Spherical plain bearings have an inner ring with a sphered convex outside diameter and an outer ring with a correspondingly sphered but concave inside surface,which enables it to tolerate large load.According to their types and configuration,it can tolerate axle and radial load as well as conbined axle and radial load.Since it has composite material on the outer sphere of the inner ring,thus it can produce self-lubricating during work. Self-lubricating spherical plain bearing applies in water conservancy,specialized mechinery and other industries.Because of the large sphere slidinig contact area and tilt angle of the plain bearing ,as well as most of the spherical plain bearings take special craft treatment,such as surface phosphating, galvanization,chromate treatment,and inlaid mats, spray coating and so on,thus, it has larger load capacity and anti-force capability,as well as anti-corrosion,wear resistant,sel-aligning and self-lubricating features.They can work normally even if it installed mismatch. Therefore,spherical plain bearing are widely used in low-speed swing motion,tilt and rotation movement.

Spherical plain bearings and rod ends bearing have a variety of designs and different sliding contact surface combinations. Each design and conbination has unique performance,enable it suitable for certain applications.

Including the following types:
Need to be maintained joint bearing
Maintenance-free Spherical Plain Bearings
Need to maintain the rod ends bearing
Maintenance-free rod ends bearing

Spherical plain bearings have an inner ring with a convex sphered outside surface and an outer ring with a correspondingly sphered but concave inner surface. They are particularly suitable for bearing arrangements where alignment movements between shaft and housing have to be accommodated or where recurrent tilting or oscillating movements must be performed at relatively slow sliding velocities. Spherical plain bearings are produced with different sliding contact surfaces combinations, the sliding surfaces of the inner and outer rings are made of different materials. There are two main groups: steel-on-steel spherical plain bearings and maintenance-free spherical plain bearings. Maintenance-free spherical plain bearings incorporate special sliding layers or liners of wear-resistant materials. They are used for applications where maintenance-free operation is required, where the use for application is required, where the use of lubricants is not permitted (e.g. in the food industry), or where the application is such that under the actual operating conditions lubrication is inadequate or even lacking, making the use of steel-on-steel bearings inadvisable. Maintenance-free bearings are primarily intended for the accommodation of heavy loads acting in a constant direction. They have only limited ability to take up alternating loads.