The tolerance of compression springs

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keyword: compressionsprings; tolerance; tolerancestandard

Question Ichikawa 2006/7/1(Sat) 23:11

I am forever indebted to Mr. Manabe in the Sales Department for his help!
What I would like to ask this time is the tolerance of compression springs. How much tolerance does Tokai Spring have? I think that there is a tolerance standard stated in ISO, but could you tell me the tolerance of the outer diameter, coil mean diameter, free length in %, or even +-mm is okay too.

Answer Tokai Spring 2006/7/3(Mon) 14:38

Thank you for writing Mr. Ichikawa!
Our standards are based on JIS B2704 (Compression and tension coil spring design and performance test method). For cold-formed compression coil springs, tolerances such as coil diameter and free height are specified in grades 1 to 3, so we would appreciate it if you could refer to JIS B2704!

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