Two thirds of the accidents involving use of hand-operated abrasive products are preventable.They are usually the result of improper mounting, excessive speed, abusive and/or careless handling of the grinder.


The most important requirements in avoiding these accidents with abrasive products are safe tools, proper operation and adherence to accident prevention steps. The following are some common precautions to be observed :


  • All portable type grinders should be inspected at regular intervals to ensure that:
             - the mounting flanges are in good condition, of proper size and
             - the speed governing device is functioning properly,
             - and no damage has occurred to the grinder or wheel.


  •  User should be re responsible for the regular inspection and maintenance of his own grinder unit




1. Always handle and store wheels in a careful manner.

1. Don't use a wheel that has been dropped. The impact may have resulted in breakage.

2. Always check maximum operating speed established for wheel against machine speed.

2. Don't exceed maximum operating speed established for the wheel.

3. Always check mounting flanges for equal and correct diameter (at least1/3 diameter of the wheel)

3. Don't force a wheel onto the machine or alter the size of the arbor hold. Don't use wheel that doesn't fit the arbor, get one that does.

4. Always use mounting blotters supplied with wheels.

4. Don't use mounting unless they are 1/3 the diameter of the wheel and is clean, flat and free of  burrs.

5. Always use a safety guard covering at least one-half of the grinding wheel.

5. Don't over tighten the mounting nut.

6. Always allow newly mounted wheel to run at operating speed with guard in place, for at least one minute before grinding.

6. Don't grind using the side of the wheel unless it was specifically designed for that purpose.

7. Always wear protective goggles or other protective mask.

7. Don't start the machine until the wheel guard is in place.

8. Always turn off coolant before stopping wheel to avoid creating an out-of-balance condition.

8. Don't jam work into the wheel.


9. Don't stand in front of a grinding wheel when grinder is started.


10. Don't grind material which the wheel is not designed for.




1. Do store wheels in a dry place at a constant temperature.

1. Don't store wheels in a damp place, or in extreme hot or cold temperatures.

2. Do provide proper racks, bins or drawers for storing various types of wheels.

2 .Don't store wheels directly on edge with only one point touching shelf.

3. Do store straight and tapered wheel on edge in racks with two point cradle support, and partitions separating wheels.

3. Don't store wheels on edge without guard to prevent rolling.

4. Do use flat shelf for storing thin wheels with resin bond to prevent warping.

4. Don't handle wheels carelessly, grinding wheels are brittle and breaks easily.

5. Do stack large flaring cup wheels on flat shelf face-to-face and base-to-base.

5. Don't hump or drop wheels.

6. Do use bins, boxes or drawers to store internal wheels, cups and other small wheels.

6. Don't roll abrasive wheels across a surface.


7. Don't pile heavy objects on top of wheels, treat them as you would other fine tools.