Roller Chain Selection Calculator

Calculate chain speed, power rating, and recommended chain size for roller chain drives.

Number of teeth on the driving sprocket. Minimum recommended: 17 teeth.
Number of teeth on the driven sprocket. Max ratio typically 7:1.
Distance between roller centers. Standard: 6.35(25), 9.525(35), 12.7(40), 15.875(50), 19.05(60) mm.
mm
Rotational speed of the driving sprocket.
RPM
The working load the chain must transmit.
kN

Results

Chain Speed-m/s
Speed Ratio-:1
Transmitted Power-kW
Recommended Chain-
Chain Length (1m center dist)-pitches
References: ANSI B29.1 — Roller Chains, ASME chain drive design standards.