Belt Finder

Molded Sprocket

Series 900
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Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound in1Square inRound mm1Square mm
6 (13.40%)2.125322.2560.7519 1.0 25
9 (6.03%)3.1793.2811.02511.0, 1.52525, 40
10 (4.89%)3.5893.6910.7519 1.0, 1.5 40
12 (3.41%)4.11044.31091.5381 to 1-1/2, 1-15/16 to 2-3/161.525 to 40, 50 to 5540
17 (1.70%)5.81475.91501.5381-3/16 to 1-1/2 30 to 40
18 (1.52%)6.11556.31601.5, 1.038, 251 to 1­1/2, 1-15/16, 2-3/161.5, 2.525 to 40, 50 to 5540, 60, 65
20 (1.23%)6.81737.01781.5381 to 1-1/2, 1-15/16 to 2-3/161.5, 2.525 to 40, 50 to 5540, 60, 65

When using 1.5 in (40 mm) bore polyurethane sprockets, the belt strength for belts rated over 650 lbf/ft (9,490 N/m) is de-rated to 650 lbf/ft (9,490 N/m). When using 2.5 in (60 mm) bore polyurethane sprockets, the belt strength for belts rated over 1,100 lbf/ft (16,100 N/m) is de-rated to 1,100 lbf/ft (16,100 N/m. All other belts maintain their 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. Round bore molded and split sprockets are frequently furnished with two keyways. Use of two keys is NOT REQUIRED nor recommended. Round bore sprockets do not have setscrews for locking the sprockets in place. As with square bore sprockets, only the center-most sprocket must be locked down. 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. For more information on retaining the 2.1 in (53 mm) pitch diameter sprocket, see Retainer Rings and Center Sprocket Offset.

Series 900