1/4" Angle Die Grinder USER`S MANUAL ITEM# 157792

1/4" Angle Die Grinder USER`S MANUAL ITEM# 157792
1/4" Angle Die Grinder
USER’S MANUAL
WARNING: Read carefully and understand all ASSEMBLY AND OPERATION
INSTRUCTIONS before operating. Failure to follow the safety rules and other basic safety
precautions may result in serious personal injury.
ITEM# 157792
Page: 1 of 6
For technical questions and replacement parts, please call 1-800-222-5381.
Thank you very much for choosing a NORTHERN TOOL & EQUIPMENT CO., INC.
Product! For future reference, please complete the owner’s record below:
Model: _______________
Purchase Date: _______________
Save the receipt, warranty and these instructions. It is important that you read the
entire manual to become familiar with this product before you begin using it.
This machine is designed for certain applications only. Northern Tool + Equipment
strongly recommends that this machine is not modified and/or used for any
application other than that for which it was designed. If you have any questions
relative to a particular application, DO NOT use the machine until you have first
contacted Northern Tool + Equipment to determine if it can or should be performed
on the product.
Before using this product, please read the following instructions carefully.
Technical Specifications
Free Speed
Max air pressure
Air Consumption
Air Inlet
Air Hose
Accessories
Air Exhaust
Chuck Size
Specifications
20,000 RPM
90 PSI
4 CFM
1/4"
3/8"
2 spanners
Adjustable rear exhaust
1/4"
GENERAL SAFETY RULES
WARNING: Read and understand all instructions. Failure to follow all instructions listed
below may result in electric shock, fire and/or serious injury. The term “power tool” in all of the
warnings listed below refers to your pneumatic tool.
WARNING: The warnings, cautions, and instructions discussed in this instruction
manual cannot cover all possible conditions or situations that could 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.
SAVE THESE INSTRUCTIONS
You will need this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures, parts list and assembly diagram. Keep this
manual and invoice in a safe and dry place for future reference.
Page: 2 of 6
WORK AREA / PERSONAL SAFETY / TOOL CARE
1.
Keep work area clean. Cluttered areas invite injuries.
2.
Observe work area conditions. Do not use machines or power tools in damp or wet
locations. Don’t expose to rain. Keep work area well lighted.
3.
Keep bystanders, pets and children away. Children must never be allowed in the work
area. Do not let them handle machines, tools, extension cords, or air hoses.
4.
Store idle equipment. When not in use, tools must be stored in a dry location to inhibit
rust. Always lock up tools and keep out of reach of children.
5.
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. There are certain applications for which this tool was
designed. It will do the job better and more safely at the rate for which it was intended. Do
not modify this tool and do not use this tool for a purpose for which it was not intended.
6.
Dress properly. Do not wear loose clothing or jewelry as they can be caught in moving
parts. Protective, electrically non-conductive clothes and non-skid footwear are
recommended when working. Wear restrictive hair covering to contain long hair. Always
wear steel toe shoes when operating the Air Die Grinder.
7.
Use eye and ear protection. Always wear ANSI-approved impact safety goggles and ear
protection.
8.
Do not overreach. Keep proper footing and balance at all times. Do not reach over or
across running machines or air hoses.
9.
Maintain tools with care. Keep tools clean for better and safer performance. Follow
instructions for lubricating and changing accessories. Inspect tool cords and air hoses
periodically and, if damaged, have them repaired by an authorized technician. The handle
must be kept clean, dry, and free from oil and grease at all times.
10. Disconnect air supply. Disconnect air hose when not in use.
11. Avoid unintentional starting. Be sure the trigger is not depressed when carrying the Air
Die Grinder.
12. Stay alert. Watch what you are doing, use common sense. Do not operate any tool when
you are tired.
13. Check for damaged parts. Before using any tool, any part that appears damaged should
be carefully checked to determine that it will operate properly and perform its intended
function. Check for alignment and binding of moving parts; any broken parts or mounting
fixtures; and any other condition that may affect proper operation. Any part that is
damaged should be properly repaired or replaced by a qualified technician. Do not use the
Air Die Grinder if the trigger does not turn on and off properly.
14. Guard against electric shock. Prevent body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerator enclosures.
15. Do not operate tool if under the influence of alcohol or drugs. Read warning labels on
prescriptions to determine if your judgment or reflexes are impaired while taking drugs. If
there is any doubt, do not operate the tool.
16. Use proper size and type extension cord. If an extension cord is required for the air
compressor, it must be of the proper size and type to supply the correct current to the tool
without heating up. Otherwise, the extension cord could melt and catch fire, or cause
electrical damage to the tool. Check your compressor’s manual for the appropriate size
cord.
Page: 3 of 6
17. For your safety, maintenance should be performed regularly by a qualified
technician.
18. Use compressed air only — Never use combustible gases as a power source.
Note: Performance of the compressor (if powered by line voltage) may vary depending
on variations in local line voltage. Extension cord usage may also affect tool
performance.
Additional Safety Warnings
1.
Repetitive motions or exposure to vibration may be harmful to your hands and arms.
2.
When wearing gloves to operate the Air Angle Die Grinder, make sure that the gloves do
not interfere with operating the trigger. Test your gloves with the trigger before attaching
the unit to an air source.
3.
Never start the tool unless you have a firm grip with both hands and you are positioned at
your workpiece or area.
4.
Before using the Air Angle Die Grinder, know what is directly underneath the work area or
workpiece.
5.
The Air Angle Die Grinder can quickly penetrate material. If working directly on the ground,
make sure you are not directly above shallow cables, lines, or pipes.
6.
Never point the tool or the air hose (not included) at anyone.
7.
Keep your finger away from the trigger until you are ready to work.
Operation
Set Up
Fig. 1
1. You will need to prepare a 1/4" air connector (sold separately) to connect to the Air Inlet.
First, wrap the 1/4" air connector (not included) with pipe thread seal tape before
connecting to a Air Source Hose (not included).
2. Attach air hose to the Air Inlet on the Angle Die Grinder. Note: If you are not using an
automatic oiler system, before operation, add a few drops of Pneumatic Tool Oil to the
airline connection. Add a few drops more after each hour of continual use.
3. Set the air pressure on your compressor to 90 PSI. Do not exceed the recommended air
pressure of 90 PSI.
4. Check the air connection for leaks.
5. Turn off the compressor and disconnect the air source hose in preparation to load bits into
the Angle Die Grinder.
Page: 4 of 6
Diagram for the Angle Die Grinder
Parts List for the Angle Die Grinder
Part#
Description
Qty.
Part#
Description
Qty.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Housing
Valve Bushing
Trigger
Lever
Spring
Pin
O-Ring
Pin
O-Ring
O-Ring
Air Valve
Spring
Air Regulator
O-Ring
O-Ring
Valve Plug
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
Cylinder
Washer
Rotor Collar
Front Plate
Steel Ball
Bearing
Angle Gear
Clamp Nut
Cap
Angle Head
Grease Cap
Bearing
Angle Gear
Lock Nut
Work Spindle
Woodruff Key
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
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17
18
19
20
21
22
Muffle Cover
Air Inlet
Bearing
End Plate
Pin
Rotor
1
1
1
1
1
1
23
Rotor Blade
4
40
41
42
43
44
Chuck A 1/4"
Chuck A 1/8"
Collet Nut
Wrench
Wrench
Rubber Wrapper
1
1
1
1
1
1
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
reproductive harm. Some examples of these chemicals are:
• Lead from lead-based paints,
• Crystalline silica from bricks and cement and other masonry products, and
• 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 work with approved safety
equipment, such as those dust masks that are specially designed to filter out microscopic particles
Northern Tool + Equipment Co.,
2800 Southcross Drive West
P.O. Box 1499 Burnsville, MN 5337-0499
Made in China
Page: 6 of 6
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