Abrasive Grinding and Cutting Wheels

UNB Reference Number: 7818
Authorized by: J. M. Anderson, President,
Effective Date: December 1, 1978
Revised: September 2001
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To outline the hazards and regulations relating to abrasive grinding and cutting wheels.


All University personnel using abrasive grinding and/or cutting wheels.

Storage, Handling, and Inspection

  • Abrasive wheels clearly marked as to specified speed, must be stored in a manner whereby they will not be subjected to extremes of temperature and humidity or damage from impact.
  • Care must be taken when handling abrasive wheels to prevent damage from impact.
  • Abrasive wheels must be inspected for possible defects prior to being used.



  • Abrasive wheels and retaining flanges shall have good contact over the surface area.
  • All abrasive wheels must be mounted between flanges which should not be less than 1/3 the diameter of the wheel.
  • Work rests for grinding wheels shall have a maximum clearance of 1/8" from the grinding wheel and be in a position above the centre line of the wheel.


  • Abrasive wheels must never be operated at a speed which exceeds the manufacturers recommendations.
  • The governor on portable grinding or cutting tools must never be tampered with.
  • Where possible, persons operating abrasive cutting wheels should avoid standing in direct line with the wheel.
  • New abrasive and grinding wheels shall be run at full operating speed for a few seconds before applying any work.
  • Work shall be applied gradually against 'cold' abrasive wheels to allow the wheel to warm up.
  • Grinding on the sides of straight abrasive or grinding wheels shall not be permitted except on wheels designated for that purpose.

Personal Protection

  • Eye protection shall be worn by persons operating abrasive grinding or
  • All abrasive grinding or cutting wheels will be fitted with protective hoods which enclose the wheel as closely as the work allows.
  • Mechanical exhaust or respiratory protection shall be employed by persons working with abrasive tools under dusty or confined conditions.