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Inch Sizes Timing Pulleys

Inch sizes timing pulleys are the basic type of inch sizes pulleys. They are made of steel, gray cast iron or aluminum alloy. Designed according to ISO 5294.

Inch Sizes Standard Pilot Bore Timing Pulleys - Preview


Pilot Bore Timing Pulleys XL, L, H, XH for timing belts with trapezoidal profiles and inch pitch.

Inch Sizes Taper Lock Timing Pulleys - Preview

Taper Lock

Taper Bore Timing pulleys L, H, XH for timing belts with trapezoidal profiles and inch pitch.

Pulleys Fields of Use

The inch sizes timing pulleys are typically used in older machines with lower and medium performance, for example in packaging machines, in the ceramic, textile, food and tobacco industry and in many other machines.

In new applications, they are often replaced by HTD, STD or CTD profiles.

Pulleys Material

Steel, grey cast iron or aluminum alloy.

Other materials to order.

Parameter Standard
Surface roughness ISO 254
Balance quality grade VDI 2060, ISO 1940


Cast iron pulleys at v < 30 m/s must be balanced.

Documents for Download

Pulleys and Clamping Bushes - Preview

Pulleys and Clamping Bushes

TYMA CZ Catalogue

Czech and English (PDF 3.64 MB)

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