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AT Polyurethane Open-Ended Timing Belts

Polyurethane open-ended timing belts in AT profile are made of thermoplastic polyurethane, which has high dimensional stability and wear resistance, and steel tensile fiber, in special cases aramid or stainless steel.

The open-ended belts can be welded into endless belts.

AT3 Polyurethane Open-Ended Timing Belts - Preview


Tooth pitch (mm): 3.0
Thickness (mm): 1.9
Standard width (mm): 5; 10; 16; 20; 25; 50 
AT5 Polyurethane Open-Ended Timing Belts - Preview


Tooth pitch (mm): 5.0
Thickness (mm): 3.7

Standard width (mm): 10; 16; 25; 32; 50; 75; 100 

AT10 Polyurethane Open-Ended Timing Belts - Preview


Tooth pitch (mm): 10.0
Thickness (mm): 4.5

Standard width (mm): 16; 25; 32; 50; 75; 100; 150 

AT20 Polyurethane Open-Ended Timing Belts - Preview


Tooth pitch (mm): 20.0
Thickness (mm): 8.0

Standard width (mm): 25; 32; 50; 75; 100; 150 

Belts Construction

Open-Ended Polyurethane Timing Belt Structure

  1. Polyurethane teeth
  2. Steel cord tension member
  3. Polyurethane backing

Belts Fields of Use

Polyurethane timing belts are used in all areas, from miniature drives, high-precision positioning and sorting mechanisms, small handheld machines to high-performance drives for building and woodworking machines.

Belts Characteristics

  • High transmission power and long life
  • Resistant to oil, fuel, benzol, UV radiation and ozone
  • Wear-resistant
  • Temperature range, depending on application, from −30 °C to +80 °C
  • Maintenance-free

Belts Code Description

AT10 - 100 PAZ CONTI SYNCHRODRIVE (4 × 25 mm)

Code Part Description



Tooth pitch in mm


Belt width in mm


Surface layer - fabric on tooth side


Type of belt

4 × 25 mm

With the possibility of longitudinal division into 4 belts with a width of 25 mm

Optional Belt Surface Layers

The choice of the surface layer depends on the type of machine, the ambient temperature, the size of the pulleys, etc. Specifying the surface layer is determined by the material and the thickness of the layer.

Layer Name Material Layer Illustration
PAZ (NFT) - nylon fabric on teeth
Low coefficient of friction
Nylon PAZ (nylon fabric on teeth)
PAR (NFB) - nylon fabric on back
Surface protection
Nylon PAZ (nylon fabric on back)
PAZ + PAR (NFT + NFB) - fabric on teeth and back
Low coefficient of friction and surface protection
Nylon PAZ PAR (fabric on teeth and back)

The fabric on teeth and back can be combined with all other layers. A complete range of belt surface layers

Documents for Download

Dimensions and Parameters of Polyurethane Open-Ended Timing Belts - Preview

Dimensions and Parameters of Polyurethane Open-Ended Timing Belts

TYMA CZ Data Sheets

Czech and English (PDF 903.91 kB)

Drive Belts - Preview

Drive Belts

TYMA CZ Catalogue

Czech and English (PDF 4.54 MB)



ContiTech Catalogue

English and German (PDF 4.88 MB)

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