Optimum BF16 Vario Modification Instructions page 37

Modification BF20 to a ball bearing spindle
CAUTION!
If you do not press on the bushing
with enough force, the balls may fall
off the nut. Then the nut becomes
unserviceable!
Have the nut slide on the spindle.
CAUTION!
Please make sure that the machine faced side of the bushing is placed onto the spindle!
The nut has to run on the spindle by
itself.
Turn the nut clockwise on the
spindle. If the nut does not run
smoothly, just turn it back and try
again.
CAUTION!
Do not force the nut downward, as it
would be destroyed!
INFORMATION
If you need the lubricating nipple after
assembly at the other side of the nut,
you have to remove the relief from the
aluminium bushing.
Place the nut with the machine
faced side onto the spindle.
Assemble the nut on the spindle as
described above.
Remove the relief.
Re-assemble the nut.
Turn the nut by 180° and re-
assemble it as described above.
03 / 08 / 2006 Ball bearing spindle assembly and maintenance instruction ; Version 1.4.7
OPTIMUM
M A S C H I N E N - G E R M A N Y
Aluminum bushing
Nut
Spindle
Illustr.6-34: Screw-on the spindle
Aluminum bushing
Nut
Spindle
Illustr.6-35: Screw-on the spindle
Lubricating nipple
Nut
Aluminum bushing
Relief
Illustr.6-36: Remove relief
Page 38