Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound inSquare inRound mmSquare mm
8 (7.61%)5.21325.01271.743 1.5, 2.5 40, 60
10 (4.89%)6.51656.21571.743 1.5, 2.5 40, 60
12 (3.41%)7.71967.51911.743 1.5, 2.5 40, 60
16 (1.92%)10.326210.12571.743 1.5, 2.5 40, 60