914H Metal Cutting Band Saw

914H Metal Cutting Band Saw
www.trajansawworks.com
914H
Metal Cutting Band Saw
MODEL:
914H
INSTRUCTION MANUAL
!
WARNING !
Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State of
California to cause cancer, birth defects or other reprodrctive harm.
Some examples of these chemical are:
‧Lead from lead-based paints.
‧Crystalline silica from bricks, cement and other masonry products.
‧Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do
this type of work. To reduce your exposure to these chemicals: Work in
a well ventilated area, and word with approved safety equipment, such
as those dust masks that are specially designed to filter out
microscopic particles.
Table of Contents
1.Warnings....................................................................................................................................................... 1
2.How The 914H Band Saw Operates ............................................................................................................. 2
3.Specifications ................................................................................................................................................ 2
3-1.Model .............................................................................................................................................. 2
3-2.Standard Feature ............................................................................................................................ 3
3-3.Standard Equipment........................................................................................................................ 3
4.Description .................................................................................................................................................... 3
5.Installation..................................................................................................................................................... 4
5-1.General ............................................................................................................................................. 4
5-2.Machine Set up ................................................................................................................................. 4
5-3.Electrical Connections....................................................................................................................... 4
5-4.Cleaning............................................................................................................................................ 5
6.Operation ...................................................................................................................................................... 5
6-1.General ........................................................................................................................................... 5
6-2.Controls ........................................................................................................................................... 5
6-3.Changing blade speeds:.................................................................................................................. 5
7.Blade Selection ............................................................................................................................................. 6
7-1.Blade Removal and Installation ....................................................................................................... 6
7-2.Blade Break-In Procedures ............................................................................................................. 6
8.Controlling the Cut ........................................................................................................................................ 7
8-1.Hydraulic Feed Control.................................................................................................................... 7
8-2.Evaluating Cutting Efficiency ........................................................................................................... 7
8-3.Setting the Vise for Angle Cuts........................................................................................................ 7
8-4.Setting the Vise for Square Cuts ..................................................................................................... 7
9.Work Set up .................................................................................................................................................. 7
9-1.Setting the Blade Guide Bracket...................................................................................................... 7
9-2.Starting the Saw .............................................................................................................................. 7
10.Service and Maintenance .......................................................................................................................... 8
10-1.Adjustments................................................................................................................................... 8
10-2.Blade Tracking Adjustments .......................................................................................................... 8
10-3.Blade Guide Bearing Adjustment................................................................................................... 9
10-4.Cleaning ........................................................................................................................................ 9
10-5.Lubrication..................................................................................................................................... 10
10-6.Changing the Drive Motor V-Belt ................................................................................................... 10
10-7.Chip Brush and Chip Scraper Replacement .................................................................................. 10
10-8.Blade Guide Bearing Replacement ............................................................................................... 10
10-9.Drive Motor Replacement .............................................................................................................. 11
10-10.Adjusting or Replacing the Counterbalance................................................................................. 11
10-11.Replacing the Drive Wheel (Lower Wheel) .................................................................................. 11
10-12.Replacing the Idler Wheel or Bearings (Upper Wheel) ................................................................ 11
11.Transportation of Machine........................................................................................................................... 11
12.Troubleshooting .......................................................................................................................................... 12
1. Warnings
2.
1. Read and understand the entire owners
manual before attempting assembly or
operation.
2. Read and understand warnings posted on
the machine and in this manual. Failure to
comply with all of these warnings may cause
serious injury.
3. Replace warning labels if they become
obscured or removed.
4. This band saw is designed and intended for
use by properly trained and experienced
personnel only. If you are not familiar with the
proper and safe operation of a band saw, do
not use until proper training and knowledge
have been obtained.
5. Do not use this band saw for other than its
intended use. If used for other purposes,
WMH Tool Group disclaims any real or
implied warranty and holds itself harmless
from any injury that may result from that use.
6. Always wear approved safety glasses/face
shields while using this machine. Everyday
eyeglasses only have impact resistant
lenses; they are not safety glasses.
7. Before operating this machine, remove tie,
rings, watches, and other jewelry, and roll
sleeves up past the elbows. Remove all
loose clothing and confine long hair. Non-slip
footwear is recommended. Do not wear
gloves when operating the saw.
8. Wear ear protectors (plugs or muffs) during
extended periods of operation.
9. Some dust created by power sanding,
sawing, grinding, drilling and other
construction activities contain chemicals
known to cause cancer, birth defects or other
reproductive harm. Some examples of these
chemicals are:
• Lead from lead based paint.
• Crystalline silica from bricks, cement and
other masonry products.
• Arsenic and chromium from chemically
treated lumber.
Your risk of exposure varies, depending on
how often you do this type of work. To reduce
your exposure to these chemicals: work in a
well-ventilated area and work with approved
safety equipment, such as face or dust
masks that are specifically designed to filter
out microscopic particles.
10. Do not operate this band saw while tired or
under the influence of drugs, alcohol or any
medication.
11. Make certain the switch is in the OFF position
before connecting the machine to the power
supply.
12. Make certain the machine is properly
grounded.
13. Make
all
machine
adjustments
or
maintenance with the machine unplugged
from the power source.
14. Remove adjusting keys and wrenches. Form
a habit of checking to see that keys and
adjusting wrenches are removed from the
machine before turning it on.
15. Keep machine guards in place at all times
when the machine is in use. If removed for
maintenance purposes, use extreme caution
and replace the guards immediately.
16. Make sure the band saw is firmly secured to
the floor before use.
17. Check damaged parts. Before further use of
the machine, a guard or other part that is
damaged should be carefully checked to
determine that it will operate properly and
perform its intended function – check for
alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any
other conditions that may affect its operation.
A guard or other part that is damaged should
be properly repaired or replaced.
18. Provide for adequate space surrounding
work area and non-glare, overhead lighting.
19. Keep the floor around the machine clean and
free of scrap material, oil and grease.
20. Keep visitors a safe distance from the work
area. Keep children away.
21. Make your workshop kid proof with padlocks,
master switches or by removing starter keys.
22. Give your work undivided attention. Looking
around, carrying on a conversation and
“horse-play” are careless acts that can result
in serious injury.
23. Maintain a balanced stance at all times so
that you do not fall or lean against the saw
blade or other moving parts.
24. Use the right tool. Don’t force a tool or
attachment to do a job for which it was not
designed. The right tool will do the job better
and safer at the rate for which it was
designed.
25. Use recommended accessories; improper
accessories may be hazardous.
26. Maintain tools with care. Keep tools sharp
and clean for the best and safest
performance.
Follow
instructions
for
lubricating and changing accessories.
27. Make sure the work piece is securely
attached or clamped to the table. Never use
your hand to hold the work piece.
28. Never brush away chips while the machine is
running. Use the correct speed and feed for
the tool. Be sure that the tool is the correct
one for your operation.
29. Never stand on a machine. Serious injury
could occur if the machine tipped or if the
saw blade is unintentionally contacted.
30. Never
leave
the
machine
running
unattended. Turn the power off and don’t
leave the machine until it comes to a
complete stop.
2.How The 914H Band Saw Operates
Warnings for Sawing Systems
31. Always wear leather gloves when handling
saw blades. The operator should not wear
gloves when operating the machine.
32. All doors should be closed, all panels
replaced and other safety guards should be
in place prior to the machine being started or
operated.
33. Be sure the blade is not in contact with the
work piece when the motor is started. The
motor should be started and you should allow
the saw to come up to full speed before
bringing the saw blade into contact with the
work piece.
34. Do not allow the saw blade to rest against the
work piece when the saw is not running.
35. Keep your hands away from the blade area.
36. The saw must be stopped and the electrical
supply must be cut off before any blade
replacement or adjustment of blade support
mechanism is done, or before any attempt is
made to change the drive belts or before any
periodic service or maintenance is performed
on the saw.
37. Remove loose items and unnecessary work
pieces from the area before starting the
machine.
38. Bring the adjustable saw guides and guards
as close as possible to the work piece.
39. The work piece, or part being sawed, must
be securely clamped before the saw blade
enters the work piece.
40. Remove cut off pieces carefully, keeping
hands away from the saw blade.
41. The saw must be stopped and the electrical
supply cut off or machine unplugged before
reaching into the cutting area.
- - SAVE THESE INSTRUCTIONS - -
Figure 1: How the914H Band Saw Operates
3.Specifications
Model
Blade Speeds (FPM)
Height Capacity
(max./in.)
Throat Capacity
(max./in.)
Table Size (in.)
Table Height (in.)
Blade Wheel Diameter
(in.)
Blade Length
(approx./in.)
Blade Width (in.)
Floor Space Required
(in.)
Motor
Net Weight (lbs.)
914H
70, 140, 280, 580
14-1/2
8-1/2
18-1/2 x 30-1/2
30
14
120
1/8 min. – 1 max.
40L x 30-1/2W x 63H
1HP,1Ph,
551
3-2.Standard Features
• Welded frame and base of heavy gauge steel
• Swivel vise with scale for miter cuts
• Heavy duty precision ground cast iron
table
• Four blade speeds (70, 140, 280, 580)
• Hydraulic feed control
• Counterweight for feed control
• Upper guide bar adjustment
•
3-3.Standard Equipment
• Four foot pads
• Work light
• Chip tray
• Miter gauge
• Extension roller
• 5/8” Bi-metal blade
• Blade speed and pitch selector
• Conveniently located control panel
Guide rollers accept blade sizes: 1/8”, 1/4”,
3/8”, 1/2”, 5/8”, 3/4” and 1”
4.Description
3
4
5
6
6
7
1
9
1.2
2
7.2
1.1
7.3
1.3
7.1
Control Plane
Stop Clamp
Figure 3: Component Descriptions and Locations
3
1. CONTROL PANEL – The operating controls for
the band saw are located on the base at the front
of the machine.
1.1. ON/OFF SWITCH – Turns the machine on
or off.
1.2. SAW FRAME RELEASE KNOB – Turning
this knob counterclockwise unlocks the
release lever (Item 2).
1.3. FEED RATE ADJUST KNOB – Used to
adjust the hydraulic feed control rate.
2. SAW FRAME RELEASE LEVER – Pull up on this
lever to release the saw frame after unlocking it
(Ref Item 1.2) and push down to return the saw
frame to its return position.
3. BLADE TENSION HANDLE – Used to set the
correct blade tension. Also used to remove and
install the saw blade.
4. UPPER BLADE WHEEL BLADE TRACKING
ADJUSTMENT (See Blade Tracking
Adjustments) – If your saw should get out of
adjustment and the blade runs off the wheel or
runs back against the lip, loosen the two bottom
bolts on the upper wheel slide. Turn the set screw
in or out to make the blade run approximately
1/32” away from the lip on the back of the wheel.
Tighten the two upper wheel slide bolts.
IMPORTANT: If the blade is allowed to run
against the lip on the wheel it will wear the lip off.
5. GUIDE BAR LOCK – Used to lock the
roll guides in position.
6. BLADE GUIDE – Should be adjusted so it clears
your work by approximately 1/2”. This will insure
maximum blade rigidity.
7. STOP CLAMP – Has two uses:
1)It can be set for the depth of cut ;
2)If placed behind the frame, it will lock the
frame in a forward position for contour work.
7-1.Stop Clamp Scale – Shows the maximum
depth of cut based on the size of blade you are
using.
7-2.Stop Clamp – Used with the Stop Clamp
Scale (Figure 3 Item 7.1) to select the size of
the blade.
7-3.Lock Knob – To Lock the Stop Clamp.
8. C-CLAMP VISE – Used to hold stock in place
during cutting. Graduations are
provided to set angle cuts.
8
5.Installation
5-1.General
• Do not install the machine in a damp,
humid, dirty or badly illuminated
environment.
5-2.Machine Setup
The band saw has been pre-adjusted at the
factory and several test pieces have been cut to
verify cutting accuracy. Setup of the machine is
limited to uncrating the machine, securing it to
the shop floor and connecting it to the electrical
power source.
1.Remove the saw from the shipping skid;
discard any hold-down devices.
2.Place the saw on the shop floor. This
machine must be installed on a firm, level
surface. Make sure it is mounted securely
to the floor using mounting anchors
secured through the holes in the base. In
addition, adjust the level of the worktable
by adjusting the foot pads.
3.If the saw will be used to cut long pieces of
stock, allow plenty of room
for the length of the stock.
5-3.Electrical Connections
A qualified electrician should
make the electrical connections following all local and
state codes.
The
electrical power that
serious injury or death
observed.
p
r
grounded.
machine uses high voltage
poses a significant risk of
if proper precautions are not
Make sure the machine is
o
p
e
r
l
y
Connect the machine to the electrical power branch
circuit. Observe the following guidelines when
c o n n e c t i n g t h e s a w t o t h e
power source.
9. HYDRAULIC CYLINDER – This should be
adjusted to allow the frame to travel rapidly but
not free fall. This is a safety device and should be
kept properly adjusted.
1.Make sure the saw is disconnected from the
electrical power branch circuit (trip the required
circuit breakers or remove the required fuses).
2.Place a warning placard or tag on the
service panel to prevent accidental
electrical shock.
3.When installing the motor power cord into
a receptacle, make sure the plug is
compatible with the receptacle.
Figure 4:
4.When using hard-wired connections,
connect the wires as shown in the wiring
diagram.
5.Install the fuses or reset the breakers.
6.Check the operation of the saw.
For circuits that are a long distance from the electrical
service box, the wire size must be increased in order
to deliver ample voltage to the motor. To minimize
power losses and to prevent motor overheating and
burnout, the use of wire sizes for branch circuits or
electrical extension cords according to the
following table is recommended.
5-4.Cleaning
●All unpainted surfaces of the machine are treated
with a rust preventative. Clean all rust protected
surfaces with a mild solvent. Do not use paint thinner,
Conductor
Length
0 – 50 Feet
50 – 100 Feet
AWG (American Wire Gauge)
Number
120 Volt Lines
No. 14
No. 12
240 Volt Lines
No. 14
No. 14
Over 100 Feet
No. 8
No. 12
lacquer thinner, gasoline or mineral spirits; these
w i l l d a m a g e
p a i n t e d
surfaces.
hydraulic cylinder feed control valve. It is used to set
the amount of force that is applied to the saw blade.
The feed rate is proportional to the opening of the
valve. Increasing the valve opening
(counterclockwise) increases the feed rate;
decreasing the valve opening (clockwise) reduces
the feed rate.
●Blade Speeds (Figure 5). The band saw has four
blade speeds. The different speeds are obtained by
changing the position of the motor drive V-belt on
step pulleys. Change blade speeds as follows.
Caution: Change speeds only when the machine is
not running.
6-3.Changing blade speeds:
1. Disconnect the electrical power from the band
saw branch circuit to prevent accidental motor
start-up.
2. Place the saw frame in the rearmost position by
pushing down on the saw frame release lever
(Figure 3 Item 2) and lock it by turning the saw
frame release knob (Figure 3 Item 1.2) clockwise.
3. Remove the panel on the base to expose the
V-belt and pulleys.
4. Lift the motor to loosen the belt.
5. Select the speed using the placard on the saw
head. Put the V-belt in the pulley grooves of the
pulley for the desired speed (Refer to Figure 5 for
belt locations and the speeds available).
6. Lower the motor to tighten the V-belt.
6.Operation
6-1.General
●Always wear approved safety glasses when using
this machine. Before operating the machine, remove
tie, rings, watches and other jewelry, and roll sleeves
up past the elbows. Remove all loose clothing and
confine long hair. Non-slip footwear is recommended.
Do not wear gloves when operating the saw.
●Never use the machine if it is missing any guards or
other safety devices.
●Maintain a balanced stance at all times so that you
do not fall or lean against the saw blade or other
moving parts.
●Never leave the machine running. Always make
sure it has come to a complete stop before leaving
the machine.
6-2.Controls
●ON / OFF Switch (Figure 3 Item 1.1). Located on
the right side of the control panel. Press this switch to
start or stop the machine.
●Feed Control Knob (Figure 3 Item 1.3). Located on
the left side of the control panel. The knob is the
Figure 5: Belt Speed/Position
Relationship
7.Blade Selection
The band saw is delivered with a saw blade that is
adequate for a variety of jobs on a variety of common
materials. Refer to Figure 5 for the speeds
recommended for various materials. These speeds,
while appropriate for many common cutting needs,
do not encompass the wide variety of special blade
configurations (tooth pitch and set) and special alloys
for cutting unusual or exotic
materials.
A coarse blade could be used for a solid steel bar, but
a finer tooth blade would be used on a thin-wall steel
tube. In general, the blade choice is determined by
the thickness of the material; the thinner the materials;
the finer
the tooth pitch.
A minimum of three teeth should be on the
work piece at all times for proper cutting. The blade
and work piece can be damaged if the teeth are so
far apart that they straddle the
work piece.
For very high production cutting of special materials,
or to hard-to-cut materials such as stainless steel,
tool steel or titanium, you can ask your industrial
distributor for more specific blade recommendations.
The supplier that provides the work piece material
should be able to provide you with very specific
instructions regarding the best blade (and coolant or
cutting fluid, if needed) for the
material or shape supplied.
7-1.Blade Removal and Installation
Use
leather
gloves
when
changing the saw blade to protect
your hands from cuts and
scratches. Use protective eye wear that meets
ANSI SPECIFICATION Z87.1.
Disconnect the band saw from its electrical
power source.
1.To remove the blade, place the saw frame in
the rearmost position by pushing down on the saw
frame release lever (Figure 3 Item 2) and lock it by
turning the saw frame release knob (Figure 3 Item
1.2) clockwise.
2.Remove the panel on the base to expose the
lower blade wheel.
3.Open the panel on the saw head to expose
the upper blade wheel.
4.Remove the blade safety guard.
5.Turn the blade tension handle (Figure 3
Item 3) counterclockwise until the blade
hangs loose.
6.Use leather gloves to prevent cuts and
scratches. Pull the blade off the drive wheels and
out of the blade guides. Store the removed blade
carefully before
proceeding.
7.To install the blade, slide the new blade into
the blade guides.
8.Place the blade over the bottom wheel.
9.Place the blade over the top wheel. The
teeth must point down toward the table.
10. Push the blade so it is seated against the
shoulders of the wheels.
11.Turn the blade tension handle clockwise
enough to hold the blade firmly in place.
12.Reconnect the saw to its electrical power
source.
13.Turn the machine on to allow the blade to position
itself. Check and adjust the tracking of the blade.
Refer to Blade Tracking Adjustments in this
manual.
14.Turn the blade tension handle clockwise to
finish tightening the blade. Do not over-tighten the
blade; tighten it just enough so it does not slip
while cutting.
15.Install the wheel guards and blade covers.
The most common causes of your band saw
not cutting straight are:
1.Blade tension is set to low.
2.The blade is either dull or worn on one side.
3.The blade is upside down. The teeth must
point down toward the table.
7-2.Blade Break-In Procedures
New blades are very sharp and, therefore, have a
tooth geometry that is easily damaged if a careful
break-in procedure is not followed. Consult the blade
manufacturer’s literature for break-in of specific
blades on specific materials. However, the following
procedure will be adequate for break-in of
JET-supplied blades on lower alloy ferrous materials.
1.Clamp a section of round stock in the vise.
The stock should be two inches or larger in
diameter.
2.Operate the saw at low speed. Start the cut
with a very light feed rate.
3.When the saw has completed about 1/3 of
the cut, increase the feed rate slightly and allow
the saw to complete the cut.
4.Keep the feed rate at the same setting and
begin a second cut on the same or similar
work piece.
5.When the saw has completed about 1/3 of
the cut, increase the feed rate while watching the
chip formation until cutting is at its most efficient
rate (refer to Evaluating Cutting Efficiency in this
manual). Allow the saw to complete the
cut.
6.The blade is now considered ready for use.
8.Controlling the Cut
8-1.Hydraulic Feed Control
The weight of the saw frame provides the force
needed to cut through the work piece. The saw has a
hydraulic cylinder that controls
the feed rate.
9.Work Setup
The hydraulic feed control circuit consists of a
single-acting hydraulic cylinder and a flow-control
valve. The feed control cylinder resists motion in the
forward direction to control the feed rate. The control
cylinder offers no resistance when the saw frame is
moved backward. A knob on the control panel
controls the rate at which the saw frame moves
forward. The control knob (needle valve) controls the
rate at which the hydraulic fluid is released from the
hydraulic cylinder. When the needle valve is closed,
the cylinder is locked. With the needle valve slightly
open, the cylinder permits slow, or light, force.
Opening the needle valve further increases the feed
rate and applies more force to the
saw blade and the work piece.
1.Move the saw frame to its rearmost position
by pushing down on the saw frame release lever
(Figure 3 Item 2) and lock it in place by turning the
saw frame release knob
(Figure 3 Item 1.2) clockwise.
2.Turn the c-clamp handle counterclockwise
enough to fit the stock.
3.Place the work piece on the worktable. For long
work pieces, provide support at the other end. If
necessary, provide additional downward clamping
to hold the work piece
securely on the worktable.
4.Clamp the work piece in the vise by rotating
the c-clamp handle clockwise.
The needle valve is adjusted until the saw is
operating efficiently. The efficiency of operation is
usually evaluated by observing chip formation. (Refer
to Evaluating Cutting Efficiency for more information
on cutting
efficiency.
Do not allow the blade to rest against the work piece
when the saw is not cutting.
9-1.Setting the Blade Guide Bracket
The band saw has an adjustable blade guide bracket.
The blade guide bracket allows you to set the blade
guide for varying heights of
work pieces.
8-2.Evaluating Cutting Efficiency
Is the blade cutting efficiently? The best way to
determine this is to observe the chips
formed by the cutting blade.
●If the chip formation is powdery, then the
feed is much to light, or the blade is dull.
To make accurate cuts and prolong blade life, the
blade guide bracket should be set one inch above the
piece to be cut. Adjust the bar
position as follows:
●If the chips formed are curled, but
colored – blue or straw colored from heat
generated during the cut – then the feed
rate is to high.
●If the chips are slightly curled and are not
colored by heat – the blade is sufficiently sharp
and is cutting at its most efficient
rate.
8-3.Setting the Vise for Angle Cuts
The vise can be adjusted through a 45o arc.
Adjust as follows:
1.Loosen the hex head bolt and remove the
taper pin on the vise.
2.Rotate the vise to the desired angle. For accurate
cuts, use a variable protractor to set the position of
the jaw; align one side of the protractor with one
side of the blade.
3.Tighten the screw on the vise.
8-4.Setting the Vise for Square Cuts
The procedure for setting the vise for square cuts is
identical to setting for angle cuts (see Setting the Vise
for Angle Cuts) except that a machinist’s square is
used to position the vise (Re-install the taper pin and
tighten the hex
head bolt on the vise).
1.Place the work piece in the vise and clamp
tightly.
2.Loosen the locking knob on the back of the
guide bracket (Figure 3 Item 5).
3.Slide the guide bracket to the desired position.
4.Tighten the locking knob to secure the
guide bracket.
9-2.Starting the Saw
Never operate the saw without the blade
covers in place.
7
Make sure the blade is not in contact with the work
piece when the motor is started. Do not
force the saw through the work piece.
1.Make sure that the saw frame is in the
rearmost position and turn the saw frame release
knob (Figure 3 Item 1.2) to the
OFF (clockwise) position.
2.Clamp the work piece in the vise. (Refer to Figure 6
for examples of how different shaped work pieces
are clamped in the
vise).
3.Be sure that the blade is not in contact with
the work piece when the motor is started.
4.Start the motor and allow the saw to come
up to speed.
5.Turn the feed rate knob clockwise all the
way. This closes the hydraulic valve and
stops the feed rate.
6.Turn the saw frame release knob
counterclockwise to the ON position.
7.Pull up on the saw frame release lever
(Figure 3 Item 2) to release the saw frame.
8.Slowly let the saw feed into the work piece by
turning the feed rate control knob (Figure 3 Item 1.3)
counterclockwise until the proper feed rate is
reached (See Evaluating Cutting Efficiency).
9.Do not force the cut. Let the weight of the
saw provide the cutting force.
10.At the end of the cut, push down on the
saw frame release lever to move the saw frame
back to the rearmost position and turn the saw
frame release knob clockwise
to lock it.
A
B
Figure 7: Blade Tracking Adjustment
Figure 6: Placing Work Pieces in the Vise
10.Service and Maintenance
10-1.Adjustments
The efficient operation of the band saw is dependent
upon the condition of the saw blade. If the
performance of the saw begins to deteriorate, the first
item that you should
check is the blade.
If a new blade does not restore the machine’s cutting
accuracy and quality, refer to the troubleshooting
guide (or the blade manufacturer’s guide) for
conditions to consider and adjustments that can be
made to
increase the life of the blade.
To change the blade, refer to the blade changing
procedures in the Blade Selection
section of this manual.
10-2.Blade Tracking Adjustments
Blade tracking has been tested at the factory.
Adjustment is rarely required when the blade is used
properly and if the blade is correctly welded. (Refer to
Figure 7 for location of
blade tracking adjustment setscrew).
1.Place the saw frame in its rearmost position
by pushing down on the saw frame release lever
(Figure 3 Item 2) and lock it in place by turning the
saw frame release knob
(Figure 3 Item 1.2) clockwise.
2.Make sure the blade is properly tensioned.
NOTE: Keep proper tension on the blade at all
times using the blade tension adjustment.
3.Loosen the two bottom bolts (Figure 7,
Item B) on the wheel slide.
8
While performing the following steps, keep the blade
from rubbing excessively on the shoulder of the
wheel. Excessive rubbing will
damage the wheel and/or the blade.
4.Start the saw. Turn the setscrew to tilt the
idler wheel until the blade is touching the
shoulder of the idler wheel.
5.Turn the setscrew (Figure 7, Item A) so the
blade starts to move away from the shoulder of the
wheel; then immediately turn the setscrew in the
other direction so the blade stops; then moves
slowly towards
the shoulder.
Check the blade to make sure the welded section is
the same thickness as the rest of the blade. If the
blade is thicker at the weld, the guide bearings may
be damaged.
If required, adjust the guide bearings as follows:
Keep your fingers clear of the blade and
wheel to avoid injury.
6.Turn the setscrew to stop the motion of the
blade on the wheel as it gets closer to the wheel
shoulder. Put a six-inch length of paper between
the blade and the wheel. The paper should not be
cut as it passes between the wheel shoulder and
the blade.
7. Turn the setscrew a small amount. Repeat the
insertion of the paper between the wheel shoulder
and the blade until the paper is cut in two pieces.
NOTE: You may have to repeat the check with the
paper several times before the blade and the
shoulder cut the paper into two pieces. Do not
hurry the adjustment. Patience and accuracy here
will pay off with better, more accurate, quieter
cutting and much longer machine and blade life.
1.The upper and lower blade guides are adjusted the
same way.
2.Loosen the blade guide setscrews with an Allen
wrench.
3.Position the bearing by turning the eccentric shafts.
Set the clearance to approximately 0.001”. (See
Figure 8).
4.Tighten the blade guide setscrews with the Allen
wrench.
5.Use the same procedure to adjust the other blade
guide bearing.
6.When the adjustment is correct, the guide bearings
should rotate freely with slight pressure of the finger
(blade stopped).
Figure 8
8.When the paper is cut, turn the setscrew slightly in
the counterclockwise direction. This assures that
the blade is not touching the shoulder of the wheel.
Setscrew
9.Shut off the saw.
10.Tighten the two bottom bolts on the upper wheel
slide(Figure 6, Item B).
10-3.Blade Guide Bearing Adjustment
Proper adjustment of the blade guide bearings is
critical to efficient operation of the band saw. The
blade guide bearings are adjusted at the factory.
They should rarely require adjustment. When
adjustment is required, readjust immediately. Failure
to maintain proper blade adjustment may cause
serious blade damage or inaccurate cuts.
It is always better to try a new blade when cutting
performance is poor. If performance remains poor
after changing the blade, make
the necessary adjustments.
If a new blade does not correct the problem, check
the blade guides for proper spacing. For most
efficient operation and maximum accuracy, provide
0.001” clearance between the blade and the guide
bearings. The bearings will still turn freely with this
clearance. If the clearance is incorrect, the
blade may track off the drive wheel.
Disconnect the band saw from its electrical power
source.
Eccentric
Shaft
Figure 8: Guide Bearing Adjustment
10-4.Cleaning
1.Clean off any oil and grease on the machine
surfaces.
2.After cleaning, coat the machined surfaces of the
band saw with medium consistency machine oil.
Reapply the oil coating at least every six months.
3.Clean up accumulated saw cuttings after use. Make
sure the lead screw and the rapid nut are kept free
from saw cuttings and other material that would
cause damage.
10-5.Lubrication
Lubricate the following components at the
recommended intervals using the lubricants
specified:
1.Ball bearings: the bearings are lubricated and
sealed – periodic lubrication is not required.
2.Blade guide bearing: the bearings are lubricated
and sealed – periodic lubrication is not required.
3.Upper wheel bushing: six to eight drops of oil each
week.
4.Pivot points, shafts and bearing areas: six to eight
drops of oil each week.
10-6.Changing the Drive Motor V-Belt
Disconnect the band saw from its electrical
power source.
1.Move the saw frame to its rearmost position and by
pushing down on the saw frame release lever
(Figure 3 Item 2) and lock it in place by turning the
saw frame release knob (Figure 3 Item 1.2)
clockwise.
2.Remove the panel on the base to expose the
belt and pulleys.
3.Pivot the motor upwards to loosen the belt.
4.Remove the worn belt.
5.Put the replacement belt in the pulley position for
the speed you require. (Refer to Figure 5 for belt
locations and the speeds available).
6.Tighten the belt by pivoting the motor downward.
7.Replace the panel and unlock the saw frame.
10-7.Chip Brush and Chip Scraper Replacement
Chip Brush
saw. With extended use, this brush and/or scraper
will become worn and will require replacement.
Disconnect the band saw from its electrical
power source.
1.Remove the two screws and washers
holding the brush or scraper on.
2.Remove the worn brush or scraper.
3.Install the replacement brush or scraper.
4.Install the two screws and washers.
5.Adjust the brackets, if necessary, so that the brush
makes slight contact with the lower blade wheel
and the scraper is as close as possible to the saw
blade without touching it.
10-8.Blade Guide Bearing Replacement
Disconnect the band saw from its electrical power
source.
1.Remove the saw blade. (Refer to Blade
Removal and Installation).
2.Remove the bearing locking screw
3.Remove the damaged bearing and bushing.
4.Separate the damaged bearing from the bushing.
5.Install the replacement bearing on the bushing.
6.Install the bearing locking screw.
7.Install the saw blade. (Refer to Blade Removal and
Installation).
8.Adjust the bearing clearance. (Refer to Blade Guide
Bearing Adjustment).
10-9.Drive Motor Replacement
Lower Blade wheel
Disconnect the band saw from its electrical power
source.
Chip Scraper
Figure 9: Chip Brush and Chip Scraper Locations
The purpose of the chip brush and chip scraper is to
remove chips from the saw teeth, the saw blade and
the lower blade wheel so an excessive amount of
chips doesn’t get into the wheel guard section of the
1.Remove the drive motor V-belt. (Refer to Changing
the Drive Motor V-Belt).
2.Loosen the setscrew that holds the motor pulley to
the shaft and remove the pulley.
3.Open the motor junction box and disconnect the
power cord wires from their terminals.
4.Remove the nuts, washers and bolts that secure
the motor to the mounting plate.
5.Installation of the motor is the reverse of the above
steps. (Refer to Changing the Drive Motor V-Belt
and the electrical schematics at the end of this
manual).
10-10.Adjusting or Replacing the
Counterbalance
The counterbalance is located on the base of the saw.
It is used to adjust the amount of force the saw puts
on the work piece when the
hydraulic control cylinder is open.
3.Remove the wheel and the bronze bearing.
4.Examine the drive edge and shoulder of the
wheel for damage. Replace the wheel if it’s
damaged.
5.Install the bearing and the wheel.
Disconnect the band saw from its electrical
power source.
1.Lock the saw frame in its rearmost position by
pushing down on the saw frame release lever (Figure
3 Item 2) and lock it in place by turning the saw frame
release knob (Figure 3 Item 1.2) clockwise.
2. Turn the handle on the counterweight
counterclockwise to loosen it (Figure 3 Item 9).
6.Install the retaining ring and shim on the
shaft.
7.Install the saw blade. (Refer to Blade
Removal and Installation).
11.Transportation of machine
As this machine weights, 551 lbs, it is recommended
that machine be transported
with help of lifting jack. (Figure 10)
3.Slide the counterweight along the bar to the proper
location.
4.Turn the handle on the counterweight clockwise to
tighten it (Figure 3 Item 9).
10-11.Replacing the Drive Wheel (Lower Wheel)
Disconnect the band saw from its electrical power
source.
1.Remove the saw blade. (Refer to Blade
Removal and Installation).
2.Loosen the setscrew in the wheel hub.
3.Pull the wheel from the speed reducer shaft.
Figure 10: Picture of lifting machine
Please use fixed plate (1) for long distance
transportation use 4pcs of screw (2) to set up the
fixed plate. (Figure 11)
Take off the fixed plate after settle down the machine.
And keep the fixed plate well for next transportation.
4.Examine the drive edge and shoulder of the
wheel for damage. Replace the wheel if it’s
damaged.
1
5.Install the wheel.
6.Tighten the setscrew in the wheel hub.
7.Install the saw blade. (Refer to Blade
Removal and Installation).
2
10-12.Replacing the Idler Wheel or Bearings
(Upper Wheel)
Figure 11: Picture of setting up the Fixed Plate
Disconnect the band saw from its electrical
power source.
1.Remove the saw blade. (Refer to Blade
Removal and Installation).
2.Remove the retaining ring and shim from
the shaft.
Please take off the collect chip plate before moving
machine with lifting jack to prevent any damage.
(Figure 12)
Collect
Chip
Plate
Figure 12: Picture of take off the Collect Chip Plate
14.Troubleshooting
Symptom
Possible Cause(s)
Corrective Action
1. Materials loosen in vise.
2. Incorrect speed or feed
3.Blade teeth spacing too large
1. Material too coarse
5. Incorrect blade tension
6.Teeth in contact with material before
saw is started
7. Blade rubs on wheel flange
8. Miss-aligned guide bearings
9. Blade too thick
10 Cracking at weld
1. Teeth too coarse
2. Too much speed
3. Inadequate feed pressure
4.Hard spots or scale on material
5. Work hardening of material.
6.Blade twist
7. Insufficient blade
8. Blade slide
1. Blade guides worn.
2. Blade guide bearings not adjust
properly
3. Blade guide bearing bracket is loose
1. Tooth too coarse for work
2. Too heavy pressure; too slow speed.
3. Vibrating work-piece.
4. Gullets loading
1. Clamp work securely
2. Adjust speed or feed
3. Replace with a small teeth spacing blade
4. Use a blade of slow speed and small teeth spacing
5. Adjust to where blade just does not slip on wheel
6. Place blade in contact with work after motor is
started
7. Adjust wheel alignment
8. Adjust guide bearings
9. Use thinner blade
10. Weld again, note the weld skill.
1. Use finer teeth
2. Decrease speed
3. Decrease spring tension on side of saw
4. Reduce speed, increase feed pressure
5. Increase feed pressure by reducing spring tension
6. Replace with a new blade, and adjust blade tension
7. Tighten blade tension adjustable knob
8. Tighten blade tension
1. Replace.
2. Adjust as per operators manual
3. Tighten.
1. Blade tension too high.
2. Drive belt tension too high.
Motor running too hot 3. Blade is too coarse for work
4. Blade is too fine for work
5. Gears aligned improperly
6. Gears need lubrication
7. Cut is binding blade
1. Feed pressure too great.
2. Guide bearings not adjusted properly
3. Inadequate blade tension.
Bad Cuts (Crooked) 4. Dull blade.
5. Speed incorrect.
6. Blade guides spaced out too much
7. Blade guide assembly loose
8. Blade truck too far away from wheel
flanges
1. Reduce tension on blade.
2. Reduce tension on drive belt.
3. Use finer blade.
4. Use coarse blade.
5. Adjust gears so that worm is in center of gear.
6. Check oil path.
7. Decrease reed anti speed
1. Reduce pressure by increasing spring tension on
side of saw
2. Adjust guide bearing, the clearance can not greater
than 0.001.
3. Increase blade tension by adjust blade tension
4. Replace blade
5. Adjust speed
6. Adjust guides space.
7. Tighten
8. Re-track blade according to operating instructions.
1. Decrease speed or feed.
2. Replace with finer blade.
3. Adjust blade tension.
1. Decrease reed pressure.
2. Decrease blade tension.
Excessive
Blade Breakage
Premature
Blade Dulling
Unusual Wear on
Side/Back of Blade
Teeth Ripping from
Blade.
Bad Cuts (Rough)
Blade is twisting
1. Too much speed or feed
2. Blade is too coarse
3. Blade tension loose
1. Cut is binding blade.
2. Too much blade tension.
1. Use finer tooth blade.
2. Decrease pressure, increase speed
3. Clamp work piece securely
4. Use coarser tooth blade or brush to remove chips.
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