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Test methods for chain

Cable length measuring accuracy according to the following requirements

 

1. measuring chain after cleaning and before  

2. will be measured on a chain around the two sprocket, top and bottom edges of the chain to be measured should be supported

3. before the measurement chain should be imposed in three per cent notwithstanding the minimum ultimate tensile load travel 1min  

4. when measuring under measuring load imposed on the chain, above and below the chain tensioning. chain sprocket should ensure normal tooth

5. measurement of Center distance between two chain wheels

  

measuring chain elongation:

1. to remove the chain clearance, to exert a certain degree of pulling on the chain under tension measuring   

2. the measurement, in order to minimize the error in the 6-10 section (link) of measuring  

3. measuring the number of rollers inside between L1 and L2 size in order to determine the size L= (L1+L2)/2 

4. the elongation of the chain length is obtained, the value and limits the use of chain elongation values in contrast to the preceding paragraph shall

elongation of the chain size = judgment-base/base length *100%  length;

base length = chain pitch number *

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