Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound in1Square inRound mm1Square mm
6 (13.40%)2.0511.8461.0251.0 25
10 (4.89%)3.2813.2811.0251.01.52540
12 (3.41%)3.9993.8971.025 1.5 40
20 (1.23%)6.41636.41631.025 1.5 40

When using polyurethane sprockets, the belt strength for belts rated over 500 lbf/ft (7,300 N/m) is de-rated to 500 lb/ft (7,300 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.