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Lifting chain Maintenance and judgment of scrapping

2019-06-28 16:27:57

1. Sprockets should be installed on axles without skewing or swinging. In the same transmission assembly, the end faces of two sprockets should be located in the same plane. When the center distance of sprockets is less than 0.5 meters, the allowable deviation is 1 mm; when the center distance of sprockets is more than 0.5 meters, the allowable deviation is 2 mm. But there is no side phenomenon of friction sprocket teeth. If the two wheels move too much, it will easily lead to chain-breaking and accelerated wear. When replacing sprockets, attention must be paid to checking and adjusting the offset.


2. Lifting chain should be suitable for tightness, too tight to increase power consumption, bearing wear easily; too loose chain is easy to jump and release. The degree of elasticity of the chain is: lifting or pressing from the middle of the chain, the center distance of the two sprockets is about 2% - 3%.


3. The new lifting chain is too long or elongated after use, which is difficult to adjust. It can be disassembled according to the situation, but it must be even. Chains should be passed through the back of the chain, the lock piece is inserted outside, and the opening of the lock piece should be in the opposite direction of rotation.


4. New sprockets and chains should be replaced at the same time to ensure good meshing after severe wear and tear of sprockets. New chains or sprockets should not be replaced alone. Otherwise, it will cause bad meshing to accelerate the wear of new chains or sprockets. When the sprocket tooth surface is worn to a certain extent, it should be turned over in time (refers to sprocket with adjustable surface). To extend the use time.


5. Old lifting chains can not be mixed with some new chains, otherwise it is easy to produce impact in transmission and break chains.


6. The lifting chain should be filled with lubricant in time. The lubricant must enter the mating clearance between the roller and the inner sleeve in order to improve working conditions and reduce wear.


Lifting Chain scrap judgment

1. The allowable wear value of the suspension chain shall not exceed 10% of the diameter of the bar or the thickness of the accessories of the ring chain.

2. From the plane where the main ring is not bent, the main ring is distorted more than 10 degrees and should be scrapped.

3. Cracks occur at any part of the chain, bending or twisting and stuck or rigid retardation between the rings and hinges, which can not be excluded.

4. The permanent elongation of the chain and the single ring shall not exceed 5% of the original length.

GIDI CHAIN LIMITED supply lots of roller chain, conveyor chain, Leaf Chain, welded chain, forged chain, Palm Oil Mill Chain, Hoisting Chain,Mine and Metallurgy Chain, etc. totaling over 3000 varieties. and 90% of chains are exported to worldwide, Which mainly export to Southeast Asia, European, North America, South America. Chains are welcomed by customers with the excellent quality. Our company owns more than 100 sets of advanced and professional manufacturing equipment, Perfect and rigorous QC system is implemented in every process from material purchasing to finished products packaging. Also, we have passed the ISO9001: 2015 Quality Management System Certification.

More Detail : www.gidi-chain.com