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Calculate chain length: roller chain calculator

Number of links and chain length for a two-sprocket drive with roller chain to ISO 606 – series B (European type, formerly DIN 8187) or series A (American type, formerly DIN 8188).

Number of links X
–
Chain length
–
Centre distance with X links
–
Ratio i
–
Pitch circle d₁
–
Pitch circle d₂
–

Disclaimer: the calculator provides non-binding guide values for preliminary design using the standard formula. It does not replace a design by specialists and does not take load, speed, lubrication or installation into account. No liability is accepted for the results or their use; the chain manufacturer’s data and our quotation are authoritative.

Formula

X = 2a/p + (z₁ + z₂)/2 + ((z₂ − z₁)/2π)² · p/a, pitch circle diameter d = p / sin(180°/z). The results are guide values for preliminary design; we are happy to check sag, tensioning travel and installation with you.

Have your design checked?

Send us the values – we recommend chain, sprockets, tensioner and guide from a single source.

Use values in an inquiry

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