MAINTENANCE / REP
AIR
TROUBLESHOOTING
OPERA
TION
ASSEMBL
Y / INST
ALLA
TION
SAFETY
/ SPECIFICA
TIONS
GETTING ST
ARTED
10
Symptom
Possible Cause(s)
Corrective Action
Frequent wave on the surface of
the workpiece
Excess machine vibration
1. Make sure machine is level and on a
solid surface
2. Check the spindle
Grinding wheel is not balanced.
Dress and balance the wheel
Wheel is too hard.
1. Use a softer wheel
2. Use a rough wheel
3. Reduce the feed rate
Minor scratch on the surface.
Improper operation.
1. Dress the wheel. Make sure wheel edge
is parallel with workpiece.
2. Slow down the table crossfeed
3. Make sure workpiece is securely
fastened to the chuck
Improper dressing of wheel
1. Tighten the dresser
2. Use proper dressing speed
3. Don’t dress too deep at one time
Burning spots and cracks
Improper operation
1. Reduce the feed amount
2. Use the proper table cross feed rate.
Improper heat treatment
Perform heat treating again
Unsuitable grinding wheel
1. Dress the wheel finely and frequently
2. Use a softer and rougher wheel
Poor grinding ability, wheel clogs
and workpiece shows burns
Wheel is too hard
1. Increase the table and crossfeed rates
2. Reduce the wheel diameter or width
3. Use a sharp diamond for dressing
4. Use a rougher wheel
Wheel dulls and grit falls off
Wheel is too soft
1. Reduce table and crossfeed rates
2. Increase wheel diameter if possible
3. Lightly dress the wheel, repeatedly
TROUBLESHOOTING GUIDE
