OPTIMUM
M A S C H I N E N - G E R M A N Y
Operation
Version 1.0 dated 2017-03-13
Page 36
Original operating instructions
RD4
GB
R
D
4_
GB
_4.
fm
Img.3-6: Drill depth
3.12
Disassembly, assembly of drill chucks and drill bits
CAUTION!
Make sure that the clamped tool is firmly and correctly fitted.
3.12.1 Fitting the drill chuck
The drill chuck or the tool is secured in the drill spindle against turning over by means of a form-
locking connection.
A frictionally engaged connection keeps and centres the drill chuck or the drill in the drill spin-
dle.
Check and, if necessary, clean the conical seat in the drilling spindle and at the taper man-
drel of the tool or the drill chuck.
Press the taper mandrel into the drill spindle.
3.12.2 Unfitting the drill chuck
Set the step switch to the neutral central position.
Switch off the master switch.
Turn the spindle by hand until the ejection openings are over each other.
Zero marker
Scale
Marking boring depth
Dial disc
Clamping lever
Drill depth vernier