The feature: It is a kind of special structure of sliding bearings. The structure is simple than rolling bearing, according to its different type and structure, can bear radial load, axial load or the radial, axial co-existing union load. Joint bearings are generally used to speed the lower swing motion (namely the Angle motion), with the sliding surface for spherical shape, yi ke in certain Angle range be tilted movement (I. E. Self-aligning exercise), in supporting shaft and axis shell hole concentricity bigger when, still can work normally. Application as follow: Oscillating bearings widely used to the hydraulic oil tank, forging press machine, construction machinery and automation equipment, the vibration damper, and water conservancy machinery industries. Oscillating bearings have a big load carrying capacity and impact resistance. According to different structures and types, oscillating bearings can bear radial load, axial load and combined load.