气蚀：

Cavitation:

直线轴承的气蚀是固体表面与液体接触并作相对运动时所产生的表面损伤形式。当润滑油在油膜低压区时，油中会形成气泡，气泡运动到高压区后，在压力作用下气泡溃灭，在溃灭的瞬间产生极大的冲击力和高的温度，固体表面在这冲击力的反复作用下，材料发生疲劳脱落，使摩擦表面出现小凹坑，进而发展成海绵状伤痕。重载、高速，且载荷和速度变化较大的滑动轴承中，常发生气蚀。

创盈彩网址Cavitation in linear bearings is a form of surface damage that occurs when a solid surface comes into contact with a liquid and undergoes relative motion. When lubricating oil is in the low-pressure area of the oil film, bubbles will form in the oil. After the bubbles move to the high-pressure area, they will collapse under pressure, producing a great impact force and high temperature at the moment of collapse. Under the repeated action of this impact force, the solid surface will experience fatigue detachment, causing small pits on the friction surface, which will develop into sponge like scars. In sliding bearings with heavy loads, high speeds, and significant changes in load and speed, cavitation often occurs.

流体侵蚀：

创盈彩网址Fluid erosion:

直线轴承的流体侵蚀是指流体激烈地冲击固体表面会造成流体侵蚀，使固体表面上出现点状伤痕，这种损伤的表面较光滑。

创盈彩网址The fluid erosion of linear bearings refers to the fluid erosion caused by intense impact on the solid surface, resulting in point like scars on the solid surface. The surface of such damage is relatively smooth.

电侵蚀：

创盈彩网址Electroerosion:

直线轴承的电侵蚀是指由于电机或电器漏电，在直线轴承摩擦表面间产生电火花，在摩擦表面上造成点状伤痕，其特征是损伤往复出现在较硬的轴颈表面上。

The electrical erosion of linear bearings refers to the generation of electric sparks between the friction surfaces of linear bearings due to electric motor or electrical leakage, causing point like scars on the friction surface. Its characteristic is that the damage occurs repeatedly on the harder surface of the shaft neck.

创盈彩网址要想预测直线轴承的疲劳寿命，判断剩余寿命，就需了解所有的轴承疲劳破坏现象，为此将花费很长时间。然而，由于滚动疲劳是在接触点的压应力下发生的疲劳，要达到破损将发生极大的材料变化。因此，除了表面出现早期裂纹、滚道遭受化学影响、裂纹的扩展先于材料变化的情况外，检测材料变化就可能判断直线轴承的疲劳度。

To predict the fatigue life of linear bearings and determine the remaining life, it is necessary to understand all bearing fatigue failure phenomena, which will take a long time. However, as rolling fatigue occurs under compressive stress at the contact point, significant material changes will occur to achieve damage. Therefore, in addition to early surface cracks, chemical effects on the raceway, and cracks propagating before material changes, detecting material changes may determine the fatigue of linear bearings.