Jul. 30, 2025
1. Proper lubrication ensures the lathe chuck maintains excellent precision even after extended use. However,
improper or inappropriate lubrication can lead to problems such as malfunction at low pressure, reduced clamping force,
poor clamping accuracy, abnormal wear, and seizure. Therefore, proper chuck lubrication is essential.
2. Apply molybdenum disulfide grease (black in color) to the chuck grease nipple at least once daily until it overflows onto the jaw surfaces or the chuck inner bore
(between the inner bore protection sleeve and the connecting nut).
If the chuck rotates at high speeds or uses large amounts of water-based cutting oil, more lubrication may be required; t
his should be determined based on the specific situation.
3. After operation, always clean the chuck body and slide surfaces with an air gun or similar tool.
4. Disassemble the chuck every six months, clean it (keep the jaw sliding surfaces clean), and lubricate it.
If cutting cast iron, thoroughly clean it at least once or more every two months and inspect all parts for cracks and wear.
(Extremely worn areas should be replaced immediately.) After inspection, fully oil the machine before assembly.
5. Use different clamping methods or custom fixtures for different workpieces. (Three-jaw chucks are only general-purpose fixtures.
Forcibly using them to clamp irregular or unusual workpieces can damage the chuck.)
Abnormal chuck pressure can cause the chuck to be under high pressure, or the chuck may retain the workpiece even after the machine is turned off,
shortening the chuck's lifespan. Therefore, if the chuck clearance is excessive, replace it immediately.
6. Use rust-proof cutting oil to prevent rust from forming inside the chuck,
as rust can reduce the clamping force and prevent the workpiece from being firmly clamped.
