https://www.machinetool-factory.com/news/exploring-the-uses-of-ball-lapping-machine.html
Ball bearings are ubiquitous components in machinery and equipment across industries, facilitating smooth rotation and movement. Ball lapping machines play a critical role in the production of ball bearings, ensuring precise sizing and surface finish of the bearing balls. By lapping the balls to exact dimensions and achieving a smooth surface finish, these machines enhance the performance and longevity of ball bearings.