The chain of a chain hoist may become longer due to various factors, and the following are some of the main reasons:

1. Elastic elongation of the chain

Material properties: Chains are usually made of metal, which has a certain degree of elasticity. During long-term use, the length of the chain may increase due to elastic elongation due to the tensile force it is subjected to.

Temperature effect: Changes in temperature may also affect the length of the chain. For example, in high-temperature environments, chain materials may become longer due to thermal expansion.

2. Wear and tear of the chain

Accumulated wear: The chain will constantly rub against components such as pulleys and sprockets during lifting operations, resulting in surface wear of the chain. Long term wear will reduce the diameter of the chain, resulting in a certain elongation effect in length.

Chain link deformation: Wear may also cause chain link deformation, resulting in changes in the overall length of the chain.

3. Improper operation or maintenance

Overload use: If the chain hoist is subjected to a weight exceeding its rated load for a long time, the chain may become longer due to excessive stretching. In addition, overloading may also lead to accelerated wear and deformation of the chain.

Lack of lubrication: The lack of necessary lubrication in the chain can lead to increased friction, accelerating the wear process and causing the chain to become longer.

Improper maintenance: Failure to regularly inspect, clean, and lubricate the chain can also accelerate its wear and tear, leading to its elongation.

4. Design and manufacturing defects

Improper material selection: If the manufacturing material quality of the chain is not up to standard or does not meet the design requirements, its wear resistance, fatigue resistance and other properties may be affected, leading to the chain being prone to elongation during use.

Process issues: In the manufacturing process of the chain, if the process control is not strict or there are defects (such as improper heat treatment, poor welding quality, etc.), it may also cause the chain to elongate during use.

5. Chain aging

Material aging: Over time, the chain material may lose its original mechanical properties (such as elasticity, strength, etc.) due to aging, leading to the chain becoming longer during use.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment