Ball screw ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l. Ball screw processing accuracy is higher than sliding screw, and its process is in five stages: pre-heating treatment, rough processing, semi-finishing, finishing and final processing stages. Ball screw processing accuracy is higher than sliding screw, and its process is in five stages: pre-heating treatment, rough processing, semi-finishing, finishing and final processing stages. Ball screw processing accuracy is higher than slid Screw threaded surface consists of two circular arcs, and the fine grinding wheel is fixed with special fixers. Screw threaded surface consists of two circular arcs, and the fine grinding wheel is fixed with special fixers. Screw threaded surface consists of two circular arcs, and the fine grinding wheel is fixed with special fixers. Ba tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n