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Variable Speed Pulleys

Variable speed pulleys offer the possibility of changing the speed using a V-belt or variator – wide V-belt. It is made of gray cast iron or aluminum alloy.

With a Fixed Speed Setting

For SPZ, 10/Z, SPA, 13/A, SPB, 17/B belts
Diameter Dm (mm): 84 – 187
Stand. shaft diameters d (mm): 10 – 50

Symmetrical with Variable Speed Adjustment

For power transmitted by variator belts up to 160 kW
Diameter Dm (mm): 91.4 – 596.0
Stand. shaft diameters d (mm): 14 – 100

Asymmetrical with Variable Speed Adjustment (BECKER)

For power transmitted by variator belts up to 150 kW
Diameter Dm (mm): 125 – 560
Stand. shaft diameters d (mm): 20 – 85

Pulleys Fields of Use

Variable speed pulleys are intended for transmissions with a change in speed, in which the transmission is realized by a variator or V-belt.

Typical use is in the repair of older agricultural machinery or conveyors in the ceramic and woodworking industries, or simply in machines where the speed change is mechanically controlled, especially in presses, single-purpose machines and other applications.

Nowadays, they are very often replaced by another solution for setting the required revolutions.

Pulleys Material

Gray cast iron or aluminum alloy.

Documents for Download

Dimensions and Parameters of Variable Speed Pulleys for Taper Lock Bushes

TYMA CZ Data Sheets

Czech and English (PDF 317.17 kB)

Symmetrical Variable Speed Pulleys

Berges Catalogue

English (PDF 10.83 MB)

Asymmetrical Variable Speed Pulleys

Berges Catalogue

English (PDF 5.18 MB)


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