Optimum OPTIdrill DH 28BV Betriebsanleitung Seite 118

Malfunction
The drilling spindle cannot be
moved downwards.
(only DH 28 BV, DH 34 BV)
It is not possible to eject the
tool with the integrated drill
drift
(only DH 28 BV, DH 34 BV)
Temperature of spindle
bearing is too high
Working spindle rattling on
rough piece surfaces
GB
DH24BV | DH28BV | DH34BV | DH40BV
118
Cause/
possible effects
• Integrated drill drift is in the position
for ejecting
• Drill depth adjustment no released
• Integrated drill drift position No 78

„9.6 DH34BV | DH40BV -
Ersatzteilzeichnungen - Spare part
drawings" on page 144
is broken, worn out, defective
• Cylindrical pin position No.35
„9.6 DH34BV | DH40BV - Ersatzteil-
zeichnungen - Spare part draw-
ings" on page 144 is broken
• Bearing worn down
• Bearing pretension is too high
• Working at high drilling speed over
a longer period of time.
• Excessive slack in bearing
• Working spindle moves up and
down
• Clamping chuck is loose
• Tool is blunt
• Workpiece is loose
Originalbetriebsanleitung
Solution
• Pull out integrated drill drift
• Release drill depth adjustment
• Replace component
• Replace component

• replace
• Increase bearing clearance for fixed
bearing (taper roller bearing)
• Reduce drill speed and feed rate
• Reduce bearing clearance or
replace bearing
• Readjust bearing clearance (fixed
bearing)
• Check, re-tighten.
• Sharpen or replace tool
• Clamp the workpiece firmly.
Malfunctions
Version 1.1.4 - 2022-09-14