上海充通大学 Shanghai Jiao Tong University Ball Screws (滚珠螺旋) >Modern machine tools,automation equipment,and actuators on aircraft use ball screws for high precision, high efficiency,fast response,and smooth operation. Carriage Rotary Encoder XX ☒☒Ⅻ ☒X AC Brushless Motor Flexible Coupling Rearing Housing Ballscrew Ballnut Support Bearings 77 Ball Screws（滚珠螺旋） Modern machine tools, automation equipment, and actuators on aircraft use ball screws for high precision, high efficiency, fast response, and smooth operation