This Belden heavy-duty single pin-and-block universal joint made of stainless steel is designed to connect two rotating shafts at angles up to 35 degrees. This universal joint compensates for angular misalignments and its single joint configuration provides one point of flexion for high torque transmission and torsional stiffness. For strength, durability, and corrosion resistance, the joint yokes are made of 303 American Iron and Steel Institute (AISI)/1.4305 Deutsches Institut für Normung (DIN) stainless steel, and the pins and blocks are made of hardened 416 AISI/1.4005 DIN stainless steel. This universal joint is suitable for machinery exposed to corrosive chemicals or moisture, such as food processing, marine, pump, and medical equipment, among others. 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.
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