201
4
US
Page 65
22 / 07 / 2014
Version 1.0.3
B50 GSM
Geared drill
OPTIMUM
M A S C H I N E N - G E R M A N Y
Troubleshooting
8
Troubleshooting
Problem
Cause / possible effects
Solution
Noise during work
•
Spindle turning dry
•
Tool dull incorrectly secured
•
Grease spindle
•
Use new tool and check secu-
ring (fixed setting of the bit, drill
chuck and conical chuck).
Bit “burnt“
•
Incorrect speed
•
The chips have not been remo-
ved from the bore hole
•
Bit dull
•
Operating without cooling agent
•
Select another rate, feed high
•
Extract bit more often
•
Sharpen or replace bit
•
Use cooling agent
Bit tip moves, bore is not
circular.
•
Hard material in the workpiece
•
Unequal length of the cutting spi-
ral or angles in the bit
•
Bit deformed
•
Replace bit
Defective bit
•
No support used
•
Place a wooden board beneath
the piece and secure them to one
another
Bit running off-centre or
“hopping“
•
Bit deformed
•
Bearings worn in drilling head
•
Bit badly secured
•
Defective bit-holder
•
Replace bit
•
Have the bearings in the drilling
head replaced
•
Secure the bit properly
•
Replace the bit-holder
Impossible to mount drill
chuck
•
Dirt, grease or oil on the inner
taper surface of thedrilling head
spindle
•
Clean surface well
•
Keep surface free of grease
Motor does not start
•
Motor badly connected
•
Defective fuse
•
Have it checked by authorised
personnel
Overheating of the motor
and lack of 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 defor-
med part
•
Inexact horizontal position of the
part holder
•
Balance the piece statically and
secure without straining
•
Adjust part-holder
Drilling spindle does not
return to initial position
•
Failure of spindle return spring
•
Locking bolt inserted
•
Check spindle return spring and
replace if necessary
•
Remove locking bolt
Impossible to move the
drilling spindle down-
wards
•
Locking bolt inserted
•
Drill depth adjustment no
released
•
Pull out locking bolt
•
Release drill depth adjustment
Spindle bearing over-
heated
•
Bearing worn
•
Excessive preloading of the
bearing
•
Working at high rate for a long
time
•
Replace
•
Reduce bearing slack for fixed
•
Reduce bit speed/feed
