Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound in1Square in2Round mm1Square mm
14 (2.51%)6.51656.31611.538 1.5, 2.5
17 (1.70%)7.92017.71961.538 2.5
22 (1.02%)10.225910.12551.5, 1.67 38, 443.52.5, 3.5 90
  1. Imperial key sizes on round bore sprockets are based on ANSI standard B17.1-1967 (R1989) and metric key sizes are based on DIN standard 6885.

  2. The 2.5 in square bore is created by using a bore adapter in the 3.5 in square bore sprocket.