The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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Hexadrive Series-2
Models 21901, 21902, 21903 Spring-Loaded Driver Pulleys - Imperial-2
Unit of Measure
1 

Part Number

Description 

Bore Diameter 

Keyway Size 

Type

Max. Pitch Diameter (Dimension PD)

Ratio

UPC Number

68514421139 N/A 21903-3/4-PULLEY N/A 3/4 in N/A 3/16 x 3/32 in N/A Adjustable Center - Driver N/A 8.030 in N/A 3:1 N/A 21139
68514421141 N/A 21903-7/8-PULLEY N/A 7/8 in N/A 3/16 x 3/32 in N/A Adjustable Center - Driver N/A 8.030 in N/A 3:1 N/A 21141
68514421142 N/A 21903-1"-PULLEY N/A 1 in N/A 1/4 x 1/8 in N/A Adjustable Center - Driver N/A 8.030 in N/A 3:1 N/A 21142
68514421143 N/A 21903-1-1/8-PULLEY N/A 1 1/8 in N/A 1/4 x 1/8 in N/A Adjustable Center - Driver N/A 8.030 in N/A 3:1 N/A 21143
68514437323 N/A 21903-5/8-PULLEY N/A 5/8 in N/A 3/16 x 3/32 in N/A Adjustable Center - Driver N/A 8.030 in N/A 3:1 N/A 37323
Unit of Measure
1