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由于徐州INA轴承工作空间环境的特殊性，固体润滑轴承多用于空间轴承。主要故障有：加工、安装、润滑膜和温度引起的故障。
Because of the particularity of working space environment of Xuzhou INA bearing, solid lubricated bearings are mostly used in space bearings. The main faults are: faults caused by processing, installation, lubrication film and temperature.
其中，机械加工过程中的故障主要与零件的波纹度、粗糙度、滚动体的形状和环件的制造精度有关；安装引起的故障主要与配合公差、预紧力、工作间隙和冲压工艺有关；润滑膜是M。。微动磨损、剥落磨损和滚动滑动是温度诱发故障的主要原因。微动磨损、剥落磨损和滚动滑动是温度诱发故障的主要原因。徐州INA轴承故障主要是由轴承工作环境的温差和较高温度变化引起的。
Among them, the faults in the process of mechanical processing are mainly related to the waviness, roughness of parts, the shape of rolling bodies and the manufacturing accuracy of rings; the faults caused by installation are mainly related to mating tolerance, pre-tightening force, working clearance and stamping process; and the lubricating film is M. Fretting wear, peeling wear and rolling sliding are the main causes of temperature-induced faults. Fretting wear, peeling wear and rolling sliding are the main causes of temperature-induced faults. The failure of Xuzhou INA bearing is mainly caused by the temperature difference of bearing working environment and the change of higher temperature.
计算方法分类
Classification of calculation methods
不同的轴承疲劳寿命计算方法产生不同的计算结果。给出了两种计算方法：L.P理论算法和ISO国际标准。
Different calculation methods of bearing fatigue life produce different calculation results. Two calculation methods are given: L.P theoretical algorithm and ISO international standard.
算法研究。ISO国际标准算法是L.P理论算法的简化。轴承支承环被认为是刚性的，但实际支承环是非刚性的，在同一载荷下接触变形较大。因此，徐州INA轴承标准中忽略了离心力和陀螺力矩。在径向载荷作用下，ISO标准是基于轴承内部间隙为零，滚动体与滚道接触载荷均匀分布的假设。因此，无论是P理论还是传统的ISO标准，滚珠轴承计算结果的相对误差都很大。理论上忽略了滚动体的疲劳寿命。
Algorithms research. ISO international standard algorithm is a simplification of L.P theoretical algorithm. Bearing support rings are considered to be rigid, but the actual support rings are non-rigid and have large contact deformation under the same load. Therefore, centrifugal force and gyro moment are ignored in Xuzhou INA bearing standard. Under the action of radial load, ISO standard is based on the assumption that the internal clearance of bearing is zero and the contact load between rolling element and raceway is uniformly distributed. Therefore, whether P theory or traditional ISO standard, the relative error of the calculation results of ball bearing is very large. The fatigue life of rolling element is neglected in theory.
改变环境的措施
Measures to change the environment
1。增加滚动体数量：滚动体数量增加，各滚动体径向载荷减小，各滚动体接触载荷减小，轴承疲劳寿命增加。
1. Increasing the number of rolling elements: the number of rolling elements increases, the radial load of each rolling element decreases, the contact load of each rolling element decreases, and the fatigue life of bearing increases.
2。其二。增加滚动体直径：增加滚动体直径等于增加轴承结构和承载力，因此轴承寿命随着滚动体直径的增加而增加。
2. Second. Increasing the diameter of the rolling element: Increasing the diameter of the rolling element equals to increasing the bearing structure and bearing capacity, so the bearing life increases with the increase of the diameter of the rolling element.
三。滚子与滚道接触参数的合理设置：徐州INA轴承内圈曲率系数Z小于0.52，外圈曲率系数Z小于0.53。还应注意它们之间的匹配。
Three. Reasonable setting of contact parameters between roller and raceway: curvature coefficient Z of Xuzhou INA bearing inner ring is less than 0.52, curvature coefficient Z of outer ring is less than 0.53. Attention should also be paid to the matching between them.
此外，通过减小轴承直径并确保轴承不会滑动，可以尽可能减小预紧力。高速时，滚筒由陶瓷制成，而不是钢制成。
In addition, by reducing the bearing diameter and ensuring that the bearing will not slide, the preload can be reduced as much as possible. At high speed, the drum is made of ceramics, not steel.
文章来自：徐州SKF轴承 www.wh-skf.com
Article from: Xuzhou SKF Bearing www.wh-skf.com
文章来自：徐州INA轴承 www.ina-china.cn
Article from: Xuzhou INA Bearing www.ina-China.cn
文章来自：徐州NSK轴承 www.klbbearings.com
Article from: Xuzhou NSK Bearing www.klbbearings.com
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