This Belden universal joint boot cover made of nitrile rubber helps retain lubricants and provides protection against contaminants to extend the life of the universal joint. Nitrile rubber exhibits high tensile strength, resists abrasion and tearing, and is compatible for use with petroleum-based oils, hydrocarbon fuels, alcohol, water, and acids. The boot slides over the joint and is typically secured in position with ties (not included). Depending on the boot model, the boot may have single, double, or triple bellows. Belden universal joints are suitable for use in various consumer and industrial applications, including drilling and tapping machine tools, pumps, textile machinery, and medical and optical devices.

Specifications

Universal joints (also called U-joints, universal couplings, Cardan joints, Hooke’s joints, or Hardy-Spicer joints) are used to transmit motion and rotational power, or torque, between two shafts that are offset at an angle. Most universal joints consist of two yokes and a middle assembly; the hub end of each yoke attaches to a shaft while the yoke ears attach to and pivot around the middle assembly to accommodate shaft misalignment. The type of middle assembly determines its usage—pin and block joints are suitable for transmitting high torque, needle bearing joints are used to handle high rotational speeds, and ball and socket joints are used in applications requiring low backlash (play between moving parts). The body of the universal joint may include a single joint to accommodate only angular misalignments between shafts, or two joints to accommodate both angular and parallel misalignments. Available in a variety of materials and configurations, universal joints are used in applications including motor vehicles, conveyors, medical and optical devices, forestry and mining equipment, robotics and space exploration, and aeronautics, among others.

Belden manufactures precision universal joints and power transmission assemblies. The company, founded in 1939 and headquartered in Broadview, IL, meets International Organization for Standardization (ISO) standard 9001:2008.