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TROUBLE
Excessive
Vibration
Motor stalls
Noisy Operation
Drill or Tool heats
up or burns work
Drill leads off
Excessive drill
runout or wobble
Work or fixture
comes loose or
spins
TROUBLE SHOOTING HINTS
PROBABLE CAUSE
1.Motor out of balance
2.Bad motor
1.Over feeding.
2.Dull drill.
3.Motor not building up to
running speed.
4.Bad motor
1.Excessive vibration
2.Improper quill adjustment.
3.Nosiy spline.
4.Noisy motor
1.Excessive speed.
2.Chips not clearing.
3.Dull tool.
4.Feedreate too slow.
5.Rotation of drill incorrect.
6.Failure to use cutting oil or
coolant (on steel)
1.No drill spot.
2.Cutting lips on drill off center.
3.Quill loose in head.
4.Bearing play.
1.Bent drill.
2.Bearing play.
3.Drill not seated properly in
chucks.
1.Failure to clamp workpiece or
work holding device to table.
REMEDY
1.Balance or replace problem motor.
2.Replace motor
1.Replace feed rate.
2.Sharpen drill and keep sharp.
3.Replace or repair motor .Check fuses in all
three legs on three phase motors and replace
if necessary.
4.Replace motor
1.Check remedy under excessive vibration.
2.Adjust quill.
3.Lubricate spline.
4.Check motor bearing or for loose motor fan.
1.Readuce speed.
2.Use pecking operation to clear chips.
3.Sharpen tool or replace.
4.Increase feed enough to clear chips.
5.Reverse motor rotation.
6.Use cutting oil or coolant on steel
1.Center punch or center drill workpiece.
2.Regrind drill.
3.Tighten quill.
4.Check bearings and reseat or replace if
necessary.
1.Replacedrill.Do not attempt to straighten.
2.Replace or reseat bearings.
3.Loosen , reseat and tighten chuck.
1.Clampworkpiece or work holding device to
table surface.
9
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