User Manual
8395907V 2.0
6A ELECTRIC
DIE GRINDER
Please read and understand all instructions before use.
Retain this manual for future reference.
2
For technical questions call: 1-800-665-8685
8395907V 2.0
6A ELECTRIC
DIE GRINDER
SPECIFICATIONS
Collet Size
1/4"
Voltage
120V 60 Hz 6A
No Load Speed
7,000 to 30,000 RPM
Included Wrenches.
1/2"
3/4"
SAFETY
IMPORTANT SAFETY PRECAUTIONS
WARNING! The warnings, cautions and instructions discussed in this instruction manual cannot cover all
possible conditions and situations that may occur. It must be understood by the operator that common sense
and caution are factors which cannot be built into this product, but must be supplied by the operator.
WARNING! Read and understand all instructions before using this tool. Keep this manual for the safety warnings
and precautions, operating, inspection and maintenance instructions. When using this tool, basic precautions
should always be followed to reduce the risk of personal injury and/or damage to the equipment. Note that when
this manual refers to a part number, it refers to the parts list included. Before allowing someone else to use this
tool, make sure they are aware of all safety information.
WORK AREA
1. Keep your work area clean and well lit. Cluttered and dark areas invite accidents.
2. Operate in a safe work environment. Do not use machines or tools in damp or wet locations. Do not expose
to rain. Do not use power tools in the presence of flammable gases or liquids.
3. Keep children, bystanders and visitors away from the work area. Do not let them handle tools or extension
cords. No one should be in the work area if they are not wearing suitable protective equipment.
4. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or
dust. Power tools create sparks which may ignite the dust or fumes.
5. Store unused equipment. When not in use, tools must be stored in a dry location to prevent rust. Always
lock up tools and keep them out of reach of children
6A ELECTRIC DIE GRINDER
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For technical questions call: 1-800-665-8685
8395907 V 2.0
PERSONAL SAFETY
1. Dress properly, wear protective equipment. Use breathing, ear, eye, face, foot, hand and head protection.
Always wear ANSI approved impact safety goggles, which must provide both frontal and side protection.
Protect your hands with suitable gloves. Wear a full face shield if your work creates metal filings or wood
chips. Protect your head from falling objects by wearing a hard hat. Wear an ANSI approved dust mask or
respirator when working around metal, wood and chemical dusts and mists. Wear ANSI approved earplugs.
Protective, electrically non-conductive clothes and non-skid footwear are recommended when working. Wear
steel toed boots to prevent injury from falling objects.
2. Do not over reach; keep proper footing and balance at all times. Proper footing and balance enables better
control of the tool in unexpected situations.
3. Keep any articles of clothing, jewelry, hair etc. away from moving parts. These can be caught in moving
parts, resulting in damage to the tool and/or serious injury.
4. Stay alert, watch what you are doing and use your common sense. Do not operate any machine or tool when
you are tired, under the influence of drugs, alcohol or medications.
5. Use clamps or other practical ways to secure and support the work piece to a stable platform. Holding the
work piece by hand or against your body is unstable and may lead to loss of control.
6. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source
and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or
energising power tools that have the switch on invites accidents.
ELECTRICAL SAFETY
1. Disconnect power supply. Disconnect from power supply when not in use, before cleaning, servicing or
changing any parts or accessories.
2. Protect yourself against electric shocks when working on electrical equipment. Avoid body contact with
grounded surfaces such as pipes, radiators, cooking stoves and refrigerators. There is an increased chance
of electrical shock if your body is grounded.
3. Use caution when performing an operation where you may contact hidden wiring or it’s the tool’s power
cord. Contacting a “live" wire may make exposed metal parts of the power tool “live" and could give the
operator an electrical shock.
4. Double insulated tools are equipped with a polarized plug (one blade is wider than the other). This plug will
fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does
not fit, contact a qualified electrician to install a polarized outlet. Do not change the plug in any way. Double
insulation eliminates the need for a three wire grounded power cord and grounded power supply system.
5. Grounded tools must be plugged into an outlet properly installed and grounded in accordance with all codes
and ordinances. Never remove the grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. If
the tool should electronically malfunction or break down, grounding provides a low resistance path to carry
electricity away from the user.
6. Do not abuse the cord. Never use the cord to carry the tools or pull the plug from an outlet. Keep cord away
from heat, oil, sharp edges or moving parts. Do not operate this tool if the power cord is frayed or damaged.
Replace damaged cords immediately. Damaged cords increase the risk of electric shock. Do not modify
the plug in any way.
7. When operating a power tool outside, use an outdoor extension cord marked “W-A" or “W". These cords are
rated for outdoor use and reduce the risk of electric shock. Use in conjunction with a Ground Fault Circuit
Interrupter (GFCI). If operating a power tool in a damp location is unavoidable, the use of a GFCI reduces the
risk of electric shock. It is recommended that the GFCI should have a rated residual current of 30 mA or less.
8. Avoid using an unnecessarily long extension cord. Choose a cord that is appropriate for the situation, as a
cord that is too long and running across the floor can be more dangerous than helpful. Using a cord that is
too long or too thin could damage the tool. Unroll the cord completely to prevent it from overheating.
9. Place the electrical cord in a position that prevents it from coming into contact with the tool and from getting
caught by the work piece. The cord should always stay behind the tool.
6A ELECTRIC DIE GRINDER
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For technical questions call: 1-800-665-8685
8395907V 2.0
EXTENSION CORD PRECAUTIONS
WARNING! Keep the extension cord clear of the working area.
• Position the cord so it will not get caught on the workpiece, tools or any other obstructions while you are
working with the power tool.
• Make sure any extension cord used with this tool is in good condition. When using an extension cord, be
sure to use one of heavy enough gauge to carry the current the tool will draw. An undersized cord will cause
a drop in line voltage resulting in loss of power and overheating.
• The table bellow shows the correct size to use according to cord length and nameplate ampere rating. If in
doubt, use the next heavier gauge. The smaller the gauge’s number the heavier the cord.
MINIMUM GAUGE (AWG)
EXTENSION CORDS (120 V use only)
Amperage rating Total length
More than Less more than 25’ (7.5 m) 50’ (15 m) 100’ (30 m) 150’ (45 m)
0 6 18 16 16 14
6 10 18 16 14 12
10 12 16 16 14 12
12 16 14 12 Not Applicable
• Be sure your extension cord is properly wired and in good condition. Always replace a damaged extension
cord or have it repaired by a qualified electrician before using it. Protect your extension cord from sharp
objects, excessive heat and damp or wet areas.
• Use a separate electrical circuit for your power tools. This circuit must not be less than 14 gauge wire and
should be protected with either a 15 A time delayed fuse or circuit breaker. Before connecting the power
tool to the power source, make sure the switch is in the OFF position and the power source is the same as
indicated on the nameplate. Running at lower voltage will damage the motor.
VIBRATION PRECAUTIONS
This tool vibrates during use. Repeated or long-term exposure to vibration may cause temporary or permanent
physical injury, particularly to the hands, arms and shoulders.
1. Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and
then have regular medical check ups to ensure medical problems are not being caused by or worsened from
tool use. Pregnant women or people who have impaired blood circulation to the hands, past hand injuries,
nervous system disorders, diabetes or Raynaud’s Disease should not use this tool. If you feel any medical
symptoms related to vibrations (such as tingling, numbness, and white or blue fingers), seek medical
attention as soon as possible.
2. Do not smoke during use. Nicotine reduces the blood flow to the hands and fingers, increasing the risk
of vibration-related injury.
3. Wear suitable gloves to reduce the vibration effects on the user.
4. Use tools with the lowest amount of vibration when there is a choice between different processes.
5. Do not use for extended periods. Take frequent breaks when using this tool.
6. Let the tool do the work. Grip the tool as lightly as possible (while still keeping safe control of it).
7. To reduce vibrations, maintain tool as explained in this manual. If abnormal vibrations occur, stop using this
tool immediately.
8. This tool will not stop moving immediately. Do not lay the tool down or leave it unattended until it has come
to a complete stop. A part that is moving could make the tool jump or grab a surface and pull the tool out
of your control.
6A ELECTRIC DIE GRINDER
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For technical questions call: 1-800-665-8685
8395907 V 2.0
SPECIFIC SAFETY PRECAUTIONS
• Do not force the tool. Your tool will perform best at the rate for which it was designed. Excessive force only
causes operator fatigue, increased wear and reduced control.
• Maintain tools with care. Keep handles dry, clean and free from oil and grease. Keep cutting edges sharp
and clean. Follow instructions for lubricating and changing accessories. Periodically inspect tools, cords and
extension cords for damage. Have damaged parts repaired or replaced by an authorized service facility.
• Unplug the tool when it is not in use, before changing accessories or performing recommended
maintenance.
• Remove adjusting keys and wrenches. Make a habit of checking that adjusting keys, wrenches, etc. are
removed from the tool before turning it on.
TOOL USE AND CARE
1. Use the right tool for the job. Do not attempt to force a small tool or attachment to do the work of a larger
industrial tool. The tool will perform better and more safely at the task for which it was intended. Do not
modify this tool or use for a purpose for which it was not designed.
2. Securely hold this tool using both hands. Using tools with only one hand can result in loss of control.
WARNING! Do not place hands over the air vents. Proper cooling of the motor is necessary to ensure normal life
of the tool.
3. Maintain tools with care. Keep tools clean, and in good condition for a better and safer
performance. Follow instructions for lubricating and changing accessories. Inspect tool
fittings, alignment periodically and, if damaged, have them repaired by an authorized
technician or replaced. The handles must be kept clean, dry and free from oil and grease
at all times. A properly maintained tool reduces the risk of binding and is easier to
control. Applying excessive force can lead to slips and damage to your work or
personal injury.
4. Remove adjusting keys and wrenches. Check that keys and adjusting wrenches are removed from the tool or
machine before connecting it. A wrench or key that is left attached to a rotating part of the tool increases the
risk of personal injury.
5. Avoid unintentional starts. Be sure that the switch is in neutral or OFF position when not in use and before
connecting it to any power source. Do not carry the tool with fingers near or on the switch.
6. Only use the lubricants supplied with the tool or specified by the manufacturer. Other lubricants may not be
suitable and may damage the tool or even make the tool explode.
7. When not in use for an extended period, apply a thin coat of lubricant to the steel parts to avoid rust.
8. Maintain the label and name plate on the tool. These carry important information. If unreadable or missing,
contact Princess Auto for a replacement.
6A ELECTRIC DIE GRINDER
6
For technical questions call: 1-800-665-8685
8395907V 2.0
LUBRICATION
1. It is important that the tool be properly lubricated. Without proper lubrication the tool will not work properly
and parts will wear prematurely. Avoid over-lubricating the tool.
2. Use the proper lubricant and fill or lubricate parts ONLY as necessary. Use only recommended lubricants.
Substitutes may harm the rubber compounds in the tool’s O-rings and other rubber parts.
3. All of the bearings in this tool are lubricated with a sufficient amount of high-grade lubricant for the life of
the unit under normal conditions. Therefore, no further lubrication is required.
WARNING! NEVER use WD-40 to clean or lubricate your tool. WD-40 is a solvent that will break down the
internal grease and cause the tool to seize up.
OPERATION
CAUTION! Be sure to switch the power off and unplug the grinder to avoid accidental starting which could result
in damage to the workpiece or personal injury.
NOTE: Use type 1 grinding wheels with a maximum 1-1/2" diameter and maximum ¼" thickness only. Always use
eye and face protection when grinding.
INSPECTION
• Collet Chuck. Your rotary die grinder is equipped with a collet chuck to receive ¼"
diameter mandrels.
• Grinder Wheels and Rotary Files. With a ¼" mandrel, the maximum diameter of
grinding wheels is 1-1/2" and the maximum diameter of rotary files is 3/8". Use
grinding wheels when working with hard materials and rotary files for milling soft
materials such as nonferrous metals (aluminum, brass, copper, etc.) Using grinding
wheels when working with soft materials will clog the wheel, preventing it
from cutting as it was designed.
WARNING! Never use wheels or files rated below 30,000 RPM. Wheels or files rated for
less than30,000 RPM could disintegrate while in use, causing serious injury.
INSTALLATION
Attach wheel or file to grinder
1. Push the spanner / wrench in the collet shaft. (Figure 3)
2. Insert the mandrel into the collet chuck a minimum of 1/4" to prevent the wheel or file
from disengaging from the grinder while in use.
NOTE: Inserting the mandrel a minimum of 1/4" into the collet chuck minimizes
vibration, delivers better results, and reduces the risk of injury.
3. Tighten collet chuck securely with the wrench provided.
NOTE: Always check the cutter for tightness before each use. A loose cutter can be
thrown from the tool with considerable force, causing injury.
4. The tool can be mounted to a post bracket (sold separately). It can mount your tool
solidly on any metal lathe cross-slide for precision internal milling and grinding or a
centered work piece.
WARNING! DO NOT attempt to modify tools or create accessories. Any such alteration or modification is misuse
and could result in a hazardous condition leading to possible serious injury. It will also void the warranty.
6A ELECTRIC DIE GRINDER
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For technical questions call: 1-800-665-8685
8395907 V 2.0
MAINTENANCE
1. Inspecting tightness of the screws. Periodically inspect each screw on all components. If any screws are
loose, tighten them to avoid a hazardous situation.
2. Maintenance of the motor. The winding parts of the motor unit are the “heart" of this device. Exercise with
due care that this part is not scarred or sprayed with oil.
3. Further maintenance should be performed only by an authorized service representative.
DISPOSING OF THE TOOL
If your tool has become damaged beyond repair, do not throw it out. Bring it to the appropriate recycling facility.
6A ELECTRIC DIE GRINDER
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For technical questions call: 1-800-665-8685
8395907V 2.0
PARTS BREAKDOWN
No. Description Qty
1 Rear Cover 1
2 Screw ST3.9 x 19 1
3 Cable + Plug 1
4 Cable + Sheath 1
5 Screw ST2.9 x 9 1
6 Brush Support Assemblies 2
7 Carbon Brush 2
8 PCB 1
9 PCB Box 1
10 Housing 1
11 Switch Assembly 1
12 Plug 2 1
13 Switch Box 1
14 Cord Clamp 1
15 Screw ST3.9 x 14 2
16 Square Nut 1
17 Screw M4 x 8 1
18 Plug 1 1
19 Spring 1
20 Switch Pull Rod 1
21 Switch Button 1
22 Air Guiding Ring 1
23 Stator 1
24 Stator Press Block 2
25 Stator Hook 2
No. Description Qty
26 Screw 3.9 x 60 2
27 Snap Ring 1
28 Shock Proof Ring 1
29 Head Housing 1
30 Screw 3.9 x 24 4
31 Nut for Head Housing 1
32 Dust Retainer 1
33 Snap Ring 1
34 Inductive Magnetic Ring 1
35 Bearing Cap 1
36 Bearing 627 1
37 Carbon Retainer 1
38 Rotor 1
39 Fan 1
40 Bearing Base 1
41 Bearing 6001 1
42 Snap Ring 1
43 Nylon Cover 1
44 Bearing 6001 1
45 Snap Ring 2
46 Bearing 6901 1
47 Output Shaft 1
48 Collet 1
49 Collet Nut 1
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