Screw extractor sets 倒牙丝锥组件
Screw plate sets metric coarse 丝攻和板牙成套工具
Screw-thread Sets 螺纹组合
screw sets
螺杆组
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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