Our company specializes in the production of various accessories such as lifting chains, ring chains, hoist chains, hoisting chains, fishing net chains, dock chains, and anchor chains. Let's take a look at how to measure the elongation of the lifting chain in detail today.
First, in order to remove the clearance of the entire lifting chain, it is necessary to measure under a certain degree of pulling tension on the lifting chain.
Second, in order to minimize the error when measuring, measure at 6-10 knots (link).
Third, measure the inner L1 and outer L2 dimensions between the rollers of the number of pitches to find the judgment dimension L=(L1+L2)/2
Fourth, find the elongation length of the lifting chain. This value is compared with the use limit value of the lifting chain elongation in the previous paragraph.
Lifting chain elongation = judgment size-reference length / reference length * 100%
Reference length = chain pitch * number of sections
