Basic safety instructions
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02.00|ROTA NCK plus |en
Maintenance instructions
The chuck's reliability and safety can only be guaranteed if the op-
erator complies with the manufacturer's maintenance instructions.
• For lubrication, we recommend our tried and tested special
grease, LINOMAX. Unsuitable lubricants can have a negative
impact on the functioning of the chuck (clamping force, coeffi-
cient of friction, wear characteristics).
(For product information about LINOMAX, see the "Accesso-
ries" chapter of the SCHUNK lathe chuck catalog or contact
SCHUNK).
• Use a suitable high-pressure grease gun to ensure that you
reach all the greasing areas.
• To ensure correct distribution of the grease, move the clamping
piston to its end positions several times, lubricate again, and
then check the clamping force.
• We recommend checking the clamping force using a clamping
force tester before starting a new production run and between
maintenance intervals. "Only regular checks can guarantee op-
timal safety."
• The clamping force should always be measured in the state of
the chuck as used for the current clamping situation. If top jaws
with clamping steps are used, measuring must be performed in
the same step as for the respective clamping task. In the event
of high operating speeds, clamping force losses must be ac-
counted for due to the centrifugal force acting on the chuck
jaws. The operating clamping force must in this case be deter-
mined by means of dynamic measurement.
• Move the clamping piston through to its end position several
times after 500 clamping strokes, at the latest. (This moves the
lubricant back to the surfaces of the force transmission. This
means that the clamping force is retained for longer).
Safety notes for servicing
Follow all the applicable legal norms for health and safety during
servicing. Use suitable personal protective equipment, especially
protective gloves, goggles and safety boots, paying particular at-
tention to the operating system and hazard assessment.
