Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound inSquare inRound mmSquare mm
12 (3.41%)2.3582.4611.02540
12 (3.41%)2.6662.7701.02540
12 (3.41%)3.0763.1781.02540
12 (3.41%)3.3843.4871.02540
12 (3.41%)3.7943.8961.02540
12 (3.41%)4.01024.11041.02540
12 (3.41%)4.41124.51131.02540
12 (3.41%)4.71194.81221.02540
12 (3.41%)5.11305.11311.02540
12 (3.41%)5.41375.51391.02540
12 (3.41%)5.81475.81481.02540
12 (3.41%)6.21576.21571.02540
12 (3.41%)6.51656.51651.02540
12 (3.41%)6.91756.91741.02540