... precise instrument, especially for CNC machine. Ball Screw/ Lead Screw :Description of Model Code :SFUR02505B2DFC71000P0S F U R 025 05 B2 ... trim; S: single-trim9 F: Rolling G: Grinding10 Precision Grade of Lead: C0,C1,C2,C3,C5,C7, The Highest Grade is ... , torque, positioning accuracy, repeat positioning accuracy, shiffness, lead length, hole diameter of screw cap and so on.As a professional manufacture ...