Discover the New “My Dashboard” Experience

Join Eric Stasiowski, manager – online marketing & ecommerce, to see how you can save key items like documents, bearings, and distributor locations directly to your account.

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Analyze Bearing Performance in an Application with Timken ® Syber ® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

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Simplified Gear Force Analysis

Alex Waye, Timken Application Engineer, shows you how to instantly compute tangential, radial, and axial forces for better design decisions.

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Unit of Measure
Items
Hexadrive Series

Model 11903 Spring-Loaded Driver Pulleys - Imperial

Hexadrive Series

Model 11903 Spring-Loaded Driver Pulleys - Imperial

Hexadrive Series

Model 11903 Spring-Loaded Driver Pulleys - Imperial

Hexadrive Series

Model 11903 Spring-Loaded Driver Pulleys - Imperial

Hexadrive Series

Model 11903 Spring-Loaded Driver Pulleys - Imperial
Description  N/A 11903-5/8-PULLEY N/A 11903-3/4-PULLEY N/A 11903-7/8-PULLEY N/A 11903-1"-PULLEY N/A 11903-1-1/8-PULLEY
Bore Diameter  N/A 5/8 in N/A 3/4 in N/A 7/8 in N/A 1 in N/A 1 1/8 in
Keyway Size  N/A 3/16 x 3/32 in N/A 3/16 x 3/32 in N/A 3/16 x 3/32 in N/A 1/4 x 1/8 in N/A 1/4 x 1/8 in
Model N/A 11903
Type N/A Adjustable Center - Driver
Belt Size N/A 1922V
Width N/A 2.500 in
Outside Diameter N/A 8.250 in
Max. Pitch Diameter (Dimension PD) N/A 8.030 in
Min. Pitch Diameter (Dimension PD) N/A 2.700 in
Overall Length N/A 5.380 in
Ratio N/A 3:1
Weight N/A 12.10 lb
Torque Capacity N/A 108.00 in·lb
Motor Power at 1,150 rpm N/A 2.00 hp
Motor Power at 1,750 rpm N/A 3.00 hp
UPC Number N/A 20826 N/A 20827 N/A 20828 N/A 20830 N/A 20831
Cubic inches N/A 366.17625 in³