Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound in1Square inRound mm1Square mm
6 (13.40%)4.01023.8971.5381.01.53040
8 (7.61%)5.21325.01271.5381.01.53040
10 (4.89%)6.51656.21571.538 1.5 40
12 (3.41%)7.71967.51911.538 1.5 40
16 (1.92%)10.326210.12571.538 1.5 40

When using polyurethane sprockets, the belt strength for belts rated over 750 lbf/ft (10,900 N/m) is de-rated to 750 lbf/ft (10,900 N/m). All other belts maintain the published rating. The temperature range for polyurethane sprockets is 0°F to 120°F (-18°C to 49°C). Contact Intralox Customer Service for availability of polyurethane sprockets.

  1. U.S. 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.