Optimum 3034252, Руководство по эксплуатации, Страница: 51 / 84

Malfunctions
Version 1.0.2 - 2020-07-06 51 Translation of original instruction
DH35V EN
DH
35
V
_
G
B
_
8.f
m
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.
• Replacing
• Increase bearing clearance for fixed
bearing (taper roller bearing)
• Reduce drill speed and feed rate
Rattle the spindle if the
workpiece 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