以上来源于: WordNet
Wheel spindle and motor is either designed to use preload super precision ball bearing in a case.
砂轮主轴与电机一体，采用预加载荷的高精度滚动轴承。
This grinder use electric spindle which hold by ceramic ball bearing as high-speed spindle system, and use linear motor as precision feed system.
该磨床选用陶瓷球轴承电主轴作为高速主轴系统，利用直线电机作为高速精密进给系统。
Feed transmission: using AC servo motor to drive the precise ball screw sets that supported by special ball screw bearing, which improves the rigidity and precision of feed movement.
进给传动：三向进给均采用交流伺服电机驱动精密滚珠丝杆，专用丝杆轴承支承，提高了机床的进给运动刚性和精度。
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