A step up from ball screws, the Recirculating Roller Screw (RRS) is designed as an alternative to standard roller screws when space constraints and fine leads are an issue. Unlike planetary roller screws, it allows rollers guidance within a cage to recirculate inside the nut assembly thanks to cams. This design is ideal for applications where long strokes where smaller leads are needed with high capacity in reduced envelopes. It is available with a cylindrical or flanged nut. Screw leads are typically in the range of 1 or 2mm.
This design offers a perfect compromise when you are looking for capacity, resolution and accuracy and very low driving torque on a long stroke, all at the same time.