Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound in1Square inRound mm1Square mm
62, 3 (13.40%)2.0512.0510.54140.75 20
92, 3 (6.03%)2.9742.9741.025112525
12 (3.41%)3.9994.01021.0251 to 1.51.5325 to 40403
16 (1.92%)5.11305.21321.0251 to 1.51.525 to 4040
20 (1.23%)6.41636.41631.0251 to 1.51.525 to 4040

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. Imperial 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.

  2. The 2.0 in (51 mm) pitch diameter 6 tooth sprocket and the 2.9 in (74 mm) pitch diameter 9 tooth sprocket have a recommended belt pull of 60 lbf/sprocket (267 N/sprocket).

  3. Do not use this sprocket with hold down guides.