HIWIN RSI cylindrical single nut ballscrews are rolled ballscrew nuts with a cylindrical housing, designed for simple transport and linear motion tasks where space is limited. The cylindrical form factor allows the nut to be fully integrated into the application, secured against twisting by means of a feather key and lubricated via a circumferential groove. Designed with axial play as standard, the RSI series is a cost-effective solution for general-purpose ballscrew applications that do not require preloading or high positioning precision. Compatible with HIWIN rolled ballscrew shafts.