Which timing belt: AT, HTD or GT? With customers we regularly discuss which type of toothed belt is most suited to their application, not an easy task because of the many dimensions and different tooth profiles. We can also now supply pre-machined pulleys to suit the new PL series of compact planetary gearheads. The supply of toothed belts is getting ever closer to our product range and therefore we think that it is time to put all the possibilities in one overview.

Timing belts are available in two sizes: in metric (millimetres) and imperial (inches) dimensions. The profile of the inner teeth of the belt which goes over the outer teeth of the pulley is the second most important factor. The most common forms are the trapezoidal and round tooth shape. What makes it complex are the different types of tooth shapes. Therefore, we are going to discuss the variety of different tooth types available and to help you one step further, we also provide a number of common applications in each case.

TIMING BELT: METRIC DIMENSIONS

The metric dimension belts commonly feature both trapezoidal and round tooth profiles. For metric timing belts the number in the description refers to the spacing or “pitch” of the teeth in mm. (For example, AT05 and HTD 5M are 5 mm pitches, and 8YU has 8 mm).

This article comes from apexdyna edit released