High speed electric spindleImproper lubricant, excessive load, excessive preload, excessive interference, and foreign objects biting into metal powder can all cause bearing damage. After bearing damage, it is necessary to comprehensively understand the usage of the bearing, identify the situation of the accident, investigate the bearing damage and various reasons, and prevent it from happening again. The following are the causes and remedial measures for bearing damage.

High speed electric spindle bearing peeling: When the bearing rotates again under load, the raceway surfaces or rolling surfaces of the inner and outer rings will peel off like fish scales due to rolling fatigue. The so-called adhesive injury refers to the accumulation of small burns on the sliding surface of the bearing surface of a high-speed electric spindle, resulting in damage. Linear scratches on the circumferential direction of the slide and rolling surface. The cycloidal scar on the roller end face is close to the scratch on the surface of the roller end ring. The so-called crack refers to the damage caused by cracks in the raceway wheel or roller. If used continuously, cracks will appear as they develop. The surface of the raceway has weak luster and dark pear shaped pockmarks. In high-speed electric spindles, wear caused by relatively repeated small sliding between two contact surfaces occurs at the contact area between the bearing raceway surface and the rolling elements.

Due to its reddish brown and black abrasive powder, it is also known as micro corrosion. The so-called creep refers to the relative sliding of the mating surface of a bearing when there is a gap on the mating surface. The creep mating surface may have bright or dark mirror surfaces, and sometimes it may also be damaged or worn. The so-called galvanic corrosion refers to the phenomenon where electric current flows through the contact area between the bearing raceway wheel and the rolling element, generating sparks through a thin lubricating oil film, resulting in local melting and uneven surfaces. During the installation and disassembly process of high-speed electric spindles, axial linear scratches may occur on the raceway surface and rolling surface.