We have 12mm（SFU1204），16mm(SFU1605，SFU1610，SFU1616)，20mm(SFU2005，SFU2010，SFU2020)，25mm，32mm，40mm，50mm，60mm，80mm  ball screw

The major differences between a rolled and ground ballscrew are the manufacturing process, the lead error definition and geometrical tolerances. Rolled ballscrews are made through a rolling process of the screw spindle instead of a grinding process. Rolled ballscrews provide smooth movement and low friction which can be supplied quickly from stock, at a lower production cost.