Lifting chains serve as essential lifting devices for cranes.

1. The tension of the hoisting chain should be appropriate. Excessive tension increases power consumption and accelerates bearing wear; insufficient tension causes chain bounce and derailment. The proper tension is achieved by lifting or depressing the chain at its midpoint, resulting in a deflection of approximately 2%-3% of the center distance between sprockets.

2. If a new lifting chain is excessively long or elongates after use, making adjustment difficult, links may be removed as needed—but only in even numbers. Links should be removed from the back of the chain, with the locking plate inserted outward and its opening facing opposite the direction of rotation.

3. Do not mix old lifting chains with partially new chains during operation, as this may cause impact during transmission and lead to chain breakage.

4. Remember to lubricate lifting chains promptly during operation. Lubricant must penetrate the clearance between rollers and inner sleeves to improve operating conditions and reduce wear.