Ceramic Balls vs. Steel Balls
Ceramic precision balls offer advantages such as being lightweight, lower friction resistance, high temperature resistance, higher rigidity, higher hardness, smoother surface, and higher corrosion resistance (won't rust when exposed to water). Ceramic balls include materials such as:
Are Ceramic Ball Bearings Better Than Steel Ball Bearings?
Ceramic precision balls are considered superior because they outperform and outlast more traditional steel balls used for bearings. Ceramic balls require less lubrication