无心磨削可生产生产率极高的精密部件，这得益于工作支撑的三个独特功能，即自动定心、松动固定和旋转摩擦驱动机构。调节轮的摩擦/磨损特性在这些机制中起主导作用。然而，在以前的研究中，摩擦/磨损特性尚未阐明。本文分析了工作旋转稳定性，包括纺纱机的产生机理，介绍了用新研制的摩擦试验机测量各种调节轮的摩擦磨损特性。讨论了这些特性对磨削性能的影响，并提出了安全精密无心操作的设置准则。

Centerless grinding produces precision components with extremely high productivity due to three unique features regarding work support, which are the self-centering, the loose-holding and rotation friction drive mechanisms. The friction/wear characteristics of the regulating wheel play a leading role in these mechanisms. However, in previous studies, the friction/wear characteristics have not been clarified yet. This paper analyzes the work-rotation stability including the mechanism of spinner occurrence and presents the friction/wear characteristics of various regulating wheels measure with newly developed friction test machine. The effects of the characteristics on the grinding performance are discussed, and the setup guidelines for safe and precision centerless operations are proposed.