SCHUNK ROTA THW3, Assembly And Operating Manual

Page: 38 / 56

Maintenance
38 06.00 | ROTA THW3 | Power Chuck | en | 1440828
9. Screw in the air bleed screw to the stop.
For optimum grease distribution, the chuck piston must travel the
entire clamping stroke several times after lubrication.
After lubrication, check that the jaw change mechanism is working
properly.
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7.2 [
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38]
CAUTION
Allergic reactions if lubricating grease comes into contact with
the skin.
•
Wear protective gloves.
NOTICE
Malfunctions after lubricating the chuck are due to air pockets
in the system. The malfunction can be remedied by venting. To
do this, repeat steps 2, 3, 7, 8, 9.
Operating conditions
Depending on the operating conditions, the function and clamping
force must be checked after a specific period of operation (see
"Maintenance intervals"
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7.2 [
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38] ). Only perform the clamping
force test with a calibrated clamping force tester (SCHUNK IFT).
7.2 Technical condition
With the smallest possible actuating pressure (hydraulic cylinder),
the base jaws should move evenly. This method only provides a
limited indication and is not a substitute for measuring the
clamping force. If the clamping force has dropped too much or if
the base jaws and piston no longer move properly, the chuck has
to be disassembled, cleaned and relubricated.
Only use original SCHUNK spare parts when replacing damaged
parts.