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Smarter Bearing Selection Is Here

The Timken ® Syber ® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.

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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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Unit of Measure

Specifications

Description 

 N/A 21903-7/8-PULLEY

Model

 N/A 21903

Type

 N/A Adjustable Center - Driver

Belt Size

 N/A 1922V

Ratio

 N/A 3:1

Weight

 N/A 13.38 lb

UPC Number

 N/A 21141

Dimensional Data

Bore Diameter 

 N/A 7/8 in

Keyway Size 

 N/A 3/16 x 3/32 in

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 6.750 in

Cubic inches

 N/A 459.42188 in³

Performance Data

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
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