An HTD designation on a timing belt means it is designed for High Torque Drive applications. These are often the synchronous belts, but there can be a range of different applications where the HTD timing belt is the best choice.
It is easy to identify these types of timing belts. They have a curvilinear tooth profile, which is really just like what it sounds. Each tooth on the belt, when seen in profile, looks like the top of a half circular elevated from the base of the belt.
An HTD timing belt can be designed with the tooth profile on one side of the belt or on both sides. The choice of double sided belts is less common, but it can occur in different industrial applications, equipment and specific manufacturing systems and machines.
Options to Consider
The different profile of the belt, which can be set at 2M, 3M, 5M, 8M, 14M or even 20M will have a different type of use or application. While it is possible to use larger belts for lighter duty applications, the reverse is not true. Choosing a smaller profile for a heavier load will result in premature belt failure or slippage and stretching of the belt.
The smaller sizes of 2M, 3M, and 5M are often used in light duty industrial and consumer products. This can include power tools and appliances, light duty systems and machines and applications where there is lower power required throughout the device or system.
The larger tooth profiles are used in increasingly more demanding applications. This can include production facilities, on conveyor systems with continuous loads, in paper and textile manufacturing systems as well as in industrial equipment and robotics.
The use of the double-sided HTD timing belt is often required where there needs to be a change in the rotational direction of the part, component or systems. These double-sided belts also come in standard tooth profiles as well as custom profiles.