Version 1.1.1 dated February 25th, 2013
Page 83
Original operating instructions
MT50
GB
11
Malfunctions
Malfunction
Cause/
possible consequences
Remedy
Noises while
working.
Spindle is running dry.
Tool is blunt or wrongly clamped.
Lubricate spindle.
Use new tool and check tension.
Tool "burns".
Wrong speed.
Chips do not come out of the drill
hole.
Blunt tool.
Working without cooling.
Select another speed, feed too high.
Retract tool more often during machining.
Sharpen tool or insert new tool.
Use coolant.
Tool tip is running off
centre, the drilled hole is
not round.
Hard fibres in the wood or the
length of the cutting spirals/or
angles on the tool are unequal.
Bent tool.
Use a new tool.
Tool is not running
smoothly or shaking.
Bent tool.
Worn out bearings on the
spindle head.
Tool is not correctly
clamped.
Defective clamping chuck.
Replace the tool.
Have the bearing replaced on the spindle
head.
Correctly clamp the tool.
Replace the clamping chuck.
It is not possible to insert
the taper into the spindle
sleeve.
Remove dirt , grease or oil at the
taper inside of the spindle sleeve
and on the taper.
Thoroughly clean the
surfaces.
Keep the surfaces free from grease.
Motor does not run
Motor is wrong connected
Defective fuse
Have the machine checked by
specialist staff.
Motor is overheating and
there is no power
Motor overloaded.
Too little mains voltage.
Motor is wrong connected.
Reduce feed eventually switch off and
have it checked by specialists.
Have it checked by specialists.
Inadequate working
accuracy
Unbalanced heavy workpiece or
workpiece akew.
Inaccurate horizontal position of
the tool holder
Clamp the workpiece mass-balanced and
stress-free.
Align tool holder.
Temperature of spindle
bearing is too high
Bearing is worn.
Bearing pretension is too high.
Working at high speed over a
longer period of time.
Replace.
Reduce bearing play of fixed bearing.
Reduce feed.
