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1VP25 Pulley 1VP30 Pulley 1VP34 Pulley 1VP40 Pulley 1VP44 Pulley
1VP50 Pulley 1VP56 Pulley 1VP60 Pulley 1VP62 Pulley 1VP65 Pulley
1VP68 Pulley 1VP71 Pulley 1VP75 Pulley 2VP36 Pulley 2VP42 Pulley
2VP52 Pulley 2VP56 Pulley 2VP60 Pulley 2VP62 Pulley 2VP65 Pulley
2VP68 Pulley 2VP71 Pulley 2VP75 Pulley

Variable Pitch Pulleys

Variable pitch pulleys are used in applications that need drive speed refinements such as fans, blowers, pumps, and many more applications. Our pulleys are easy to install, allow mechanical drive speed variation, and are easy to adjust. Adjustments are achieved from the threaded angular faced discs which form the V-shaped groove, adjusting the distance such as moving the discs towards each other makes the belt ride higher increasing the pitch diameter, which in-turn increases drive speed. Of course, moving the discs apart decreases the diameter and drive speed. These pulleys are proven especially useful in applications where speed adjustments are needed to meet certain requirements.

Variable Pitch Pulley Size Charts

Single-Groove Variable Pitch Pulleys

Size
Type
Outside Diameter
F (max)
F (min)
G (max)
G (min)
(L)
(K)
Weight (LBS)
1VP25 1 2.50" 13/16" 9/16" 5/8" 3/8" 1-1/2" 5/8" 0.7
1VP30 1 2.87" 13/16" 9/16" 5/8" 3/8" 1-21/32" 19/32" 1.1
1VP34 1 3.15" 1" 11/16" 13/16" 1/2" 1-7/8" 21/32" 1.4
1VP40 1 3.75" 1-1/16" 11/16" 7/8" 1/2" 1-7/8" 21/32" 1.9
1VP44 1 4.15" 1-1/16" 11/16" 7/8" 1/2" 1-7/8" 21/32" 2.4
1VP44 2 4.15" 1-1/8" 3/4" 7/8" 1/2" 2" 11/16" 2.9
1VP50 1 4.75" 1-1/16" 11/16" 7/8" 1/2" 1-7/8" 25/32" 2.9
1VP50 2 4.75" 1-1/8" 3/4" 7/8" 1/2" 1-7/8" 11/16" 3.6
1VP56 1 5.35" 1-1/16" 11/16" 7/8" 1/2" 1-7/8" 21/32" 3.8
1VP56 2 5.35" 1-1/8" 3/4" 7/8" 1/2" 1-7/8" 11/16" 4.4
1VP60 2 6.00" 1-1/4" 7/8" 1-1/32" 21/32" 1-21/32" 7/16" 6.5
1VP62 2 5.95" 1-1/8" 3/4" 7/8" 1/2" 1-29/32" 21/32" 6.1
1VP65 2 6.50" 1-1/4" 7/8" 1-1/32" 21/32" 1-21/32" 7/16" 6.8
1VP68 2 6.55" 1-1/8" 3/4" 7/8" 1/2" 1-29/32" 21/32" 7.3
1VP71 2 7.10" 1-1/4" 7/8" 1-1/32" 21/32" 1-21/32" 7/16" 8.2
1VP75 2 7.50" 1-1/4" 7/8" 1-1/32" 21/32" 1-21/32" 7/16" 9.2
Note: Additional information on product pages.

Double-Groove Variable Pitch Pulleys

Size
Type
Outside Diameter
F (max)
F (min)
G (max)
G (min)
(L)
(K)
Weight (LBS)
2VP36 4 3.35" 2" 1-3/8" 13/16" 1/2" 3" 1-3/16" 3.4
2VP42 4 3.95" 2-1/8" 1-3/8" 7/8" 1/2" 3" 1-3/16" 4.4
2VP52 5 4.75" 2-1/8" 1-3/8" 7/8" 1/2" 3" 1-3/16" 6.3
2VP56 5 5.35" 2-1/8" 1-3/8" 7/8" 1/2" 3" 1-3/16" 7.8
2VP60 5 6.00" 2-3/8" 1-5/8" 1/32" 21/32" 3-1/4" 1-1/4" 10.6
2VP62 5 5.95" 2-1/8" 1-3/8" 7/8" 1/2" 3" 1-3/16" 10.0
2VP65 5 6.50" 2-3/8" 1-5/8" 1-1/32" 21/32" 3-1/4" 1-1/4" 12.3
2VP68 5 6.55" 2-1/8" 1-3/8" 7/8" 1/2" 3" 1-3/16" 11.7
2VP71 5 7.10" 2-3/8" 1-5/8" 1-1/32" 21/32" 3-1/4" 1-1/4" 14.6
2VP75 5 7.50" 2-3/8" 1-5/8" 1-1/32" 21/32" 3-1/4" 1-1/4" 16.5
Note: Additional information on product pages.

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