发动机主轴轴承常常在高速条件和高温环境下工作。若轴承中的摩擦热及高温环境传入轴承的热量不能有效地散发,则轴承会因元件的热变形导致转动不灵活、或因为高温导致润滑油变质使滚道及滚动体表面损伤而失效。因此,制造轴承的材料必须具有一定的耐热性能,轴承的结构也必须具有良好的润滑性、安全性和可靠性,以保证轴承能够正常发挥性能。 Engine spindle bearings are often working under high-speed conditions and high temperatures. If the bearings in the friction heat and high temperature environment into the bearing heat can not be effectively distributed, the bearing will be due to thermal deformation components cause rotation is not flexible, or because of high temperature lead to deterioration of the lubricant to the raceway and the rolling surface damage and failure. Therefore, the bearing material must have a certain heat resistance, the bearing structure must also have good lubrication, safety and reliability, to ensure that the bearing can function properly.