What safety procedures should you follow when using bench and pedestal grinders?
- context An operator must be fully trained and instructed in the safe use, care, and protection from abrasive wheels before use.
- context Fasten the pedestal and bench grinders on a solid surface securely.
- context Ensure all the guards are in place and secure before using a grinder.
- context Adjust tool rests to within 3 mm (1/8 in.) of wheels. Never adjust rests while the wheels are moving. Work rest height should be on a horizontal centre line of the machine spindle.
- context Maintain 6 mm (1/4 in.) wheel exposure with a tongue guard or a movable guard.
- context Check that the wheels have blotters on each side.
- context Check the wheel fits properly to the spindle when mounting. If it is loose, get another wheel.
- context Tighten the nuts before you turn the grinder on.
- context Before you plug in the grinder, manually spin the wheel to make sure it is spinning freely.
- context Make sure the cables are not damaged and in good condition.
- context Keep the cables out of the work area.
- context eye, ear and face protection,
- context metatarsal safety boots, where required, and
- context respiratory protection may be required, depending on the work.
- context Wear proper personal protective equipment:
- context Wear gloves only where necessary and if there is no risk of entanglement.
- context Make sure all guards are in place.
- context Inspect the wheel for chips or cracks before using.
- context Stand to one side of the grinder until the wheel reaches operating speed.
- context Bring work into contact with the grinding wheel slowly and smoothly without bumping.
- context Apply gradual pressure to allow the wheel to warm up evenly. Use only the pressure required to complete a job.
- context Move the work back and forth across the face of the wheel. This movement prevents grooves from forming.
- context Wait for the piece to cool before touching the end.
- context Wheels are made only for grinding certain items. Do not grind rough forgings on a small precision grinding wheel.
- context Dress wheels regularly. Do frequent, light dressings rather than one heavy dressing.
- context Support dressing tools so you can apply leverage without undue effort. With revolving cutter dressing tools, use the lugs as anchors.
- context Replace worn wheels if you cannot dress it.
- context Ensure the grinder speed does not exceed the operating speed marked on the wheel.
- context Visually inspect wheels for possible damage before mounting.
- context Clean the grinder and area after completing the work.