0850/0850-T1 User Manual
Matrix Machine Tool (Coventry) Limited 208 / 231
22.11 Power Chuck maintenance
Regular maintenance of the power chuck is necessary dependent upon its usage. Lubricate all
lubricating points for every 20 hours of operation heavy soling every 8 hours.
Centering adapter mounting screw
1. To maintain its reliability and high quality, the chuck must be lubricated at the 3 grease nipples at
regular intervals. After lubrication, move the clamping piston several times over its full stroke in
order to distribute the grease more evenly. Then lubricate again.
2. Performance and clamping force must be checked after some time, depending on the conditions of
use. The most reliable method of measuring the clamping force is by means of a load cell.
3. Performance check: The clamping piston must move when the lowest possible actuating pressure
of 3-4 bar is applied. However, this method is not reliable enough to serve as a substitute for the
clamping force measurement.
If the clamping force has dropped substantially or if the clamping piston can no longer be moved with
ease, the chuck must be disassembled, cleaned and re-lubricated.
4. Maintenance intervals: Depending on the conditions of use, but not later than after the specified
periods. We recommend using Rohm special grease F80.
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