The tensile force of a PU timing belt is largely determined by the tension members used. The choice of tension member material depends on the specific requirements of the respective application.

We offer customised PU timing belts that are cut to your exact specifications.

The HTD 5M profile is semi-circular. The teeth are wider than the tooth spaces, enabling high power transmission. HTD timing belts are characterised by quieter running. The distance from tooth centre to tooth centre is 5 mm.

Selection of tension members in PU timing belts

The tensile force of a PU timing belt is largely determined by the tension members used. The choice of tension member material depends on the specific requirements of the respective application.

Steel tension members

Steel tension members offer outstanding tensile strength for PU timing belts. Their thin, galvanised wires are stabilised by twisting, which enables a high tensile force. However, due to the susceptibility of steel to corrosion, these tension members are not suitable for applications in humid environments or under water.

Compared to Kevlar tension members, steel tension members in identical belt profiles have a higher tensile force and rigidity, which makes them ideal for applications with high loads.

Kevlar tension members (aramid)

Kevlar tension members, also known as aramid tension members, offer better impact resistance than steel. Their flexibility allows them to absorb short-term load peaks without breaking. However, Kevlar tension members should not be deflected more tightly than steel tension members due to their lower flexural fatigue strength. Aramid can also swell under water conditions and generate a higher prestressing force.

Polyamide fabric

Polyamide fabric is used to minimise friction and noise. This coating can be applied to both the tooth side and the back of the belt and is available in three different versions:

PAZ (polyamide fabric on the tooth side): Recommended for applications where the tooth side of the belt rests on a surface. Particularly advantageous for zero-gap timing belt pulleys, PAZ reduces both friction and noise.

PAR (polyamide fabric on the back of the belt): Ideal when the back of the belt rests on a surface. As with PAZ, the fabric reduces friction and noise.

PAZ/PAR (polyamide fabric on the tooth side and back of the belt): This combination is suitable when both the tooth side and the back of the belt are in contact with one surface. The double coating maximises the reduction of friction and noise.

Customised products

We offer customised PU timing belts that are cut to your exact specifications. Please note that cut-to-size belts are excluded from the right of cancellation, as they cannot be re-stocked due to the individual customisation.