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Joint bearing technology

Joint bearing technology

2020-07-06

Joint bearing has its own technical characteristics and maintenance requirements because of its completely different structure and working mechanism from rolling bearing.(1) Working temperature The allowable working temperature of joint bearings is mainly determined by the matching materials between the sliding surfaces of the bearings, especially the sliding surfaces of plastic materials of self-lubricating joint bearings, whose bearing capacity tends to decline at high temperatures.If the sliding surface material of a lubricated joint bearing is paired with steel/steel, the allowable operating temperature depends on the allowable operating temperature of the lubricant.But for all lubricated and self-lubricated joint bearings, can be used in the temperature range of -30℃ ~ +80℃, and maintain the correct bearing capacity.(2) the Angle of joint bearing Angle adjustable than general heart of rolling bearing, very suitable for use in supporting parts of the concentricity requirement is not high, the Angle of joint bearing on bearing structure size, type, sealing device and supporting form is different, generally to the heart joint bearing range Angle is 3 ° ~ 15 °, angular contact bearing joints Angle range is 2 ° ~ 3 °, thrust bearing joint Angle range is 6 ° ~ 9 °.(3) Fit Under any circumstances, the chosen fit of the joint bearing shall not cause uneven deformation of the ring, and the choice of its fit nature and grade shall be determined according to the working conditions such as bearing type, supporting form and load size.(4) Loading and unloading of joint bearings shall follow the following principle, that is, the force exerted by assembly and disassembly shall not be transmitted directly through the spherical sliding surface.In addition, auxiliary loading and unloading tools, such as sleeve and disconnector, should be used to directly and evenly apply the loading and unloading force exerted by the outside on the matching ring, or heating and other auxiliary methods should be used for loading and unloading.

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