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Updated: Aug 22, 2021

Never do

1. Permit untrained people to handle, store, mount or use abrasives

2. Mount or remove a wheel until the machine has been isolated from its power source

3. Mount a wheel that cannot be identified or one which does not bear the correct marking

4. Mount a wheel on a machine which does not display its spindle speed

5. Mount a wheel which is beyond its marked expiry date or recommended shelf life

6. Mount a wheel that has been dropped, damaged or incorrectly stored

7. Apply force to fit the wheel on the mounting device or alter the bore size or allow the wheel to overheat

8. Tighten flanges with excessive force or use a hammer or extension

9. Use damaged, distorted or dirty flanges and fastening screws

10. Use a machine which is not in good condition or one with a damaged guard

11. Turn on the machine until the wheel guard has been re-fitted, secured and adjusted correctly

12. Stand in the line of the grinding wheel when starting the motor after fitting or re-fitting a wheel

13. Start the wheel in contact with the work-piece or any other object

14. Mount a wheel on a machine running at a speed higher than the maximum operating speed marked on the wheel

15. Work from a ladder or in a position where you do not have full control of the machine

6. Impact the work onto the wheel or the wheel onto the work

17. Grind on the side of a wheel unless it is specially designed for this application

18. Apply side pressure by trying to cut curves or by grinding surfaces with cutting-off wheels

19. Allow the wheel to bounce or be trapped or pinched in the cut

20. Use type 27 depressed center grinding wheels at a steep angle or try to cut with them

21. Dress the wheel with any device other than that recommended

22. Press against the wheel surface to stop it or put down a machine until the wheel has stopped running

23. Wear the wheel down to the mounting flanges

24. Allow the gap between the wheel and the work-rest to exceed 3 mm

25. Allow coolant to run on a stationary wheel or leave the wheel running on an unattended machine


Always do

Observe the safety recommendations of the machine and wheel manufacturer

2. Keep the working area well lit, clean, tidy and free from obstructions

3. Avoid slippery and uneven floors and do not work on ice or snow

4. Ensure other workers in the vicinity and passers-by are protected from sparks and debris

5. Exercise care when handling abrasive wheels–they can easily be damaged

6. Store wheels in dry and frost-free conditions avoiding wide variations in temperature and the risk of damage

7. Visually check the wheel for damage or defects and conduct a ring test before mounting

8. Check that the wheel is the correct specification for the application and that the markings are intact and legible

9. Use the correct tools when mounting or removing a wheel

10. Ensure mounting flanges are in matched pairs, clean, free from burrs and distorted

11. Use blotters to prevent wheel slippage where required

12. Make sure that work-rests and work-piece clamping devices are secure and correctly positioned

13. Ensure guards are in position and correctly adjusted so that they do not foul the wheel

14. Rotate the wheel manually to ensure that it runs true and freely before turning on the power

15. Wear suitable protective clothing and equipment

16. Run the wheel for at least 30 seconds at operating speed after mounting or re-mounting.

17. Stand out of the line of the wheel when turning on the machine

18. Dress bench grinding wheels regularly to keep the cutting surface in good condition

19. Allow the wheel to come to rest naturally after turning off the machine

20. Ensure the work-piece is properly supported or clamped so that it cannot move during grinding or cutting

21. Spin out residual coolant from the wheel before turning off the machine

22. Report wheel breakages, keeping hold of all of the debris for examination

23. Ensure machine spindle speed is checked periodically using a tachometer

24. Ensure that damaged or defective wheels and worn-out wheels are destroyed to prevent them from being used

25. Ensure that the wheel is removed before transporting or storing portable machines.

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