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HTD Taper Lock Timing Pulleys

HTD Taper Lock timing pulleys are the basic type of pulleys for HTD and RPP timing belts for Taper bush.

They are made of steel or gray cast iron.

The pulleys are mounted to the shafts using the Taper bushes. The Taper bush does not only secure the pulley on the shaft with a keyway but also fixes it against axial displacement.

HTD 5M Taper Lock

Tooth pitch: 5.0 mm
Teeth z = 34 - 150

Stand. diameters Dp (mm): 54.11 - 238.73

HTD 8M Taper Lock

Tooth pitch: 8.0 mm
Teeth z = 22 - 192

Stand. diameters Dp (mm): 56.02 - 488.92

HTD 14M Taper Lock

Tooth pitch: 14.0 mm
Teeth z = 28 - 216

Stand. diameters Dp (mm): 124.78 - 962.57

Pulleys Fields of Use

The HTD Taper timing pulleys are designed for all types of HTD and RPP belts.

They are typically used in machine tools, small machinery, compressors, packaging, printing machines, in the food, paper and chemical industry and in many other machines.

Pulleys Material

Steel or cast iron

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.

Pulleys Basic Profile

  • Pulley 5M for belts HTD 5M (or 5RPP) with grooves pitch 5.00 mm
  • Pulley 8M for belts HTD 8M (or 8RPP) with grooves pitch 8.00 mm
  • Pulley 14M for belts HTD 14M (or 14RPP) with grooves pitch 14.00 mm

Pulleys Code Description

30-8M-20 (Type 5F) TB 1108

Code Part Description

Number of pulley teeth


Teeth pitch in mm and type of pulleys for belts HTD


Width of belt in mm


Type of construction


Taper Bush


Type of  Taper Bush 

Documents for Download

Dimensions and Parameters of HTD Taper Lock Timing Pulleys - Preview

Dimensions and Parameters of HTD Taper Lock Timing Pulleys

TYMA CZ Data Sheets

Czech and English (PDF 1.21 MB)

Pulleys and Clamping Bushes - Preview

Pulleys and Clamping Bushes

TYMA CZ Catalogue

Czech and English (PDF 3.64 MB)