... .Electronic machinery Robot, measuring instruments, medical equipment, X-Y table, factory automation equipment, etc.4.Transport machinery Material handling ... Good performance with low noise and backlash5.have own factory,large production,near port 6.competitive price,timely deliveryBall ... Screw specification(SFU series): I: Lead Da: Ball Dia. K: Stiffness (Kgf/μ m) Ca: Basic Dynamic Rating Load ( ...