Common Disadvantages of the Steel Ball Polishing Process

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The steel ball polishing process is widely used in bearing manufacturing to achieve a smooth and precise surface finish. However, this process can sometimes lead to several common disadvantages that affect the quality and performance of the final product. Here are some of the typical issues: 1. **Surface Marks and Scratches**: These often occur due to improper radius (R) of the ball plate entrance or the splitter. This results in an uneven surface, which may reduce the ball’s performance and lifespan. 2. **Eutectic Cracks and Deep Grooves**: When the eutectic group of the pitting disc is too large, or the grooves are too deep, it can cause shrinkage holes to appear during use. Metal particles may break off and embed themselves into the outer surface of the steel ball. Additionally, if the number of steel balls entering the two plates is insufficient, and the working pressure is not properly adjusted, small steel balls may be processed with excessive force, leading to damage and an uneven surface. 3. **Large Cracks from Ring Blank**: If the ring blank has significant flaws, high pressure and speed can cause stress concentration at contact points, leading to microcracks. These cracks become visible after hot pickling and can compromise the structural integrity of the steel ball. 4. **Turtle Crack Formation**: When the groove of the polishing disc is not suitable, the steel ball loses its "self-renewing" ability. Initially, the outer surface appears bright, but as processing continues, the surface becomes worn out, eventually forming turtle-like cracks. These issues highlight the importance of proper design, material selection, and process control in the steel ball polishing process. By addressing these challenges, manufacturers can significantly improve the quality and durability of their bearings.

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**Recommended Reading:** - View faults and solutions for imported bearings in operation - Detailed SKF bearing measurement specifications and inner ring fixing methods - Analysis of rolling bearing requirements for smoothing agents - FAG bearing damage conditions and causes This article is linked to http:// Please cite China Bearing Network: http:// Previous: KOYO Bearing - Micro Bearing Next: Common Terms and Definitions for Bearings (14)

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