When most people think of a timing belt, they think of a true belt with a closed loop to be positioned over two or more gears. The open end timing belt, on the other hand, is not a closed loop but rather an open roll style of timing belt option.
The use of an open ended timing belt is typically reserved for reciprocating and linear motion types of equipment, systems, and machines. For example, this is the type of belt most often found on overhead trolley systems in warehouses or manufacturing facilities. It is also the type of belt used in many types of automatic door openers or even for some types of printers and similar electronic hardware.
Many robotic systems and automated processes also use the open ended timing belt. They tend to be more durable, have longer life cycles and are less likely to stretch and break as compared to other options in timing belts.
Options to Consider
The open end timing belt can be made from a variety of different materials. The most common is thermoset polyurethane, and there are several important reasons why this option is the best for most applications.
Thermoset polyurethane is highly resistant to any type of damage from exposure to water, grease or oil as well as many chemicals. In addition, this is a naturally very durable material which is highly resistant to wear and tear. With high abrasion resistance, these belts are less likely to fray or wear as compared to other types of materials.
The thermoset polyurethane open end timing belt can also be designed with additional reinforcing strength members throughout the belt. There are also additives which can be included in the thermoset process to further boost resistance and make the belt stronger in challenging applications.
