Friends living near steel ball factories might often hear about people getting burned due to bearing steel balls. The burns from ordinary bearing steel balls can be categorized into secondary tempering burns and secondary quenching burns, which further divide into pinpoint burns, polar burns (large ball burns), and linear burns. Why do people get burned? Many are not clear on the reason. Not understanding is fine; today, this editor will introduce the causes of bearing steel ball burns, and I believe after hearing this, everyone will have a clear understanding.

The grinding wheel's excessive speed caused the imported bearing lubricant's steel ball to suddenly accelerate its operation.

2. An excessive increase in pressure was caused when abrasive particles (chunks) were placed on the surface of the ball.

3. Impacting steel balls on the defects of grinding wheel groove cracks or spalling areas.

4. Addressed the issue of excessive sanding wheel oscillation caused by the combination of machine tool spindle bearing infringement and high NSK bearing shell and oil temperature in the pumped storage unit.

5. Cast iron plates have sand holes, gas pores, and hard particles, causing excessive pressure on the surface of the steel balls.

6. The junction between the distributor and the cast iron disk does not match, or the distributor's hunch causes the steel ball to briefly linger at the entrance, where it is struck by the groove edge of the abrasive wheel.

7. Cast iron pan at the entrance of the ball running trough.

8. Slow ball speed, insufficient number of steel balls between the grinding wheel and the disk, leading to excessive ball pressure.

9. The coolant was too dirty, and the grinding wheel was not cleaned in time after repairs.

That concludes our discussion on the causes of ball burnishing in bearing steel.