Bearings for spindles Aging too early can lead to machine shutdown, resulting in loss of bearings and machinery. The premature aging of the special bearing for the main shaft may have the following reasons: the bearing is too tight with each other, the lubrication effect is not good, the assembly is not centered, the vibration is obvious, the raw material is exhausted, and the environmental pollution is corroded. Mutual fit is too tight. When the bearing is forced into the journal, it will cause a circular motion trajectory with serious damage to the bottom end of the guide rail, and cracks will appear on the inside and outside of the slide rail and on the steel ball. There are two ways to check the quality of bearing installation. Observation method: when rotating the bearing end cover, if the rotation is easy and flexible, and there is no vibration and left and right shaking, it is considered to be up to the standard. Micrometer detection method: Assemble the motor end cover with bearing on the notch of the motor shaft, and use a 0.03mm thick micrometer to check the axial gap around the bearing. If the larger gap is just above the middle (the motor is assembled vertically) , the assembly is appropriate and reliable, otherwise, the assembly is poor. The reason for the poor lubricating effect is that there is a serious lack of clear grease or vegetable grease becomes dry and aged. Due to the frictional heat generated by the high-speed operation of the spindle, the temperature of the special bearing for the spindle is too high and the esterification fades, which is mainly manifested in that the steel balls, ball bearings, inner holes and journals of the bearings turn brown or blue. Only when the torque is rotated can the rotation be stable. For 37 years, we have been focusing on the production of special bearings for spindles!