Product Name: Ball Screw (FFZD SERIES) Model NO.: FFZD Journal Surface Roughness: 0.63-0.16?m Appearance Shape: Round Shaft Shape: Real Axis Axis Shape: Straight Shaft Journal Diameter Dimensional Accuracy: IT6-IT9 Stiffness & Flexibility: Stiffness / Rigid Axle Load: Drive Shaft Material: Stainless Steel/Customized Trademark: Yigong Origin: China Product Description Ball screw assembly is consisted of screw, nut and balls. It is to transfer the rotary motion into linear motion or transfer the linear motion into rotary motion.Ball screw is widely used for all kinds of industrial equipments and precision instruments. Especially in recent years, it is widely used in CNC machine tools.Yigong ball screw is made by grinding and whirling, not rolled, and it has two kinds of ball screw, P for positioning and T for transmission, accuracy from 1 to 7, 1 is the highest and 7 is the lowest.Model: FFZD(double nuts with flange, spacer preload)Dia.: 12mm-160mmLead: 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm etc.Production: according to customer's drawings or request.