Joint bearing matching: in any case, the matching selected by the joint bearing shall not cause uneven deformation of the ferrule, and the matching nature and grade shall be selected. Joint bearing lubrication: when the speed generated by the applied load and swing motion is very small, the oil fed joint bearing can be operated without lubrication. In general, however, grease must be replenished regularly. During the initial installation and operation, it is recommended that the lubrication cycle should be appropriately shortened. It must be determined according to the working conditions such as bearing type, support form and load size. Assembly and disassembly of spherical plain bearings: the assembly and disassembly of spherical plain bearings shall follow the following principles, that is, the force exerted by assembly and disassembly cannot be directly transmitted through the spherical sliding surface. In addition, auxiliary loading and unloading tools, such as sleeves and extractors, shall be used to apply the external loading and unloading force directly and evenly to the matched ferrules, or no-load loading and unloading shall be carried out by heating and other auxiliary methods. Joint bearing inclination angle: the inclination angle of joint bearing is much larger than that of ordinary adjustable rolling bearings, which is very suitable for supporting parts with low concentricity requirements. The inclination angle of joint bearing varies with the size, type, sealing device and support form of bearing structure. Generally, the inclination angle range of centripetal joint bearing is 3 ° ~ 15 °, that of angular contact joint bearing is 2 ° ~ 3 °, and that of thrust joint bearing is 6 ° ~ 9 °. Operating temperature of spherical plain bearings: the allowable operating temperature of spherical plain bearings is mainly determined by the matching materials between the sliding surfaces of bearings, especially the plastic sliding surfaces of self-lubricating spherical plain bearings, whose bearing capacity will decline at high temperatures. If the sliding surface material of lubricated plain bearings is steel / steel, the allowable working temperature depends on the allowable working temperature of the lubricant. However, for all lubricated and self-lubricating spherical plain bearings, they can be used within the temperature range of -30 ℃ ~ +80 ℃ and maintain correct bearing capacity. Joint bearing installation: when assembling the joint bearing series, it is necessary to pay special attention to the position of the outer ring dividing surface. In order to avoid the load directly acting on the dividing surface, it is necessary to maintain the dividing surface at right angles to the conforming direction.