Rod ends and spherical plain bearings are designed to support a load. This combination also accommodates angular motion, misalignment and oscillation in mechanical motions systems. Rod ends and spherical plain bearings are available in a variety of sizes and options to meet the needs of your application.
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Rod ends consist of a threaded housing with an integral spherical plain bearing or a threaded housing formed around a ball. Rod ends are designed to provide an efficient smooth transfer of motion in a wide variety of applications and equipment. This motion is usually associated with various types of linkage controls. Commonly referred to as plain or sliding bearings, they are designed primarily to assist and provide motion transfer, support a load, allow for angular motion and angular misalignment. Rod ends can be joined together or connected with a threaded rod or tube to form linkage assemblies allowing design engineers flexibility in transferring motion between points with long center distances. There are two surface areas in contact rubbing against each other, therefore normal operation of rod ends results in wear of the raceways leading to fatigue or fracture of the outer member. Give consideration to this in the design of the equipment. In general, rod ends are designed to accept radial loads and not intended to carry thrust loads.
Spherical plain bearings consist of an outer race formed around a hardened spherical ball. Spherical plain bearings provide a similar function as rod ends and require housing support. They are typically more capable of supporting higher loads versus an equivalent rod end bore size. This occurs because rod end load capacity is controlled by the head and shank geometry. Spherical bearings have a larger bearing area and generally are less restricted by the housing material or dimensions in which they are mounted.
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