Optimum OPTIdrill DP 26 Operating Instructions Manual page 29

Interval Where?
in case of need
Every 6
months
Maintenance
Version 1.0.2 - 2020-07-07
What? How?
Any unusual
regreasing. The sleeve (1) moves downwards or upwards
with the toothed spindle (2) in the fixed driven sleeve (3)
during drill feed. The noises are caused by the necessary
clearance between the two toothings of the sleeve and
spindle. The grease in the delivery condition may have been
used up.
2
1
Img.5-1:
Regreasing is carried out from above via the spindle drive.
Apply grease at the visible toothed area of the spindle. It is
recommended
permanently inside the toothing. The grease "Staburag NBU
30 PTM" from Klüber is recommended and has proved to be
a successful assembly grease for clearance fits.
Check the electrical equipment / parts of the drilling machine.

"Qualification" on page 8
Testing
Translation of original instructions
rattling noises can be
3
2
3
to use a grease which
eliminated by
can remain
DP26 EN
29