#84630
R8 Mill Instruction Manual
Please read and understand all instructions before using this tool.
Note: These instructions will show you how to assemble this machine,
work its controls and maintain it for long life.
It is not intended as an educational course on how to make parts using a mill.
Made in China for
340 Snyder Avenue
Berkeley Heights, NJ 07922
For technical assistance, call 908-464-1094 Monday thru Friday, 1 pm to 5 pm ET
©Micro-Mark
MM041504
CONTENTS
CHAPTER 1 • SPECIFICATION
1-1 Machine specifications
1-2 Packing list of accessories
CHAPTER 2 • MACHINE INSTALLATION
2-1 Fundamental locating of the machine
2-2 Preparation before operation
2-3 Starting and running the machine
2-4 Machine overload
CHAPTER 3 • MAINTENANCE
3-1 Preventative and maintenance
3-2 Maintenance of cutter and taper shank
3-3 Mechanics lubrication
CHAPTER 4 • MACHINE STRUCTURE
4-1 External features
4-2 Assembly and parts
CHAPTER 5 • MECHANISM ADJUSTMENT
5-1 Installation and removal of taper shank
5-2 Travel adjustment
5-3 Adjust tip angle of headstock
CHAPTER 6 • OPERATION AND NOTICE FOR USE
6-1 Method of operation
6-2 Operation notes
CHAPTER 7 • POWER CONNECTION & ELECTRICITY
7-1 Power connection/disconnection & Operation
7-2 Electrical circuit diagram
WARNING!
Some dust created by power sanding, sawing, grinding, drilling and other construction activities can contain
chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
Lead from lead-based paints,
Crystalline silica from bricks and cement and other masonry product, and
Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures vary, 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 dust masks
that are specially designed to filter out microscopic particles.
2
SAFETY INSTRUCTIONS
This machine is electrically powered.
To avoid electric shock:
For machine longevity:
• Make sure all moving parts are lubricated with
machine oil or grease.
• Make sure the drive belt tension is tight enough to
avoid slipping under heavy load, but not so tight as
to overload the motor and spindle bearings.
• Keep the machine clean.
• Do not use it in or near water.
• Make sure electrical plug is securely plugged into
wall outlet.
• Make sure plug grounding pin is in place and socket
is properly grounded.
For personal safety:
Use common sense:
• Avoid loose-fitting clothing that can catch in the
machine's rotating parts.
• Remove chuck keys and wrenches before turning on
the machine.
• Make sure all tooling is securely attached to the
machine and rotates properly.
• Make sure all workpieces are securely clamped to
the table and/or tightly held in a vise which, in turn,
is properly mounted.
• Make sure the machine is bolted securely to your
workbench.
• Do not use the machine for other than its intended
purpose.
• Do not use the machine to do jobs that it was not
designed to do.
• Do not use the machine to do work in excess of
its rated capacity.
Be careful!
Make sure you unplug the machine before changing chucks, collets,
cutters or any other tooling, or before performing any maintenance work.
After changing any tooling, rotate the spindle by hand to make sure everything
is mounted correctly and nothing can fly off the machine when it is powered up.
AND, MOST IMPORTANTLY, ALWAYS WEAR SAFETY GLASSES
The electrical power/safety system is protected by a large red switch located on the right side
of the control box. To unlock the safety shut-off switch, slide the big red cap toward the front
of the machine to undo the latch. Then swing open the door a bit. If the speed control is all the
way counterclockwise (in the clicked-off position), the green panel light will light, indicating
you are ready to turn up the speed.
T-Slot Specification (mm)
3
SOME SAFETY FEATURES OF THIS MACHINE
a) Purpose of this machine:
This machine is designed for drilling, deep milling and face milling of small work pieces up to 300mm x 200mm
x 200mm (about 12” x 11” x 11”).
b) Before operating this machine:
- Read these instructions completely.
- Obtain some professional training on drilling and milling work.
- Familiarize yourself with the design limits of this machine.
- Take every safety precaution possible
c) Some important safety information:
- The noise level during operation is 70 to 75dB(A).
- The temperature range suitable for the operation & storage of this machine is -20 to +40 degrees C.
d) Special Warnings for this machine:
- If a power outage causes an interruption in machine operation, be sure to avoid accidental
start-up by closing the emergency button and rotating RPM dial to OFF until line power is restored.
- Always wear approved eye protection during operation.
e) Correct handling of this machine:
- The net weight of this machine is about 110 pounds (50 Kg). This machine would best be handled
with the help of an appropriate lifting device.
- If the operator has to handle this machine without a lifting tool, be sure you can lift this
weight comfortably without personal injury.
CHAPTER 1 • SPECIFICATIONS
This is a mini vertical milling machine having multiple functions of either face milling or drilling. Many sizes and kinds of
cutters are available. Be sure to purchase the correct cutter for the intended job.
1.1 Machine Specifications
Max. table travel
Max. cross slide
Max. spindle travel
Headstock tip angle
Max. power
Spindle speed
Taper of hole in spindle
Drilling capacity
End milling capacity
Face milling capacity
Machine weight
Shipping dimension
8.5”
4”
7”
–45˚ to +45˚
500 watts
0–2500 rpm
R8
1/2”
1/2”
1”
GW: 58kg NW: 50 Kg (110 lbs.)
560mm x 500mm x 740mm (L x W x H)
4
1.2 Packing list of Accessories
1. Large wrench S:36
1
2. 1/2” Drill chuck & R8 shank
1
3. Oil can
1
4. Fixing pin
1
5. L hex wrench S:3,4,5,6
4
6. Spanner wrench D:45-52
1
7. Double end wrench 8-10,14-17, 17-19
3
8. Drill chuck holder
1
9. Handle
2
10. T-nut
2
11. Fuse 5A
1
12. Drawbar
1
CHAPTER 2 • MACHINE INSTALLATION
2.1 Fundamental Machine Location
The machine should be bolted to a workbench to prevent it from sliding about
and to maintain precise operation.
Selecting a Good Location
(1) The workbench should have a flat surface.
(2) Avoid a location with direct sunshine, heavy moisture or dust.
Mounting Instructions
(1) Drill 4 locating holes through the workbench to match the holes in the
machine’s base. (Be sure to provide adequate clearance for the movement
of the Y-axis handwheel.)
(2) Use metal shims to level the machine and attach to the workbench with appropriate
size bolts, washers and nuts.
2.2 Check the Following Before Switching on the Machine
To avoid personal injury, please assure the following:
1.
Remove all tools used to mount the machine to your workbench.
2.
Check that the line power matches the machine requirements (see label on front of machine).
3.
Remove all stray objects in the vicinity of the machine.
4.
Remove anti-rust coatings.
5.
Check the tip angle of the column and tighten the column bolt.
6.
Make sure chuck, R8 shank and drawbar are mounted correctly and spin freely.
7.
Set speed (RPM) knob to OFF (fully counter-clockwise).
8.
Check operation of handwheels and feed screws for proper operation.
9.
During the test run, look for any faulty operation and make reparations before continuing with the
machine’s use.
5
2.3 Starting and Running the Machine
Plug your machine to line power, taking all precautions previously stated and insuring that the speed control knob is
full counter-clockwise, setting it to OFF (you will NOT hear an audible click). You may now unlock the Emergency Off
Button by pressing in the safety lock on the left side of the switch and then lifting up.
You will find a green (ON) button and a red (OFF) button. Press the green button to activate/power the panel. The
green light will illuminate.
If all is still clear, slowly rotate the knob (clockwise) to begin the rotation of the spindle drive system.
CAUTION:
Always turn the speed control to the OFF position before starting the mill. Starting the mill
with the speed control set to a higher speed can damage the speed control circuit board.
Run the machine for a total of 5 minutes, and during this time, gradually increase the spindle speed to its maximum.
Continue to run the machine at this speed for at least 2 minutes, then shut it off. Disconnect the plug from the wall
outlet. Check that all components are still secure and working freely and correctly. Also check to ensure the
mountings are secure.
2.4 Machine Overload:
If you exceed the machine’s capability, it is possible for the machine to shut down and go into overload during
a milling/drilling operation. Should this happen, the yellow fault light will illuminate. If your mill is equipped with the
optional digital readout, it will display “ERR.”
IMPORTANT! First, rotate the RPM knob to OFF (counter-clockwise). You will now notice that the yellow overload
light has gone out. While it is possible to start spinning again simply by rotating the RPM knob, at this point we
advise you to push down on the emergency stop button and investigate the cause of the overload. Once you have
cleared the situation, then, and only then, should you begin the startup sequence in this section.
CHAPTER 3 • MAINTENANCE
3.1 Preventative Maintenance
3.1-1 Daily Maintenance
(1) Inspect each operating part to ensure sufficient lubrication.
(2) Check for loose or broken parts.
(3) Remove stray obstacles from around the machine in order to prevent machine damage
and assure the safety of the operator.
(4) Clean the machine clean after use and lubricate the moving parts to prevent rust.
(5) Watch for unusual operation; stop and repair immediately.
3.1-2 Seasonal Maintenance
(1) Use clean cotton cloth or soft gauze to clean each part of the machine.
(2) Confirm smooth motion of headstock and table.
(3) Check for proper spindle operation.
(4) Check for loose bolts and fasteners.
(5) Check for proper wiring connections.
6
3.1-3 Repairs and Maintenance
(1) Keep a record of all machine repairs.
(2) Do not perform any repairs while the machine is running.
(3) Inspect the machine regularly for proper operation; perform all repairs immediately.
(4) If you’re unsure about your ability to make repairs, contact your dealer’s service department
for assistance.
3.2 Maintenance of Accessories
3.2-1 Maintenance of Cutter
(1) While installing a cutting tool, place a rag under it to avoid damaging the cutter or the table if
the cutter accidentally falls.
(2) Store cutting tools in wood or plastic box to avoid damaging the cutting edges.
(3) Verify spindle is turning in the proper direction – if viewed from below, the chuck should spin
counter-clockwise; otherwise, proper cutting action will be defeated. If unsure about direction
of rotation, use slow speed or watch carefully as machine comes to a stop.
(4) Before starting machine, move the workpiece near the cutter, then start machine and move into
position needed for milling.
(5) Keep cutting tools sharp. Dull cutters are hard on the machine, on the work piece, and destroy precision.
3.2-2 Tips for Using Accessories
(1) Keep shanks clean.
(2) Keep pairs of cutters and holders together whenever possible to increase operating confidence in
subsequent use.
(3) Use the wrenches supplied with the machine to tighten the drawbars and chucks to avoid damage that
can be caused by inappropriate tools.
(4) Use wrenches to tighten bolts. Never use pliers or hammers on machine tools.
3.3 Lubrication
Be sure to keep all working parts properly lubricated:
USE LUBRICATING GREASE
(1) X-Axis feed screw (saddle seat).
(2) Y-Axis feed screw (work table).
(3) Z-Axis feed gear rack (headstock).
USE LUBRICATING OIL
(1) Base and saddle seat sliding faces.
(2) Saddle seat/working table sliding faces.
(3) Column seat and connecting strut sliding faces.
(4) Headstock and spindle box sliding faces.
After use, clean the work table and coat lightly with oil to protect from rust.
7
CHAPTER 4 • MACHINE STRUCTURE
4.1 External Features
4.2 Power Connection/Disconnection
& Operation
See steps 2.3 and 2.4, located on page 6.
8
4.3 Assembly and Parts
9
10
PARTS LIST
Item No. Part Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Screw M8 x 55
Handle
Nut M8
Washer 8
Handle
Y-Axis feeding screw
Key 4 x 16
Graduated collar
Spring
Screw M6 x 12
Y-Axis screw seat
Nut
Base
Screw M6 x 20
Nut M6
Indicator
Screw M6 x 8
Spring
Screw
Handle
Screw M6 x 25
Bolt
Y-Axis wedge
X-Axis wedge
Screw M6 x 25
Saddle
Ruler
Screw for label 2 x 3
Nut
Screw M6 x 10
Guide finger
X-Axis bearing seat
Bearing 8200
X-Axis feeding screw
Working table
End cover
Screw M6 x 10
Screw M6 x 20
Wedge
Key 8 x 12
Shaft
Bracket
Washer 10
Spring washer 10
Screw M10 x 30
Screw M3 x 16
Connect Tray
Ruler
Screw M6 x 12
Gear
Qty.
2
2
6
3
2
1
2
2
2
12
1
1
1
8
13
1
1
3
3
3
1
3
1
1
4
1
1
10
1
2
2
1
2
1
1
1
2
3
1
1
1
1
3
3
3
5
1
1
3
1
Item No. Part Name
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Qty.
Fixed sleeve
Screw M3 x 8
Bracket
Ruler
Shaft
Key 4 x 8
Spring
Ferrule
Spring seat
Screw M5 x 8
Cover
Bearing shank
Washer 12
Cover
Nut M8
Screw
Support
Limit block
Small wedge
Washer
Nut M24
Screw M5 x 6
Tightening ring
Fuselage
Coping
Power line
Electric box
Screw M4 x 8
Plug
B16 Shank
Screw M5 x 10
Oil cover
Bearing 80206
Spindle
Key 6 x 18
Dust cover
Screw M5 x 8
Control box
Screw M4 x 8
Pulley
Fixed sleeve
Nut
M12 Pull shaft
Dust cover
Brushless motor
Key
Pulley
Washer IV
Drive belt
Screw H M6 x 18
11
1
4
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
7
1
1
6
2
2
1
1
1
2
1
3
1
1
1
1
1
1
1
1
1
1
1
Item No. Part Name
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
Connect board for motor
Cover
Spindle box
Screw M6 x 25
Indicator
Spindle box
Wedge
Screw M8 x 80
Bolt
Spring Y II
Small handle
Screw M6 x 10
Worm
Key 4 x 20
Gear
Gear
Support
Pin B4 x 16
Spring
Screw M6 x 8
Steel ball
Handle
Lever cap M8 x 40
Check ring
Handle seat
Screw M5 x 20
Cover
Screw M4 x 6
Sleeve
Pin A3 x 12
Pin B3 x 12
Universal joint
Universal shaft
Screw M5 x 25
Bracket
Graduated collar
Screw M4 x 12
Small handle
Spring
Screw M6 x 35
Screw
PC board
Cover
Filter
Button
Green lamp
Yellow lighting pipe
Cover
Screw
Switch
Qty.
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
1
1
2
1
2
1
1
2
1
1
2
1
1
1
1
1
4
8
1
1
1
1
1
1
1
8
1
CHAPTER 5 • MECHANISM ADJUSTMENT
5.1 Installation and Removal of Taper Shank
Installation
(1) Turn off the main power before you replace
the cutter.
(2) Remove the protective cover (a).
(3) Wipe the spindle sleeve and R8 shank.
(4) Put the shank (g) into spindle sleeve with chuck. Cutter
should be held with a cloth to protect machine and fingers.
(5) Insert fixing pin (d) right on spindle sleeve, or spanner
wrench on notched nut by (b).
(6) Use 14mm open end wrench (c) to tighten (clockwise)
spindle drawbar (b) for holding taper shank.
(7) Pull out the fixing pin, if used.
(8) Install the protective cover (a).
Removal
(1) Turn off the main power before you replace
the cutter.
(2) Pull out the protective cover (a).
(3) Insert fixing pin (d) right on spindle sleeve, or use spanner wrench.
(4) Use 14mm open end wrench (c) to tighten (counter-clockwise) spindle drawbar (b).
(5) Knock the taper shank (g) gently by plastic hammer to loosen it in spindle sleeve.
(6) Cutter should be held with oilcloth to protect machine and fingers
(7) Install the protective cover (a).
*FOR YOUR SAFETY: Any adjustment on machine should be made with power disconnected.
5.2 Travel Adjustment
Use the limit block to control the travel of the headstock.
(1) Loosen the handle (a) on side of the limit block (b).
(2) Adjust the limit block (b) into position.
(3) Tighten the handle.
(4) Use ruler on headstock to measure position.
12
5.3 Adjust Tip Angle of Headstock
(1) Turn off main power before adjusting
(2) Hold the headstock firmly to avoid damaging
the machine or injury to the operator.
(3) Loosen the lock nut (a) with large wrench (b).
(4) Adjust the headstock to the desired tip angle
(45˚ maximum left or right).
(5) Tighten lock nut with large wrench.
5.4 Gib Adjustment
After long or hard use, any “play” noted in the table mechanism or headstock column may be taken up by
adjusting the “gibs” (wedges) located in the slide mechanisms. Periodic checking and adjusting of the gibs
will assure continued machining precision and avoid chatter.
The following items may need adjustment:
Adjustment procedure:
1. Base and saddle seat sliding faces.
1. Loosen the lock nuts.
2. Saddle seat and working table sliding faces.
2. Back off all set screws.
3. Headstock seat and connecting strut sliding faces.
3. Tighten each set screw carefully until gentle
contact is made. Work from the center
screw alternately outward. Assure slides
move smoothly without play and without
binding.
4. Headstock and spindle box slide face.
Note: Leave the spindle box at the highest position
when the machine is idle.
For your safety, any adjustment
on machine should be made
with power disconnected.
4. Tighten the lock nuts uniformly (hold the set
screw with the provided hex key to prevent
unwanted rotation of the screw), and again,
check for smooth, play-free operation.
CHAPTER 6 • OPERATING NOTES
6.1 Method of Operation
Drilling or Deep Milling
1. Follow instructions in section 5 to install cutters. Be sure cutters are held tightly.
2. Select appropriate speed level.
3. Use vise or hold down clamps to attach workpiece to the milling table.
4. Adjust worktable (Longitudinal Axis Y) and Saddle seat (Cross Axis X) in position.
5. Adjust the column limit block to proper position.
6. Put adjusting tools in order and remove all obstacles around the machine.
7. Turn on the main power. Adjust appropriate spindle speed for drilling or deep milling.
8. Refer to the scale on headstock to determine drilling or milling depth.
9. When completing the operation, turn off power and move the spindle to full up position.
10. Clean the machine.
13
Face Milling
1. Follow instructions in section 5 to install cutters. Be sure cutters are held tightly.
2. Select appropriate speed level.
3. Use vise or hold down clamps to attach workpiece to the milling table.
4. Adjust worktable (Longitudinal Axis Y) and Saddle seat (Cross Axis X) in position.
5. Adjust the column limit block to proper position.
6. Arrange all tools in proper place
7. Turn on power. Turn hand wheel of worktable (Y-axis) and saddle seat (X-axis) to do face milling.
8. When completing the operation, turn off power and move the spindle to full up position.
9. Clean the machine.
Drilling or Milling Speed
Before any operation, set the spindle to a correct running speed. The operating speed range is 0 to 2500
rpm. Generally, you can use high speed for soft materials or small holes. Use slow speed for hard materials
or large holes. Use our digital spindle readout if equipped.
6.2 Operation Checklist
Please check the following items as you operate in order to ensure proper operation and safety.
Inspection before start-up
1. Before turning on the power, check that the chuck is sufficiently tightened.
2. Check for loose machine parts.
3. Check the speed adjustment lever for correct position.
4. Check that the workpiece is held securely in the vise or clamp.
5. Clean area and remove any obstacles around the machine.
During operation
1. Do not operate the machine while under the influence of alcoholic beverages.
2. Do not wear gloves or a necktie while operating the machine.
3. Use only appropriate cutting tools.
4. The machine will shake under the following conditions:
a. Excessive depth of cut.
b. Excessive speed of feed.
c. Excessive spindle speed.
d. Loose vise, workpiece clamps or gibs.
e. Machine not sufficiently secured to workbench.
14
CHAPTER 7 • POWER CONNECTIONS & ELECTRICITY
7.1 Power Connection/Disconnection & Operation
(1) The connection, disconnection and grounding is carried out through the plug, equipped on the machine.
For safety reasons, do not change this plug into any other type under any circumstances.
(2) For the protection of control device, we recommend the operator to supply a fuse with a current rating
and the total length between fuse and connection terminal according to the following Extension Lead
Chart.
ExTENSION LEAD CHART
Ampere Rating
3A
6A
10A
13A
Wire Size mm2
Extension Cable Length
7.5m
0.75
0.75
1.0
1.25
15m
0.75
0.75
1.0
1.5
22.5m
0.75
0.75
1.0
1.5
30m
0.75
0.75
1.25
1.5
45.5m
0.75
1.25
1.5
2.5
(3) The exact power source is 120v, single phase, 60Hz.
(4) Make sure the Emergency Stop switch (A) (left on the control box) is in closed position before
plugging in cord.
(5) Disconnect tools from power source with plug before servicing and when changing accessories
such as guard.
A
B
E
F
C
G
D
A. Emergency stop switch
E. Yellow lamp
B. Electric control box
F. Green lamp
C. Digital readout socket
G. Variable speed control knob
D. Fuse holder
15
THE SMALL TOOL SPECIALISTS
340 Snyder Avenue, Berkeley Heights, NJ 07922
Tech Support: 908-464-1094, weekdays, 1pm to 5 pm ET
www.micromark.com [email protected]
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