Malfunctions
Version 1.0.4 - 2020-08-04 101Translation of original instruction
MT60 EN
MT60_GB_6.fm
8 Malfunctions
Malfunction Cause/
possible effects
Solution
Noise during work. Spindle runs dry.
Tool blunt or incorrectly clamped.
Grease spindle
Use new tool and check clamping.
Tool "burnt". Incorrect speed.
Chips are not coming out of the
drilled hole.
Blunt tool.
Operating without cooling agent.
Choose a different speed, excessive
feed.
Retract tool more often during work.
Sharpen or replace tool.
Use coolant.
Tool running off-centre
or "hopping"
Tool deformed
Bearings worn down in the spindle
head.
Tool badly clamped.
Defective clamping chuck.
Replace the tool.
Have the bearings in the spindle head
replaced.
Clamp the tool properly.
Replace the clamping chuck.
Taper cannot be inserted
in quill.
Remove any dirt, grease or oil from
the internal conical surface of the
spindle sleeve or the taper.
Clean surfaces well.
Keep surfaces free from grease.
Motor does not start. Motor is wrongly connected.
Defective fuse.
Have it checked by qualified
personnel.
Motor is overheating and
there is no power.
Motor overloaded.
Insufficient mains voltage.
Motor wrong connected.
Reduce feed, disconnect if necessary
and have it checked by authorised
personnel.
Have it checked by authorised
personnel.
Precision of the work
deficient.
Heavy and unbalanced or
deformed work-piece.
Inexact horizontal position of the
work-piece holder.
Balance the piece statically and
secure without straining.
Adjust workpiece-holder.
Spindle bearing
overheating.
Bearing worn down.
Bearing pretension is too high.
Working at high speeds for a long
time.
Replace.
Reduce bearing clearance in the fixed
bearing.
Reduce feed rate.
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