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Precautions for the use and maintenance of lifting chains

Jun 09,2025

As an essential and important lifting device for cranes, the lifting chain can adjust the length of the chain according to the lifting height of the load, which plays an important role in improving the operating efficiency and expanding the operating range of the crane. So how should the lifting chain be repaired and maintained?

1. The tightness of the lifting chain should be appropriate. If it is too tight, it will increase power consumption and the bearings are prone to wear; Too loose chains are prone to jumping and detachment. The degree of tightness of the chain is: when lifted or pressed from the middle of the chain, the distance between the centers of the two sprockets is about 2% -3%.

2. If the new lifting chain is too long or stretched after use, it is difficult to adjust. The chain links can be removed depending on the situation, but they must be even. The chain link should pass through the back of the chain, the locking plate should be inserted outside, and the opening of the locking plate should face in the opposite direction of rotation.

3. The old lifting chain cannot be mixed with some new chains, otherwise it may cause impact and break the chain during transmission.

4. Remember to add lubricating oil to the lifting chain in a timely manner during operation. Lubricating oil must enter the clearance between the rollers and the inner sleeve to improve working conditions and reduce wear.

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