17
CUTTING-OFF
& GRINDING
WHEELS
TROUBLESHOOTING GRINDING WHEELS
Wheel does not grind
Cause
Solution
wheel too hard, wheelglazing
use softer wheel
Cause
Solution
not enough pressure
increase pressure
Cause
Solution
machine power too low
use machine with more power
Cause
Solution
loading and wheelglazing (non-ferrous)
use Flexovit Alu wheels which counteracts loading and wheelglazing
Excessive wheelwear
Cause
Solution
wheel too soft
use harder wheel
Cause
Solution
too much pressure
reduce pressure, let the wheel do the grinding
Cause
Solution
decrease of peripheral speed
use machine with more power, reduce pressure on the machine
Cause
Solution
too low peripheral speed
max. 80m/s is optimum speed
Crumbled wheel edge
Cause
Solution
grinding angle too flat
change angle to 30 - 40°
Cause
Solution
workpiece is moving
clamp the workpiece properly
Cause
Solution
too much pressure
reduce pressure, let the wheel do the grinding
Cracks on the bottom of the wheel
Cause
Solution
contact area too large
reduce contact area
Cause
Solution
too much pressure
reduce pressure, let the wheel do the grinding
Unbalance
Cause
Solution
dirty flanges
clean flanges
Cause
Solution
wheel mounting insecure
tighten flanges
Cause
Solution
flanges with different diameter
replace flanges