Malfunctions
Version 1.0.2 dated 2018-03-02 Page 66 Translation of the original instructions
DH45VGB
DH45V_GB_8.fm
OPTIMUM
MASCHINEN - GERMANY
®
Drilling spindle sleeve does
not return to its initial position
• Spindle return spring does not work • Check spindle return spring, replace
it, if necessary
The drilling spindle cannot be
moved downwards.
• Integrated drill has been swiveled
inwards
• Drill depth adjustment no released
• Swivel integrated drill drift out
• Release drill depth adjustment
Spindle bearing overheating • Bearing worn down
• Bearing pretension is too high
• Working at high drilling speed over
a longer period of time.
• Replace
• Increase bearing clearance for fixed
bearing (taper roller bearing)
• Reduce drill speed and feed rate
Rattle the spindle if the work-
piece surface is rough.
• Excessive slack in bearing.
• Spindle moves up and down
• Clamping chuck is loose
• Tool is blunt.
• Workpiece is loose
• Reduce bearing clearance or
replace bearing
• Readjust bearing clearance (fixed
bearing)?
• Check, re-tighten
• Sharpen or renew the tool.
• Clamp the workpiece firmly.
Malfunction
Cause/
possible effects
Solution
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