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> Use of Bench and Pedestal Grinders

Fasten pedestal and bench grinders securely.
Ensure all the guards are in place and secure before using a grinder.
Adjust tool rests to within 3 mm (1/8 in.) of wheels. Never adjust rests while wheels are moving. Work rest height should be on horizontal centre line of the machine spindle.
Maintain 6 mm (1/4 in.) wheel exposure with a tongue guard or a movable guard.
Check that wheels have blotters on each side.
Check the wheel fits properly to the spindle when mounting. If it is loose, get another wheel.

Safety procedures to follow when using bench and pedestal grinders

Stand to one side of the grinder until the wheel reaches operating speed.
Bring work into contact with the grinding wheel slowly and smoothly, without bumping.
Apply gradual pressure to allow the wheel to warm up evenly. Use only the pressure required to complete a job.
Move the work back and forth across the face of the wheel. This movement prevents grooves from forming.
Wheels are made only for grinding certain items. Do not grind rough forgings on a small precision grinding wheel.

Support dressing tool so you can apply leverage without undue effort

Dress wheels regularly. Do frequent, light dressings rather than one heavy dressings.
Support dressing tools so you can apply leverage without undue effort. With revolving cutter dressing tools use the lugs as anchors.
Replace worn wheels if you cannot dress it.
Ensure the grinder speed does not exceed the operating speed marked on the wheel.
Visually inspect wheels for possible damage before mounting.
Wear proper personal protective equipment:
- eye, ear and face protection,
- metatarsal safety boots, where required,
- respiratory protection may be required, depending on the work.
Wear gloves only where necessary.

What should you avoid when using bench and pedestal grinders?

Do not use a wheel that has been dropped.
Do not use a wheel that does not fit properly to the spindle.
Do not use excessive force to tighten the nut of the wheel. The force can crack the wheel.
Do not grind wood, plastics and non-iron metals on ordinary wheels.
Do not leave grinding wheels standing in liquids. The liquid can cause balance problems.
Do not grind on the side of a regular wheel.

Document last updated on March 1, 2009