OPERATOR’S MANUAL
P 52 / 57
TROUBLE CAUSE CORRECTION
VIBRATION 1. Insufficient clearance rubbing
2. Machine at fault
1. Use recommended clearance
angle
2. Check machine, be sure
arbor is at least 1/3 diameters
of cutter
CUTTER BURNS 1. Insufficient lubricant
2. Speed too fast
1. Add sulfur base oil
2. Decrease speed
HARD TO CHANGE SPEED OF
HORIZONTAL
1. Gears not meshed
2. Poor lubrication on spindle
shaft and gears
1. Use job button
2. Check lubrication
POOR SURFACE FINISH 1. Feed too high
2. Dull tool
3. Speed too low
4. Insufficient number of cutter
teeth
1. Decrease feed and increase
speed
2. Resharpen
3. Increase surface speed
4. Use cutter with more closely
spaced teeth
WORK BURNISHING 1. Cut is too light
2. Insufficient peripheral relief
3. Land too wide
1. Increase depth of cut
2. Increase peripheral relief
angle
3. Decrease width of land
TEETH BREAKING Feed too high Decrease feed per teeth may be
possible to maintain rate by
increasing the number of teeth
CHATTER 1. Lack of rigidity in the
machine, fixtures arbor or
workpiece
2. Cutting load too great
3. Dull cutter
4. Poor lubrication
5. Straight tooth cutter
6. Peripheral relief angle too
great
1. Improve rigidity
2. Decrease number of teeth in
contact with workpiece
3. Resharpen
4. Improve lubrication
5. Use helical tooth cutter
6. Decrease relief angle
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