6
Safety Precautions
1. Read all instructions before using this tool. All operators must be
fully trained in its use and aware of these safety rules.
2. The tool RPM should be checked on a regular basis (at shift change).
3. Make sure the tool is disconnected from the air supply. Select a
suitable abrasive cut-off wheel and secure it to the mounting shaft
using the wheel retainer and wheel arbor supplied with the tool.
Be careful to center the cut-off wheel on the wheel arbor before
tightening the wheel retainer nut. Do not over tighten the wheel
retainer or you will crack the wheel.
4. Always wear required safety equipment when using this tool.
5. Always remove the air supply to the tool before fitting, adjusting or
removing the abrasive cut-off wheel.
6. Always adopt a firm footing and grip and be aware of torque
reaction developed by the tool.
7. Use only 3M approved spare parts.
8. Always ensure the material being worked is firmly fixed to avoid
movement.
9. Check hose and fittings regularly for wear. Do not carry the tool by
its hose; always be careful to prevent the tool from being started
when carrying the tool with the air supply connected.
10. Dust can be highly combustible. Keep working area clean.
11. If tool is serviced or rebuilt check to ensure that the maximum tool
RPM is not exceeded and that there is no excessive tool vibration.
12. Do not exceed maximum recommended air pressure. Use safety
equipment as recommended.
13. Prior to installing any abrasive cut-off wheel, always check that it’s
marked maximum operating speed is equal or higher than the rated
speed of this tool.
14. The tool is not electrically insulated. Do not use where there is a
possibility of contact with live electricity, gas pipes, and/or water
pipes.
15. Take care to avoid entanglement with the moving parts of the tool
with clothing, ties, hair, cleaning rags or loose hanging objects. If
entangled, stop air supply immediately to avoid contact with moving
tool parts.
16. Keep hands clear of the spinning cut-off wheel during use.
17. If the tool appears to malfunction, remove from use immediately and
arrange for service and repair.
18. Do not allow the tool to free spin without taking precautions to
protect any persons or objects from the rupture of the abrasive
cut-off wheel.
19. Immediately release the start handle in the event of any disruption
of pressure; do not attempt to re-start until the disruption has been
corrected.
20. When tool is not in use, store in a clean, dry environment free of
debris and in a manner that ensures that the cutting-off wheel is
not damaged.
21. Fixture workpiece such that the cut slot is kept at a constant or
increasing width during the operation.
22. Operate tool in a well lit work area.
23. Recycle or dispose of tool according to Local, State, and Federal
regulations.
3M™ Cut-Off Wheel
3M™ Cut-Off Wheels are designed for use on the 3M™ Cut-Off Wheel Tools.
Cut-Off Wheel Tool Model number 20235 is designed for use with 5” diameter
and 125 mm diameter abrasive wheels. When mounting new unused abrasive
wheels, ensure the true wheel diameter is no larger than 127.5 mm and no
smaller than 122.5 mm.
See 3M ASD Accessory catalog 61-5002-8098-9 and Fantastic Finishes &
More catalog 61-5002-8097-1 for additional Back-Up Pads and Accessories.
Figure 1
Closed Loop Pipe System
Sloped in the direction of air flow
Drain Leg
Ball Valve
To Tool Station
Filter
Drain Valve
Regulator
Lubricator
Ball
Valve
Ball Valve
Air Flow
Air Dryer
Air Compressor
and Tank
Air Hose
To Coupler
at or near Tool
Cut-Off Tools
Removing and Mounting
Cut-Off Wheels on tool
1. Disconnect air line from tool.
2. Use the hex wrench for the 3” and 4” cut-off tool and the flat wrench for
the 4-1/2”, 5”, and 6” cut-off tools to secure the tool spindle.
3. Use the flat wrench for the 3” and 4” cut-off tool and the adjustable
spanner wrench for the 4-1/2”, 5” and 6” cut-off tools to turn the outer
wheel retainer counter clockwise.
4. After the old cut-off wheel has been removed from the tool, inspect
the threaded shaft to ensure that the threads are free of debris and
undamaged.
5. Place the new cut-off wheel on the shaft with the center hole aligned on
the centering lip of the wheel arbor.
6. Secure the tool spindle and wheel retainer with the appropriate
wrenches and tighten the wheel retainer. Be careful not to over tighten
the wheel retainer or the cut-off wheel could be damaged.
