Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound inSquare inRound mmSquare mm
16 (1.92%)3.1793.1791.025 1.5 40
18 (1.52%)3.5893.5891.025 1.5 40
24 (0.86%)4.61174.71191.025 1.5, 2.5 40, 60
32 (0.48%)6.11556.21571.025 1.5, 2.5 40, 60