Troubleshooting
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Operating Manual Skiving Machine ES 50-UK-V3/24.01.2012 41 von 45
2.6.1 Troubleshooting
2.6.1.1 Bad skiving results
Cause Elimination
Bell knife is blunt. Regrind bell knife.
Knife has a burr inside. Remove burr with emery feed
roll or oil stone.
Increased inside knife chamfer. Regrind bell knife.
Grinding wheel is blunt and/or
clogged.
Dress grinding wheel.
Adjustment of the bell knife is
incorrect.
Readjust distance to presser
foot.
Presser foot is worn. Replace presser foot by a new
one.
Stop is worn. Replace stop by a new one.
Play in flat bearing of guide head. Readjust flat bearing.
2.6.1.2 Insufficient feeding
Cause Elimination
Feeding power too low. Increase feeding power.
Feed roll is worn. Replace feed roll with a new
one.
Feed roll is smudged. Remove the abraded leather
particles from the feed roll with a
steel brush.
Bell knife is blunt. Regrind bell knife.
2.6.1.3 Bevels are too thick
Cause Elimination
Position of presser foot too high. Change adjustment of the
presser foot.
Position of stop is not correct. Readjust position of stop.
One side of presser foot is worn. Replace presser foot by a new
one.
Feed roll is damaged. Replace feed roll by a new one.
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