Troubleshooting

Symptom	Cause	Remedy
Wheel glazed & dull	Dressing technique too fine Work speed too slow Cut too light Wheel too hard Wheel speed too fast	Use coarser dressing technique Increase work speed Increase cut Use softer wheel Decrease wheel speed
Work heat distorted	Work speed too high Wheel too hard Dry grinding	Decrease work speed Use softer wheel Use grinding fluid
Wheel rubbing & burning work	Wheel glazed	Dress wheel Use softer wheel Increase work speed
Chatter, bouncing, or hammering	Loose spindle bearings Spindle deflection Faulty belt Motor vibration Machine vibration Wheel too hard Wheel out of balance Wheel improperly dressed Improper work speed Wheel speed too high	Check spindle bearings Use shorter extension Check belt for uneven thickness & bumpiness Check motor bearings and motor mount Check machine and foundation vibration Use softer wheel Use balanced wheels Redress wheel Increase or decrease work speed Decrease wheel speed
Scratches, fishtails in work	Grift in coolant Faulty dressing Sludge and grit in wheel guard	Filter coolant Use sharp diamond Use finer dressing technique Carefully clean wheel guard
Traverse marks in work	Corners not rounded off Spring in spindle Too deep of cut Work speed too slow	Break corners by dressing Check for warped or out of round spindle Decrease cut Increase work speed and change traverse rate