Three-jaw chuck is a common clamping device on lathes, but sometimes after using it for a period of time, it will be found that the accuracy of the chuck deviates, and even the workpiece is not clamped tightly.

When these phenomena appear on the chuck, it may be that the chuck is damaged. So what is the reason for the damage of the three-jaw chuck? What are the reasons?

Generally speaking, there are several reasons:

1. The long-term use of the chuck causes the wear of the base jaws and grooves.

2. The jaws of the chuck have worn unevenly from use.

3. There are impurities or iron filings inside the chuck.

4. The chuck is not well lubricated.

5. The chuck is damaged due to improper use of the machine tool.

The working principle of the hydraulic three-jaw chuck is to control the clamping and loosening of the chuck through the entire hydraulic system. In this high-strength, high-speed and long-term operation, if the hydraulic chuck is not maintained, the chuck will be under load. . Among the five causes of chuck damage mentioned above, the first four are all related to improper or untimely refueling. Therefore, the correct refueling of the hydraulic three-jaw chuck is to maintain the clamping accuracy and service life of the hydraulic chuck, reduce processing errors, and improve production efficiency.

Three-jaw chuck refueling precautions:

1. The chuck must be removed for a thorough cleaning at least every 6 months.

2. If cutting iron filings, clean it thoroughly at least once or more every 2 months.

3. Check all parts for damage and wear, and replace them with new ones in time.

4. After the inspection is completed, it must be fully oiled before assembly.