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Chongqing Toho-Rongkee Electronic and Machinery Co.,Ltd

Add:7th Building, Shangding Industrial Park, No.22 Honghu West Road, Yubei District,Chongqing, China.




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- Jan 04, 2018 -

Lifting chain is also called lifting chain sling, lifting short link chain, it is 

composed of short chain links welded with round steel bar, and goes through 

full heat treatment and test. The lifting chain has the advantages of high 

strength, wear resistance, light weight. With strict quality assurance during 

manufacturing process,it conforms to the manufacturing standards, and 

ensure impact force, bearing capacity, tenacity and elongation of the lifting 

chain,which greatly improve its security and service life.

Usage and scope of application:  the length of lifting chain can be adjusted 

according to hoisting height of the load is essential for the crane, and the 

important fetch device plays an important role in improving operation 

efficiency and expanding work scope of the crane. It is mainly used to hoist 

and other lifting equipment, is one of the important hoisting rigging in lifting 

and traction operation. It is now widely used in the manufacturing, mining, 

transportation and other fields.

Inspect chain before each use. Between regular inspections visually check on 

a daily basis the following:

Clean chain before inspection using a non-caustic/non-acid solvent

Lubrication of the chain may be necessary if it binds up or is noisy

Chain feeds smoothly into and from the hoist and does not emit cracking 

noise when hoisting a load.

Visually examine link by link for any nicks, gouges, weld splatter, corrosion or 

distorted links, pay close attention to chain's contact points, which may show 

excessive wear.

Test hoist with load and observe operation of chain over load sheaves

It must remember to add lubricating oil to the lifting chain in time when in 

use. Lubricating oil must enter the clearance between the roller and inner 

sleeve to improve working conditions to reduce wear.

1. Wear value of chain sling allowed shall not be more than 10% of diameter 

of round steel bar or thickness of assistive devices; 

2. From the non-bending plane of  main link, if twisted more than 10 degrees 

should be discarded;

3. Any part of the chain  sling that cracks, bends or distorts, geting stuck 

between ring hinges or having phenomena of rigid and astringent resistance  

cann't be eliminated,it is prohibited to use.

4. The permanent elongation of chain and single link shall not exceed 5% of 

the original.