Maintenance
03.00|1341130_ROTA NCR-A |en
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Lubrication
To maintain the safe function and high quality of the power chuck
it is important to lubricate it regularly at the greese nipples (item
90).
Lubricate the chuck without a workpiece, with the base jaws in
the fully closed position.
For optimum grease distribution, the clamping piston must travel
the entire clamping stroke several times after lubrication.
Chuck size
190
225
250
315
400
500
630
800
1000
No. of grease-gun strokes
6
8
10
12
16
20
25
30
30
Operating Conditions
Depending on operating conditions, check the function and the
clamping force after a certain time of operation (see chapter
"Maintenance intervals"
). Measure the clamping
force only by using a calibrated Grip Force Tester (SCHUNK SGT
270).
Technical Condition
The base jaws must move evenly at the smallest possible operating
pressure (cylinder). This method is only to some extend expressive
and cannot replace clamping force measurement.
If clamping force has dropped too low, or if base jaws and piston
cannot be moved perfectly, it is necessary to disassemble the
chuck to clean it and to relubricate it.
Use original SCHUNK spare parts only when exchanging damaged
parts.
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