Version 1.2.8 - 2020-08-03
82
Translation of original operating manual
MT50
GB
MT
5
0_GB
_6.
fm
8
Malfunctions
Malfunction
Cause/
possible effects
Solution
Noise during work
Spindle turning dry
Tool blunt or incorrectly secured
Grease spindle
Use new tool and check securing (fixed
setting of the bit, bit-holder and conical
chuck).
Tool "burnt".
Incorrect speed.
Chips do not come out of the bore
hole.
Tool blunt.
Operating without cooling agent.
Select another rate, feed too high.
Retract tool more often during machining.
Sharpen or replace tool.
Use cooling agent
Bit tip moves, bore is not
circular
Hard fibre in the wood or unequal
length of the cutting spiral or
angles in the bit
Tool deformed
Replace tool
Tool running off-centre
or "hopping"
Tool deformed
Bearings worn down in the spindle
head
Spindle head
Tool badly secured
Defective clamping chuck
Replace tool
Have the bearings in the spindle head
replaced
Secure the tool properly
Replace the clamping chuck
Impossible to insert
holding taper into the
spindle sleeve.
Remove any dirt, grease or oil from
the internal conical surface of the
spindle sleeve or the grip cone.
Clean surfaces well.
Keep surfaces free of grease.
Motor does not start
Motor is wrongly connected
Defective fuse
Have it checked by authorised personnel.
Motor is overheating and
there is no power
Motor overloaded
Insufficient mains voltage
Motor badly 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
part 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
