Manifestation of spherical roller bearing damage

Damage status of spherical roller bearings, such as: roller bearing ring guard card, as a reason to consider, lack of lubricant, not suitable for, for the defect of oil discharge structure, foreign invasion, bearing installation error, the deflection of the shaft is too large, also can have these reasons. 1, the cavitation cavitation of spherical roller bearing is contact with the liquid and solid surface generated by the relative motion form of surface damage. When the lubricating oil in the oil film of low pressure area, oil will form bubbles, the bubbles movement to high, the pressure under the action of air bubble breaking, the breaking of instant impact and high temperature, solid surface under the effect of the impact of repeated, material fatigue peeling, the friction surface appear small pits, and then developed into the cavernous scars. Overload, high speed, and the sliding bearing with higher load and speed, often occurs cavitation; 2, fluid erosion of spherical roller bearing fluid erosion refers to the fluid fierce shock can cause fluid solid surface erosion, point to appear on the solid surface scars, the damage of the surface is smooth; 3, the electric erosion of spherical roller bearing electrical erosion means due to the motor or electric leakage, produce electric spark between the bearing friction surface, on the friction surface caused by dot scar, is characterized by damage to and fro in a hard shaft neck surface.