may require a different type
of blade in order to efficiently cut them.
•
Tanks, Cylinders, Containers, Valves, Etc:
Cutting into containers that are pressurized or contain gasses or liquids can cause
explosions, fires, caustic burns, or machine
damage. Avoid cutting any of these types of
containers unless you have verified that the
container is empty and it can be properly supported during a cut.
•
Magnesium: Pure magnesium burns easily. Cutting magnesium with a dull blade can
create enough friction to ignite the small
magnesium chips. Avoid cutting magnesium
if possible.
-17-
Basic Controls
Use the descriptions and Figures 9–10 below to
become familiar with the basic controls of your
bandsaw.
Digital
Speed
Display
Blade
Welding
Station
Variable
Speed
Dial
Power
Lamp
Power
Switch
Start Button
Emergency
Stop
Button
Figure 9. Electrical controls.
Blade Post
Lock Knob
Digital Speed Display: Shows blade speed in
feet per minute (FPM).
Variable Speed Dial: Adjusts the blade speed
between 105–2102 FPM.
Blade Welding Station: Welds two blade ends to
make a continuous loop when repairing a broken
blade, fabricating a new blade, or making internal
cuts.
Power Switch: The main power switch for the
entire machine.
Power Lamp: Lights when the Power Switch is
turned ON and there is power to the machine.
Start Button: Turns the bandsaw motor ON.
Emergency Stop Button: Turns the bandsaw
motor OFF.
Blade Post Lock Knob: Secures the blade post
and upper blade guide assembly in position.
Blade Guide Elevation Handwheel: Raises/lowers the blade post and upper blade guide assembly when rotated.
Blade Tensioning Handwheel: Increases/
decreases blade tension when rotated.
Blade Guide
Elevation
Handwheel
Blade
Tensioning
Handwheel
Figure 10. Blade controls.
-18-
The bandsaw blade is
sharp and can easily cut
your hand or fingers.
Always disconnect the
power and wear heavy
leather gloves when
making adjustments to
or near the blade.
G0668 20" Vertical Metal-Cutting Bandsaw
blade widths and radius
blade selection
Blade Selection
Selecting the right blade for the cut requires a
knowledge of various blade characteristics.
Blade Terminology
C
G0668 Blade Width Range ....................... 1⁄8"–3⁄4"
H
F
G
I
Figure 11. Bandsaw blade terminology.
A. Kerf: The amount of material removed by the
blade during cutting.
B. Tooth Set: The amount each tooth is bent
left or right from the blade.
C. Gauge: The thickness of the blade.
D. Blade Width: The widest point of the blade
measured from the tip of the tooth to the back
edge of the blade.
E.
F.
G0668 Blade Length Range..........1541⁄2"–1593⁄4"
Measured from the back of the blade to the tip of
the blade tooth (the widest point), blade width is
often the first consideration given to blade selection. Blade width dictates the largest and smallest
curve that can be cut, as well as how accurately
it can cut a straight line—generally the wider the
blade, the straighter it will cut. Always pick the
blade width that best suits your operation.
B
E
Measured by the blade circumference, blade
lengths are usually unique to the brand of your
bandsaw and the distance between the wheels.
Blade Width
A
D
Blade Length
Tooth Rake: The angle of the tooth face
from a line perpendicular to the length of the
blade.
Curve Cutting: Use the chart in Figure 12
to choose the correct blade for curve cutting.
Determine the smallest radius curve that will be
cut on your workpiece and use the corresponding
blade width.
The list below shows the minimum radius
that can be cut by common blade widths.
Width
Radius
1
⁄8" .................................... 1⁄8"
3
⁄16"................................... 3⁄8"
1
⁄4'' .................................... 5⁄8''
3
⁄8'' .................................... 11⁄4''
1
⁄2'' .................................... 21⁄2''
5
⁄8'' .................................... 33⁄4''
3
⁄4'' .................................... 51⁄2''
Figure 12. Blade width radii.
Gullet Depth: The distance from the tooth tip
to the bottom of the curved area (gullet).
G. Tooth Pitch: The distance between tooth
tips.
H. Blade Back: The distance between the bottom of the gullet and the back edge of the
blade.
I.
TPI: The number of teeth per inch measured
from gullet to gullet.
G0668 20" Vertical Metal-Cutting Bandsaw
-19-
Tooth Set
Tooth Type
Three common tooth sets are standard, wavy,
and raker (see Figure 13), each removing material in a different manner to make the kerf in the
workpiece.
The most common tooth types are described
below and illustrated in Figure 14.
Standard or Raker: Equally spaced teeth set
a "0" rake angle. Recommended for all purpose
use.
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Alternate
Wavy
Raker
Figure 13. Bandsaw tooth sets.
Alternate: An all-purpose arrangement of bending the teeth evenly left and right of the blade.
Generally used for milder metals.
Wavy: Generally three or more teeth in a group
that are bent one way, followed by a non-set
tooth, then another group bent the other way.
Recommended for straight cuts in thin metals or
thin-wall tubing.
Raker: Three teeth in a recurring group—one
bent left, next one bent right, and then a non-set
tooth. The raker is ideal for most contour cuts.
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Figure 14. Bandsaw blade tooth types.
Variable Pitch (VP): Varying gullet depth and
tooth spacing, a "0" rake angle, excellent chip
removing capacity, and smooth cutting.
Variable Pitch with Positive Rake: Varying gullet depth and tooth spacing, a positive rake angle,
better chip formation, and aggressive cutting.
Hook or Claw: Wide gullets (round or flat), equally spaced teeth, positive rake angle, and fast cut
with good surface finish.
Skip or Skip Tooth: Wide, flat gullets, a "0" rake
angle, equally spaced teeth, and recommended
for non-ferrous materials.
-20-
G0668 20" Vertical Metal-Cutting Bandsaw
Blade Pitch (TPI)
The chart below is a basic starting point for
choosing teeth per inch (TPI) for variable tooth
pitch blades and standard raker set bi-metal
blades/HSS blades. However, for exact specifications of bandsaw blades that are correct for your
operation, contact the blade manufacturer.
To select the correct blade pitch:
1.
Measure the material thickness. This measurement is the length of cut taken from
where the tooth enters the workpiece, sweeps
through, and exits the workpiece.
2.
Refer to the "Material Width/Diameter" row of
the blade selection chart in Figure 15, and
read across to find the workpiece thickness
you need to cut.
Material Width/Diameter
Material Shapes
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Refer to the "Material Shapes" row and find
the shape of the material to be cut.
4.
In the applicable row, read across to the right
and find the box where the row and column
intersect. Listed in the box is the minimum
TPI recommended for the variable tooth pitch
blades.
5.
The "Cutting Speed Rate Recommendation"
section of the chart offers guidelines for various metals, given in feet per minute (FPM).
Choose the speed closest to the number
shown in the chart.
Teeth Per Inch (TPI) for Variable Pitch Blades
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Figure 15. General guidelines for blade selection and speed chart.
G0668 20" Vertical Metal-Cutting Bandsaw
-21-
Blade Breakage
Many conditions may cause a bandsaw blade to
break. Blade breakage is unavoidable, in some
cases, since it is the natural result of the peculiar
stresses that bandsaw blades must endure. Blade
breakage is also due to avoidable circumstances.
Avoidable blade breakage is most often the result
of poor care or judgement on the part of the
operator when mounting or adjusting the blade or
support guides.
The most common causes of blade breakage
are:
•
Faulty alignment or adjustment of the blade
guides.
•
Forcing or twisting a wide blade around a
short radius.
•
Feeding the workpiece too fast.
•
Dull or damaged teeth.
•
Over-tensioned blade.
•
Top blade guide assembly set too high above
the workpiece. Adjust the top blade guide
assembly so that there is approximately 1⁄4"
between the bottom of the assembly and the
workpiece.
Blade Care &
Break-In
Blade Care
A bandsaw blade is a delicate piece of steel that
is subjected to tremendous strain. A blade will last
longer if you give it fair treatment and always use
the appropriate feed rate for your operation.
Be sure to select blades with the proper width,
set, type, and pitch for each application. Using the
wrong blade often produces unnecessary heat
and shortens the life of the blade.
A clean blade performs much better than a dirty
blade. Dirty or gummed up blades pass through
the cutting material with much more resistance
than clean blades. This extra resistance also
causes unnecessary heat.
Blade Break-In
The sharp teeth tips and edges of a new blade are
extremely sharp, and cutting at too fast of a feed
rate may fracture the beveled edges of the teeth
and cause premature blade wear.
To properly break-in a new blade:
1.
Choose the correct speed for the blade and
material of the operation.
•
Using a blade with a lumpy or improperly finished braze or weld.
2.
Reduce the feed pressure by half for the first
50–100 in2 of material cut.
•
Continuously running the bandsaw when not
in use.
3.
•
Leaving the blade tensioned when not in
use.
To avoid twisting the blade when cutting,
reduce the feed pressure when the total width
of the blade is in the cut.
4.
Use the Chip Inspection Chart on Page 23
to check the blade efficiency.
•
-22-
Using the wrong pitch (TPI) for the workpiece
thickness. The general rule of thumb is to
have at least three teeth in contact with the
workpiece at all times during cutting.
G0668 20" Vertical Metal-Cutting Bandsaw
chip inspection chart
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Chip Inspection Chart
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The best method of evaluating
the performance of your cutting operation is to inspect the chips that are
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formed. Refer to the chart below for chip inspection guidelines.
Chip
Appearance
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Chip
Chip
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Description
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Blade
Speed
Feed
Pressure
Good
Good
Decrease
Decrease
Lubricate with
Light Oil
Decrease
Decrease
Lubricate with
Light Oil
Good
Decrease
Slightly
Check Blade
Pitch
Increase
Decrease
Check Blade
Pitch
Silver
Good
Increase
Silver
Decrease
Increase
Good
Decrease
Color
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Hard,
Thick &
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Brown or Blue
Short
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Additional
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Check Blade
Pitch
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Figure 16. Chip inspection chart.
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G0668 20" Vertical Metal-Cutting Bandsaw
-23-
blade changes
Blade Changes
Always disconnect power
to the machine when
changing blades. Failure
to do this may result in
serious personal injury.
All saw blades are dangerous and may cause
personal
injury.
To
reduce the risk of being
injured, wear heavy
leather gloves when handling saw blades.
6.
To replace the blade:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Open the upper and lower wheel doors.
3.
Release the blade tension by rotating the
tensioning handwheel.
4.
Put on heavy leather gloves, then slide the
blade off the upper and lower wheels, around
the blade post, and through the table slit.
5.
Rotate the top wheel by hand several times
to make sure the blade tracks evenly without
wandering across the wheel surface.
Note: If the blade wanders across the wheel,
the wheel alignment may need to be adjusted. Refer to Wheel Alignment on Page 38
for detailed instructions.
7.
Re-tension the blade (refer to Blade
Tensioning on Page 25).
8.
Check the upper and lower blade guides for
proper clearance (refer to Adjusting Blade
Guides on Page 26).
Install a new blade in reverse order (see
Figure 17).
Note: Generally if the replacement blade is
the same gauge, width, and type, blade guide
adjustment is not necessary. Otherwise, you
must re-adjust the blade guides.
9.
Close and secure the upper and lower wheel
doors.
Figure 17. Placing blade on upper wheel.
Note: Make sure the teeth are pointing down
toward the table. If the teeth will not point
downward in any orientation, the blade is
inside out. Remove the blade and twist it right
side-out.
-24-
G0668 20" Vertical Metal-Cutting Bandsaw
blade tensioning
Blade Tensioning
Guide Post
Proper blade tension reduces the risk of blade
breakage and improves cutting performance.
The guide post assembly is used for two purposes: 1) To properly position the blade guard to protect the operator from the exposed blade between
the workpiece and the upper wheel housing, and
2) to position the upper blade guides close to the
workpiece for blade support.
To correctly tension the blade:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Open the upper wheel door, and raise the
blade post and upper blade guide assembly
to the highest position.
3.
Check the side-to-side deflection of the blade
midway between the upper blade guide and
the table. The proper amount of deflection
should be approximately 3⁄8" when moderate
pressure is applied (see Figure 18).
Note: The quickest and easiest way to check
blade tension is to use the Model H5408
Blade Tensioning Gauge for a recommended setting of 25,000–30,000 PSI (refer to
Page 31).
In order to cut accurately and safely, position the
bottom of the upper blade guides approximately
1
⁄4" above the workpiece—this positioning provides the greatest blade support and minimizes
the amount of blade exposed to the operator during operation.
To properly position the guide post:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Loosen the guide post lock knob (see Figure
19).
Guide
Post
Elevation
Handwheel
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Guide Post
Lock Knob
Blade
Guard
Figure 18. Blade deflection when correctly
tensioned.
4.
5.
Make small adjustments to the blade tensioning handwheel, then rotate the top wheel by
hand several times before checking the blade
deflection again. Repeat this step until you
are satisfied.
Close the upper wheel door and reposition
the guide post.
Blade Guides
& Air Nozzle
Guide Post
Figure 19. Guide post assembly.
3.
Use the guide post elevation handwheel to
position the bottom of the upper blade guides
approximately 1⁄4" above the workpiece, then
re-tighten the lock knob.
NOTICE
To prolong blade life, release the tension on
the blade if the machine will be idle for an
extended period of time.
G0668 20" Vertical Metal-Cutting Bandsaw
-25-
adjusting blade guides
Adjusting Blade
Guides & Supports
Blade Support
Cap Screw
The blade guides and supports provide side-toside and rear support to keep the blade straight
while cutting. These devices have tungsten steel
facing to reduce wear on the surfaces. Properly
adjusted blade guides and supports are essential
to making accurate cuts.
Blade Guide Bracket
Cap Screw
To properly adjust the upper and lower blade
guides and supports:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Make sure the bandsaw blade is properly tensioned (refer to Page 25) and the blade post
is in the correct position and locked.
3.
Use a 6mm hex wrench to loosen the cap
screws that secure the blade guide bracket
and blade support (see Figures 20–21).
Figure 21. Lower blade guides and bracket.
4.
Position the blade guides so that they are
approximately 1⁄16" behind the tooth gullets
(see Figure 22), then re-tighten the blade
guide bracket cap screw.
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Blade Guide Bracket Cap Screw
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Figure 22. Blade guides positioned
approximately 1⁄16" behind tooth gullets.
Blade Support
Cap Screw
Figure 20. Upper blade guides and bracket.
The bandsaw blade is
sharp and can easily cut
your hand or fingers.
Always disconnect the
power and wear heavy
leather gloves when
making adjustments to
or near the blade.
-26-
NOTICE
The blade guides must be adjusted far
enough back so that they are behind the
tooth gullets when the blade is deflected
back against the blade support during operation. Otherwise, the teeth will be damaged
as they come in contact with the blade
guides.
G0668 20" Vertical Metal-Cutting Bandsaw
5.
Slide the blade support (see Figure 23) up to,
but not touching, the back of the blade, then
re-tighten the blade support cap screw.
9.
Lightly pinch the dollar bill against the blade
with the blade guides, re-position the air
nozzle if necessary, then re-tighten the blade
guide cap screws.
Note: The goal is to position the blade guides
as close as possible to the blade without
touching it during operation.
Blade Guide
Cap Screws
Air Nozzle
Adjusting Table Tilt
To perform beveled cuts, the bandsaw table tilts
15° to the left and 45° to the right.
Blade Support
Figure 23. Blade guide assembly (upper
assembly shown without blade for clarity).
6.
Rotate the upper wheel by hand so that the
blade weld is between the blade guides.
7.
Use a 4mm hex wrench to loosen the blade
guide cap screws (see Figure 23).
8.
Fold a crisp dollar bill in half and place it over
the blade (between the blade guides and the
blade), as shown in Figure 24.
To adjust the table tilt:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Use a 23mm wrench to loosen the hex
nut underneath the rear of the table (see
Figure 25).
Table Tilt Scale
Hex Nut
Figure 25. Table tilt scale and hex nut.
3.
Using the table tilt scale, adjust the angle of
the table for your operation, then re-tighten
the hex nut.
Figure 24. Using a dollar bill to set blade guide
spacing.
G0668 20" Vertical Metal-Cutting Bandsaw
-27-
blade welding
Blade Welding
Being able to quickly and safely weld a bandsaw
blade comes in handy for the following situations:
•
To repair a broken blade that is still sharp and
useful.
•
To fabricate a new blade from a larger section of blade material to fit your bandsaw.
•
To re-join a blade that has been purposely
cut for making an internal cut.
Your metal cutting bandsaw is equipped with
a blade welder that uses electrical resistance
to heat and fuse the blade ends together. This
process leaves the joint brittle, so it needs to be
annealed after welding to give it strength and flexibility.
3.
To make a proper blade weld, the ends of
the blade must be evenly butted together
during the welding process. If necessary, use
the grinder to square up the ends or remove
any teeth that are in the welding zone (see
Figures 27–28).
Figure 27. Using the grinder to square up the
blade end.
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The electric current that flows through the
blade welder during operation could cause
serious personal injury or death. To avoid
the risk of electrocution, never touch the
blade or any metal part of the machine during blade welding or annealing.
To weld the ends of bandsaw together:
1.
Turn the bandsaw motor OFF.
2.
Place the blade evenly against the back of
the blade shear and firmly pull the handle
down to square off the blade end (see Figure
26).
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Figure 28. Blade ends and welding zone.
Figure 26. Using the blade shear to cut the
blade.
-28-
G0668 20" Vertical Metal-Cutting Bandsaw
4.
Loosen the welding clamps by pulling the
lock levers down.
5.
Position the back of one blade end evenly
against the back of the welding clamp so that
the end is midway between the two clamps,
then rotate that lock lever all the way up to
hold the blade end in place (see Figure 29).
Welding
Clamp
Blade
End
7.
Place the other blade end in the opposite
welding clamp and position it so that it evenly
butts up against the opposing blade end, then
lock it in place by rotating that lock lever all
the way up, as shown in Figure 30.
Note: For a good blade weld, it is critical that
the blade ends evenly butt up against each
other.
8.
Use the chart in Figure 31 and turn the
clamping pressure dial to the correct setting
for the blade.
Blade Width
Pressure Setting
Up to ⁄4"
1
⁄4" to ⁄ 8"
2–3
Above 3 ⁄ 8"
4+
1
1
Lock Lever
3
Figure 31. Blade clamping pressure chart.
Figure 29. Blade end properly position in
welding clamp and locked in place.
6.
Set the clamping pressure dial to "0" (see
Figure 30).
Note: As the blade material melts to form the
weld, pressure is applied to the joint by the
welding clamps. The correct amount of pressure is set with the clamping pressure dial in
a later step.
Burning sparks from the blade welding operation may be thrown in all directions and
could cause serious personal injury or fire.
When using the blade welder, always protect
yourself from the flying sparks and have fire
extinguishing equipment readily available.
DO NOT weld near flammables.
9.
Press and release—DO NOT hold—the welding button.
Note: There is a limit switch that senses the
electrical resistance between the blade ends.
If there is a adequate amount of welded material, the limit switch will not allow the welding
button to activate the operation again.
Welding
Button
Clamping
Pressure
Dial
Annealing
Button
Figure 30. Blade ends in correct position for
welding.
G0668 20" Vertical Metal-Cutting Bandsaw
-29-
10. After the welding operation is complete,
rotate the lock levers down to release the
welding clamps, then rotate the clamping
pressure dial to "0".
11. Inspect the weld. The welded joint should be
even across the width of the blade with no
gaps (see Figure 32).
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16. Allow the blade to fully cool, then re-inspect
the weld.
17. Grind away the weld flash on either side of
the joint and the back of the blade until the
weld is flat and the�������
blade will run smoothly on
the wheels.
Note: Make sure not to grind the teeth or
blade body, or overheat
the blade during
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grinding—this will weaken the blade.
18. Re-clamp the blade in the welding clamps
with the joint centered, then repeat Step 14
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twice more.
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Figure 32. Blade welded joint examples.
19. Test the strength and flexibility of the weld
by bending the blade in an arc similar to
that of the bandsaw wheels. The blade
should bend smoothly without any angles
(see Figure 33).
�������
—If the weld is satisfactory, continue to Step
12.
—If the weld is NOT satisfactory, begin again
at Step 2.
12. Set the clamping�������
pressure dial to 4 or greater
to bring the welding clamps close together.
13. Place the blade in the welding clamps with
the weld centered between the clamps and
re-tighten the lock levers.
Note: The welding operation has left the
�����������
blade joint brittle.
Annealing will allow the
material to cool in gradual manner, giving the
weld strength and flexibility.
14. Rapidly press and release—DO NOT hold—
the annealing button two or three times until
the weld zone turns dull red.
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Figure 33. Correct blade weld bend for strength
and flexibility.
NOTICE
For good metal-to-metal contact between
the welding clamps and the blade, make
sure the blade material and the clamps are
free from any debris or flash before each
use.
15. Repeat Step 14 three to four more times,
allowing the weld to cool for about 30 seconds between each repetition.
-30-
G0668 20" Vertical Metal-Cutting Bandsaw
accessories
SECTION 5: ACCESSORIES
T20501—Face Shield, 4" Crown, Clear
T20502—Face Shield, 7" Crown, Clear
T20448—Economy Clear Safety Glasses
T20452—"Kirova" Anti-Relective Glasses
T20456—"Dakura" Clear Safety Glasses
H0736—Shop Fox® Safety Glasses
These glasses meet ANSI Z87.1-2003 specifications. Buy extras for visitors or employees. You
can't be too careful with shop safety!
T20448
Grizzly Metal-Cutting Bandsaw Blades
Variable Pitch, 1" Width, 0.035" Gauge
T20523—3–4 VP TPI
T20524—4–6 VP TPI
T20525—5–8 VP TPI
T20526—6–10 VP TPI
T20527—8–12 VP TPI
T20528—10–14 VP TPI
H5408—Blade Tensioning Gauge
The Blade Tensioning Gauge ensures long blade
life, reduced blade breakage, and straight cutting
by indicating correct tension. A precision dial indicator provides you with a direct readout in PSI.
T20452
T20501
T20456
H0736
Figure 34. Our most popular eye protection.
T20514—Small Half-Mask Respirator
T20515—Medium Half-Mask Respirator
T20516—Large Half-Mask Respirator
T20511—Pre-Filter P100
T20539—Cartridge Filter 2PK P100
T20541—Cartridge Filter 2PK P100 & O Vapor
Wood and other types of dust can cause severe
respiratory damage. If you work around dust everyday, a half-mask respirator can greatly reduce
your risk. Compatible with safety glasses!
Figure 36. H5408 Blade Tensioning Gauge.
G5562—SLIPIT® 1 Qt. Gel
G5563—SLIPIT® 12 oz Spray
G2871—Boeshield® T-9 12 oz Spray
H3788—G96® Gun Treatment 12 oz Spray
Figure 35. Half-mask respirator with disposable
cartridge filters.
Figure 37. Recommended products for protecting unpainted cast iron/steel part on machinery.
G0668 20" Vertical Metal-Cutting Bandsaw
-31-
SECTION 6: MAINTENANCE
Cleaning
Always disconnect power
to the machine before
performing maintenance.
Failure to do this may
result in serious personal injury.
Schedule
For optimum performance from your machine,
follow this maintenance schedule and refer to any
specific instructions given in this section.
Use a brush and a shop vacuum to remove chips
and other debris from the machine. Keep the table
rust-free with regular applications of products like
G96® Gun Treatment, SLIPIT®, or Boeshield® T-9
(see Section 5: Accessories on Page 31).
Once a month, remove the blade and thoroughly
clean all metal chips and built-up oil or sludge
from the wheel surfaces. Redress the rubber tires
if necessary (Page 33).
When cleaning the wheel areas, empty and clean
the chip pan (see Figure 38).
Daily:
•
Check/correct damaged or dull saw blade.
•
Check/correct worn or damaged wires.
•
Clean/protect table.
•
Clean metal chips from upper and lower
wheel areas and the lower wheel brush, and
empty bottom chip pan.
•
Correct any other unsafe condition.
Monthly:
•
Check for V-belt tension, damage, or wear.
•
Lubricate tension leadscrews and guide post
rack.
•
Remove the blade and clean the wheels.
•
Re-adjust the lower wheel brush.
-32-
Figure 38. Lower wheel chip pan.
G0668 20" Vertical Metal-Cutting Bandsaw
redressing
Redressing Rubber
Tires
When the leadscrew and rack are thoroughly clean
and dry, brush a light coat of automotive-grade
multi-purpose grease on the tension leadscrew
and guide post rack to maintain smooth operation
(see Figure 39).
As the bandsaw ages, the rubber tires on the
wheel may need to be redressed if they become
hardened or glazed over. Redressing the rubber
tires improves blade tracking and reduces vibration/blade lead.
If the rubber tires become too worn, then blade
tracking will become extremely difficult. At that
point, redressing will no longer be effective, and
the rubber tires must be replaced.
To redress the rubber tires:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Put on heavy gloves and remove the blade.
3.
Use a brush and shop vacuum to clean any
chips and built-up oil or sludge from the rubber tires.
4.
Hold a piece of 100-grit sandpaper against
the rubber tire and rotate the wheel by hand.
Only redress the rubber enough to expose a
fresh rubber surface.
Guide Post Rack
Tension
Leadscrew
Figure 39. Tension leadscrew and guide post
rack.
If the table becomes difficult to tilt, position it so
that you use the same process described above
to clean the metal surfaces of the trunnion and
table. Then brush a thin coat of automotive-grade
multi-purpose grease on the trunnion surfaces
(see Figure 40). Tilt the table back and forth to
distribute the grease.
Lubrication
The bearings on your bandsaw are factory lubricated and sealed. Merely leave them alone unless
they need to be replaced.
Before lubricating the tension leadscrew or guide
post rack, wipe as much of the old grease off as
possible. The old grease will be contaminated with
metal dust and increase the wear of the metal surfaces. Use mineral spirits or the degreaser shown
in Figure 4 on Page 12 to clean any remaining
grease off, making sure to thoroughly wipe off the
degreaser or mineral spirits that may contaminate
the new grease.
G0668 20" Vertical Metal-Cutting Bandsaw
Trunnion
Surfaces
Figure 40. Table tilted to expose trunnion
surfaces.
-33-
troubleshooting
SECTION 7: SERVICE
Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem develops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical
Support at (570) 546-9663.
Troubleshooting
Motor & Electrical
Symptom
Possible Cause
Machine does not 1. Power switch key is removed or not in ON
start or a breaker
position.
trips.
2. Emergency stop push-button is engaged/
faulty.
3. Plug/receptacle is at fault or wired incorrectly.
4. Motor connection wired incorrectly.
5. Wall fuse/circuit breaker is blown/tripped.
6. Power supply switched OFF or is at fault.
7. Wiring is open/has high resistance.
8. Inverter is at fault.
9. Motor is at fault.
Machine stalls or is 1. Feeding workpiece too fast.
overloaded.
2. Workpiece alignment is poor.
3. Wrong workpiece material or blade.
4. Blade is slipping on wheels.
5. Motor connection is wired incorrectly.
6. V-belt(s) slipping.
7. Plug/receptacle is at fault.
8. Pulley/sprocket slipping on shaft.
9. Motor bearings are at fault.
10. Machine is undersized for the task.
11. Motor has overheated.
12. Motor is at fault.
-34-
Possible Solution
1. Install power switch key and turn it to the ON position.
2. Rotate clockwise until it pops out; replace it if faulty.
3. Test for good contacts; correct the wiring.
4. Correct motor wiring connections (Page 45).
5. Ensure circuit size is suitable for this machine;
replace weak breaker.
6. Ensure power supply is switched on; ensure power
supply has the correct voltage.
7. Check for broken wires or disconnected/corroded
connections, and repair/replace as necessary.
8. Replace inverter.
9. Test/repair/replace.
1. Reduce feed rate; increase blade speed.
2. Eliminate workpiece binding; use jig, fence, guide,
clamps, roller table, or push blocks as required for
workpiece alignment control.
3. Use metal with correct properties for your type of
machining; match blade with workpiece and operation.
4. Adjust blade tracking and tension (Page 25), redress
rubber wheel tires if necessary (Page 33).
5. Correct motor wiring connections (Page 45).
6. Replace bad V-belt(s) as a matched set, align pulleys, and re-tension (Pages 36 & 37).
7. Test for good contacts; correct the wiring.
8. Replace loose pulley/shaft.
9. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
10. Use sharp blade with lower TPI; reduce the feed
rate; use a small amount of oil-based coolant if necessary.
11. Clean off motor, let cool, and reduce workload.
12. Test/repair/replace.
G0668 20" Vertical Metal-Cutting Bandsaw
Motor & Electrical (continued)
Symptom
Possible Cause
Possible Solution
1. Inspect/replace V-belts with a new matched set
(Pages 36 & 37).
2. Realign/replace shaft, pulley, set screw, and key as
required.
Motor mount loose/broken.
3. Tighten/replace.
Machine is incorrectly mounted or sits 4. Tighten/replace anchor studs in floor; relocate/shim
unevenly.
machine.
Workpiece is loose.
5. Use the correct holding fixture and reclamp
workpiece.
6. Replace dented fan cover; replace loose/damaged
Motor fan is rubbing on fan cover.
fan.
7. Test by rotating shaft; rotational grinding/loose shaft
Motor bearings are at fault.
requires bearing replacement.
8. Re-tension/replace blade (Pages 24 & 25).
Blade is at fault.
Blade wheels out of alignment.
9. Re-align blade wheels (Page 38).
Machine has vibra- 1. V-belt(s) worn or loose.
tion or noisy operation.
2. Pulley is loose.
3.
4.
5.
6.
7.
8.
9.
Cutting Operations
Symptom
Possible Cause
Machine slows when 1. Feeding workpiece too fast.
operating.
2. Blade is dull.
Possible Solution
1. Reduce feed rate/increase blade speed.
2. Replace blade (Page 24).
Ticking sound when 1. Blade weld contacting blade guide/support 1. Inspect/re-grind blade weld (Page 28); re-adjust
the saw is running.
(a light ticking is normal).
blade guides/support (Page 26).
2. Blade weld may be failing.
2. Inspect weld and re-weld blade if necessary (Page
28), or replace blade (Page 24).
Blade
table.
contacting 1. Table improperly mounted or aligned.
Vibration when cut- 1. Workpiece is loose.
ting.
2. Loose or damaged blade.
3. Metal chip buildup on wheels.
1. Properly align table (Page 40).
1. Use the correct holding fixture and reclamp
workpiece.
2. Re-tension/replace blade (Pages 24 & 25).
3. Clean metal chips from wheels.
1. Reduce feed rate/increase blade speed.
Rough or poor qual- 1. Feeding workpiece too fast.
ity cuts.
2. Incorrect blade for operation; worn or dam- 2. Use the correct blade for the operation (Page 19);
aged blade.
replace worn or damaged blade (Page 24).
3. Blade guides/support adjusted incorrectly.
3. Correctly adjust blade guides/support (Page 26);
set the blade guides approximately 1/8" above
workpiece.
Blade wanders or 1. Blade lead.
doesn't cut straight. 2. Metal chip buildup on wheels.
1. Re-tension/replace blade (Pages 24 & 25).
2. Clean metal chips from wheels.
Cuts are not square 1. Table tilt is not adjusted to "0".
(vertically).
2. Table is not square to the blade.
1. Adjust table to "0" tilt.
2. Adjust table square with blade (Page 40).
Wheel is noisy.
1. Replace wheel bearing.
2. Check/re-tension the V-belt (Page 36).
1. Wheel bearing is worn out.
2. V-belt is too tight (lower wheel).
Blade does not track 1. Wheels are not coplanar or aligned with 1. Adjust wheels to be coplanar/aligned with one
consistently, coranother (Page 38).
each other.
rectly, or at all.
2. Rubber tires on wheels are worn out.
2. Redress the rubber tires on the wheels (Page 33).
G0668 20" Vertical Metal-Cutting Bandsaw
-35-
pulley alignment
tensioning v-belts
Lower Wheel Pulley
Alignment
Tools Needed:
Qty
Hex Wrench 6mm.............................................. 1
Wrench 19mm ................................................... 1
The correct alignment of the motor and lower
wheel pulleys helps to ensure correct and even
tension of the V-belts, proper power transmission,
and reduced V-belt heat and wear during operation.
Remove the rear motor access panel, and use
a straightedge across both pulleys, as shown in
Figure 41, to check the pulley alignment.
Wheel Pulley
Hex Bolts
Tensioning V-Belts
Tools Needed:
Qty
Wrench 12mm ................................................... 1
To ensure optimum power transfer from the motor
to the blade without slipping, the V-belts must be
in good condition and operate under proper tension. Check V-belt tension at least monthly—more
often if the bandsaw is used daily. V-belts stretch
with use and must be periodically re-tensioned.
To check/tension/replace the V-belts:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Remove the rear motor access panel.
3.
Make sure the motor and lower wheel pulleys
are correctly aligned.
4.
Push the center of each V-belt as illustrated
in Figure 42, using moderate force. When
tensioned correctly, the deflection should be
about 3⁄4".
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Figure 41. Checking pulley alignment.
If necessary, loosen the fasteners securing the
wheel pulley to the shaft, align the wheel pulley
with the motor pulley, then re-tighten the fasteners
for both pulleys.
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Figure 42. Checking for correct V-belt tension.
—If the deflection is correct and the V-belts
are in good condition, no further action is
required. Replace the rear motor access
panel.
—If the deflection is more than or less than
3
⁄4" or the V-belts need to be replaced, then
continue with the next steps.
-36-
G0668 20" Vertical Metal-Cutting Bandsaw
replacing v-belts
5.
Adjusting Wheel
Brush
Loosen the four motor mounting hex bolts
(see Figure 43).
Motor Mounting Hex Bolts
(3 of 4 shown)
Tools Needed:
Qty
Wrench 10mm ................................................... 1
The lower wheel compartment contains the wheel
brush shown in Figure 44. This brush is designed
to sweep chips off the wheel tire as the bandsaw
is operating. In order to work properly, the brush
must make firm contact with the wheel.
Figure 43. Motor mounting hex bolts.
6.
Wheel Brush
Position the motor to adjust the V-belt tension
until they have the correct deflection, then retighten the hex bolts.
Replacing V-Belts
Tools Needed:
Qty
Wrench 12mm ................................................... 1
Replace the V-belts as a matched set if they are
cracked, frayed, or excessively worn.
Figure 44. The wheel brush.
To replace the motor V-belts:
To adjust the wheel brush:
1.
DISCONNECT BANDSAW FROM POWER!
1.
DISCONNECT BANDSAW FROM POWER!
2.
Loosen the four motor mounting hex bolts
(see Figure 43).
2.
Open the lower wheel cover.
3.
Move the motor toward the lower wheel to
relieve the tension, then roll the V-belts off
the pulleys.
Loosen the hex bolt that secures the wheel
brush.
4.
Install a new matched set of V-belts onto
the pulleys, then correctly tension them, as
described on Page 36.
Adjust the wheel brush so that it makes firm
contact with the wheel but the bristles are not
overly bent.
5.
Re-tighten the hex bolt to secure the wheel
brush in place, and close the lower wheel
door.
3.
4.
5.
Secure the motor access panel to the machine
before re-connecting it to power.
G0668 20" Vertical Metal-Cutting Bandsaw
-37-
wheel alignment
Wheel Alignment
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Materials Needed:
Qty
671⁄4" Long 2x4 .................................................. 1
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Tools Needed:
Qty
Wrench 12mm ................................................... 1
Wrench 17mm ................................................... 1
Wrench 21mm ................................................... 1
Coplanarity Gauge (see Figure 45). ................. 1
Wheel alignment is one of the most critical factors
for optimal performance from your bandsaw.
Heat, vibration, wandering, blade wear, tire wear,
and overall bandsaw wear are considerably
decreased when the wheels are properly aligned
or "coplanar".
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To check if your wheels are parallel and coplanar:
1.
Make the "Coplanarity Gauge" shown in
Figure 45.
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Note: For best results, straighten the 2x4
with a jointer before cutting.
2.
DISCONNECT BANDSAW FROM POWER!
3.
Remove the table assembly, then open both
wheel covers.
4.
Move the upper and lower blade guides and
rear support away from the blade, then correctly tension the blade for normal operations.
5.
Place your coplanarity gauge up against both
wheels in the positions shown in Figure 46,
making sure that the gauge fully extends
across the wheels.
—If the wheels are parallel and coplaner (in
the same plane), the gauge will evenly
touch the top and bottom of both wheels
and no further adjustments are necessary.
—If the wheels are NOT parallel or coplanar,
continue with the following steps to bring
both wheels into correct alignment with one
another.
-38-
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Figure 45. Dimensions of coplanarity gauge.
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Figure 46. Coplanarity gauge positions.
G0668 20" Vertical Metal-Cutting Bandsaw
Although both wheels can be adjusted to accomplish correct wheel alignment, we recommend that
you start with the upper wheel, and, if necessary,
continue the adjustments with the lower wheel.
The lower wheel adjustment assemblies have
a locking hex bolt threaded into an adjustment
sleeve (see Figure 48).
Lower Wheel
Adjustment Assemblies
(3 of 4 shown)
When both wheels are correctly aligned with one
another, re-check V-belt tension (Page 36), reinstall the table, re-check table alignment (Page
40), and re-adjust the blade guides and supports.
The upper wheel adjusting fasteners consist of
four locking hex bolts and four adjusting hex bolts
with jam nuts (see Figure 47).
Figure 48. Lower wheel adjustment assemblies.
Locking Hex Bolt
Adjustment
Hex Bolt
& Jam Nut
To adjust the lower wheel:
1.
Loosen the locking hex bolts of the lower
wheel.
2.
Loosen or tighten the adjustment sleeves as
necessary to bring the lower wheel coplanar
with the upper wheel.
Example 1: If the top of the lower wheel
leans too far forward (see fourth example in
Figure 49), thread the top two adjustment
sleeves out.
Figure 47. Upper wheel adjusting fasteners.
To adjust the upper wheel:
1.
Loosen the upper wheel locking hex bolts,
then loosen the jam nuts (see Figure 47).
2.
Use the adjustment hex bolts to bring the
upper wheel coplanar with the lower wheel.
Note: Threading an adjustment hex bolt
in will force that part of the wheel forward.
Conversely, threading an adjustment hex bolt
out will pull that wheel section to the rear of
the machine when the locking hex bolt is retightened.
3.
Re-tighten the locking hex bolts and jam nuts
to secure the settings of the adjustment hex
bolts.
4.
Re-check the wheels for alignment and repeat
the steps above if necessary.
G0668 20" Vertical Metal-Cutting Bandsaw
Example 2: Alternately, if the lower wheel
is parallel to the upper wheel but behind
the plane of the upper wheel (see second
example in Figure 49), then thread all four
adjustment sleeves in.
3.
Re-tighten the locking hex bolts to secure the
settings of the adjustment sleeves.
4.
Re-check the wheels for alignment and repeat
the steps above if necessary.
-39-
table alignment
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Figure 49. Examples of wheel orientation to one another.
Aligning Table to
Blade
4.
Use a square to check table alignment with
the side and the back of the blade, as shown
in Figure 50.
To ensure the angle accuracy of the cut, the table
must be 90° to the blade from front-to-back and
side-to-side. If the table is not square to the blade,
it needs to be adjusted.
Tools Needed:
Qty
Hex Wrench 5mm.............................................. 1
Wrench 12mm ................................................... 1
To adjust the table square to the blade:
1.
DISCONNECT BANDSAW FROM POWER!
2.
Make sure the wheels are correctly aligned
(Page 38) and the blade is properly tensioned (Page 25).
3.
Set the angle of the table to "0".
-40-
Figure 50. Checking table alignment with the
blade.
G0668 20" Vertical Metal-Cutting Bandsaw
5.
Loosen the table mounting hex bolts (see
Figure 51).
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Set Screws
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Mounting
Hex Bolts
Figure 51. Table mounting hex bolts and
adjusting set screws.
6.
Adjust the set screws so that the table is
square to the blade front-to-back and side-toside.
Note: Make small adjustments to the set
screws, then recheck the alignment of the
table with the blade.
7.
When the table is 90° to the blade from
front-to-back and side-to-side, re-tighten the
mounting hex bolts to secure the table alignment.
Blade Guides
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Figure 52. Blade guide and support orientation.
As the blade is deflected back into the blade
support during operation, a groove will eventually wear into the blade support. As this groove
becomes deeper, it can affect the accuracy of the
cut. When this happens, loosen the blade support
cap screw and rotate the blade support, as shown
in Figure 52.
Note: Make sure to re-adjust the blade guides
and support (as directed in Adjusting Blade
Guides & Support on Page 26) after making
these changes.
The inserts in the face of the blade guides and the
blade support are made of tungsten steel.
With use, the front of the blade guide inserts will
wear and it may become difficult to properly adjust
the guides to the blade (refer to Adjusting Blade
Guides & Support on Page 26). If this is the
case, swap and turn over the blade guides so that
the inserts are reversed relative to the blade (see
Figure 52).
G0668 20" Vertical Metal-Cutting Bandsaw
-41-
electrical & switch wiring diagram
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Electrical Panel (see Figure 57 on Page 44)
Electrical & Control Wiring Diagram
Control Panel
(see Figure 55 on Page 44)
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(see Wiring
Diagram
on Page 43)
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Connect the
manufactured
leg of a power
converter to the
"S" terminal here.
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(see Photo & Wiring
Diagram on Page 45)
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(see Photo & Wiring
Diagram on Page 46)
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-42-
G0668 20" Vertical Metal-Cutting Bandsaw
inverter wiring diagram
Inverter Wiring Diagram
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Figure 53. Digital
display wiring.
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Figure 54. Variable
speed dial wiring.
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To Motor
(see Photo &
Wiring Diagram
on Page 45)
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To Electrical Panel
(see Figure 57 on
Page 44, Wiring
Diagram on Page 42)
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Inverter
(see Figure 56 on Page 44)
G0668 20" Vertical Metal-Cutting Bandsaw
-43-
electrical components
Electrical Components
Power
Lamp
Emergency
Stop
Power
Switch
Bandsaw
Start
Figure 55. Control panel wiring (see wiring
diagram on Page 42).
Figure 56. Inverter/Controller box wiring (see
wiring diagram on Page 43).
Figure 57. Main electrical wiring (see wiring diagram on Page 42).
-44-
G0668 20" Vertical Metal-Cutting Bandsaw
motor wiring diagram
Motor Wiring Diagram
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Figure 58. Motor junction box
wiring.
Motor
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Motor Fan
Wiring
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To Control Panel
(see Page 42)
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G0668 20" Vertical Metal-Cutting Bandsaw
-45-
welding station wiring diagram
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Welding Station Wiring Diagram
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To Electrical Panel
(see Page 42)
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-46-
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G0668 20" Vertical Metal-Cutting Bandsaw
SECTION 8: PARTS
Cabinet
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REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
1
2
3
4
4-1
4-2
4-3
4-4
5
6
7
8
9
10
11
12
13
14
15
16
WHEEL DOOR LOWER
HINGE PIN LOWER
PHLP HD SCR M5-.8 X 8
CONTROL PANEL
POWER SWITCH W/KEY
POWER LAMP
EMERGENCY STOP BUTTON
MOTOR ON BUTTON
BLADE CLEANING BRUSH
PHLP HD SCR M6-1 X 25
WHEEL DOOR UPPER
HINGE PIN UPPER
PHLP HD SCR M5-.8 X 8
DIGITIAL DISPLAY BRACKET
CAP SCREW M8-1.25 X 16
BLADE SHEAR
VARIABLE SPEED DIAL
AIR PUMP
BANDSAW CABINET
AIR HOSE 4X6MM
17
18
18-1
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
AIR NOZZLE
WORK LAMP 220V
LIGHT BULB 220V
DOOR KNOB
PHLP HD SCR M6-1 X 25
CAP SCREW M6-1 X 15
FLAT WASHER 6MM
MOTOR ACCESS PANEL
FLAT WASHER 6MM
HEX BOLT M6-1 X 10
CHIP PAN
DIGITAL DISPLAY
INVERTER RM5G 2HP 220V 3PH
CONTROL PANEL
TRANSFORMER 1PH 0-3VA
CONTACTOR NHD C-12D 220V
RELAY ARITA MR2P 24V 3-5A
FUSE HOLDER
FUSE 3A
TERMINAL BLOCK 11-POST
P0668001
P0668002
PS05M
P0668004
P0668004-1
P0668004-2
P0668004-3
P0668004-4
P0668005
PS47M
P0668007
P0668008
PS05M
P0668010
PSB11M
P0668012
P0668013
P0668014
P0668015
P0668016
G0668 20" Vertical Metal-Cutting Bandsaw
P0668017
P0668018
P0668018-1
P0668019
PS47M
PSB28M
PW03M
P0668023
PW03M
PB04M
P0668026
P0668027
P0668028
P0668029
P0668030
P0668031
P0668032
P0668033
P0668034
P0668035
-47-
Table & Lower Guide
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REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
101
102
103
104
105
106
107
108
109
CAP SCREW M6-1 X 20
LOCK WASHER 6MM
BLADE GUIDE
BLADE GUIDE BRACKET LOWER
GUIDE POST LOWER
CAP SCREW M6-1 X 25
BLADE SUPPORT
HEX NUT 5/8-11
LOCK WASHER 5/8
110
111
112
113
114
115
116
117
FLAT WASHER 8MM
CAP SCREW M8-1.25 X 20
TRUNNION BASE
CAP SCREW M8-1.25 X 20
FLAT WASHER 8MM
TRUNNION
TABLE TILT LOCK 5/8-11 X 2
TABLE
-48-
PSB02M
PLW03M
P0668103
P0668104
P0668105
PSB06M
P0668107
PN04
PLW06
PW01M
PSB14M
P0668112
PSB14M
PW01M
P0668115
P0668116
P0668117
G0668 20" Vertical Metal-Cutting Bandsaw
Motor & Lower Wheel
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REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
201
202
203
204
205
206
207
208
209
210
211
WHEEL TIRE
BANDSAW BLADE 3/8"W STANDARD
WHEEL LOWER
HEX BOLT M10-1.5 X 10
COLLAR
SET SCREW M8-1.25 X 8
BALL BEARING 6206Z
KEY 8 X 8 X 20
LOWER WHEEL SHAFT
SPECIAL SCREW
HEX BOLT M10-1.5 X 50
212
213
214
215
216
217
218
219
219-1
219-2
219-3
BEARING HOUSING
EXT RETAINING RING 30MM
WHEEL PULLEY
SET SCREW M12-1.75 X 35
V-BELT A-66 4L660
MOTOR PULLEY
SET SCREW M8-1.25 X 10
MOTOR 2HP 220V 3PH
MOTOR FAN COVER
MOTOR FAN
MOTOR WIRING JUNCTION BOX
P0668201
P0668202
P0668203
PB170M
P0668205
PSS20M
P6206Z
PK107M
P0668209
P0668210
PB73M
G0668 20" Vertical Metal-Cutting Bandsaw
P0668212
PR15M
P0668214
PSS105M
PVA66
P0668217
PSS16M
P0668219
P0668219-1
P0668219-2
P0668219-3
-49-
-50-
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Welding Station
G0668 20" Vertical Metal-Cutting Bandsaw
Welding Station Parts List
REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
324-1
HEX BOLT 1/4-20 X 4
TRANSFORMER BRACKET
FLAT WASHER 6MM
HEX NUT M6-1
LIMIT SWITCH
CAP SCREW M6-1 X 25
CAP SCREW M6-1 X 10
LIMIT SWITCH BRACKET
SLIDING BLOCK
WELDING CLAMP LEFT
WELDING JAW LEFT
CAP SCREW M6-1 X 12
E-CLIP 6MM
SHAFT
CLAMP LEVER
CAP SCREW M6-1 X 12
SLIDING BLOCK BASE
CAP SCREW M6-1 X 16
GRINDER COVER
HEX NUT M6-1
FLAT WASHER 6MM
GRINDING WHEEL 2-1/2"D
FLAT WASHER 6MM
GRINDER MOTOR 1/8HP 220V 1PH
S CAPACITOR 3M 250V 3/4 X 1-1/4
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
ON/OFF SWITCH
PHLP HD SCR M6-1 X 16
PHLP HD SCR M6-1 X 20
WELDING PANEL
CLAMP PRESSURE KNOB
E-CLIP 6MM
CLAMP LEVER
SHAFT
WELDING CLAMP RIGHT
INSULATING PLATE
FLAT WASHER 6MM
CAP SCREW M6-1 X 20
CAP SCREW M6-1 X 20
WELDING JAW RIGHT
CAP SCREW M6-1 X 20
HEX NUT M6-1
FLAT WASHER 6MM
PRESSURE CAM
CAM SHAFT
TENSION SPRING
PHLP HD SCR 1/4-20 X 1/2
BRACKET
ANNEALING PUSH BUTTON
WELDING PUSH BUTTON
TRANSFORMER 4.2KVA 220V
PB96
P0668302
PW03M
PN01M
P0668305
PSB06M
PSB04M
P0668308
P0668309
P0668310
P0668311
PSB26M
PEC09M
P0668314
P0668315
PSB26M
P0668317
PSB01M
P0668319
PN01M
PW03M
P0668322
PW03M
P0668324
P0668324-1
G0668 20" Vertical Metal-Cutting Bandsaw
P0668325
PS11M
PS26M
P0668328
P0668329
PEC09M
P0668331
P0668332
P0668333
P0668334
PW03M
PSB02M
PSB02M
P0668338
PSB02M
PN01M
PW03M
P0668342
P0668343
P0668344
PS04
P0668346
P0668347
P0668348
P0668349
-51-
Guide Post
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REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
501
502
503
504
505
506
507
508
509
510
511
512
513
CAP SCREW M6-1 X 20
FLAT WASHER 6MM
BLADE GUIDE
BLADE GUIDE BRACKET UPPER
BLADE SUPPORT
CAP SCREW M6-1 X 20
PIN 4 X 6
GUIDE POST CLAMP PLATE
GUIDE POST RACK
GUIDE POST BRACKET
LOCK WASHER 14MM
LOCK KNOB
SPECIAL SCREW
514
515
516
517
518
519
520
521
522
523
524
525
GUIDE POST PINION GEAR
WORM GEAR
COLLAR
HANDWHEEL HANDLE
HANDWHEEL
SET SCREW M6-1 X 6
BRACKET
LOCK WASHER 6MM
CAP SCREW M6-1 X 20
BLADE GUARD
FLAT WASHER 8MM
CAP SCREW M8-1.25 X 15
-52-
PSB02M
PW03M
P0668503
P0668504
P0668505
PSB02M
P0668507
P0668508
P0668509
P0668510
PLW08M
P0668512
P0668513
P0668514
P0668515
P0668516
P0668517
P0668518
PSS02M
P0668520
PLW03M
PSB02M
P0668523
PW01M
PSB100M
G0668 20" Vertical Metal-Cutting Bandsaw
Upper Wheel
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REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
603
604
605
606
607
608
609
610
611
612
613
614
WHEEL UPPER
HEX BOLT M10-1.5 X 10
EXT RETAINING RING 20MM
BALL BEARING 6304Z
BEARING HOUSING
UPPER WHEEL SHAFT
KEY
SPECIAL WASHER
SPECIAL BOLT
PIVOT PIN
HEX BOLT M8-1.25 X 25
FLAT WASHER 8MM
615
615-1
616
617
618
619
620
621
622
623
624
UPPER WHEEL BRACKET
BRACKET PLATE
SET SCREW M6-1 X 6
COLLAR
THRUST BEARING 2901
TENSIONING BRACKET
LEADSCREW BRACKET
HEX BOLT M8-1.25 x 25
HEX BOLT M8-1.25 X 10
TENSIONING LEADSCREW
TENSIONING HANDWHEEL
P0668603
PB170M
PR09M
P6304Z
P0668607
P0668608
P0668609
P0668610
P0668611
P0668612
PB07M
PW01M
G0668 20" Vertical Metal-Cutting Bandsaw
P0668615
P0668615-1
PSS02M
P0668617
P2901
P0668619
P0668620
PB07M
PB17M
P0668623
P0668624
-53-
Labels
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REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
401
402
403
404
405
406
MODEL # LABEL
BLADE SPECIFICATION LABEL
POWER DISCONNECT LABEL VERT S
EYE/LUNG HAZARD LABEL VERT L
READ MANUAL LABEL VERT L
GRIZZLY NAMEPLATE 9-1/2" X 4-1/2"
407
408
409
410
412
MACHINE ID LABEL
BLADE HAZARD LABEL VERT L
DOOR INJURY HAZARD LABEL VERT S
GRIZZLY PUTTY TOUCH UP PAINT
STABLE WORKPIECE LABEL
P0668401
P0668402
P0668403
P0668404
PLABEL-12
G8588
P0668407
P0668408
P0668409
PPAINT-11
P0668412
Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine
MUST maintain the original location and readability of the labels on the machine. If any label is
removed or becomes unreadable, REPLACE that label before using the machine again. Contact
Grizzly at (800) 523-4777 or www.grizzly.com to order new labels.
-54-
G0668 20" Vertical Metal-Cutting Bandsaw
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WARRANTY AND RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then
issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the
carton. We will not accept any item back without this number. Proof of purchase must accompany the
merchandise.
The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.
Please feel free to write or call us if you have any questions about the machine or the manual.
Thank you again for your business and continued support. We hope to serve you again soon.
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