The EWELLIX roller screw (planetary screw) is a mechanical form in which the screw shaft and nut raceway are built into steel balls and then subjected to infinite rolling and circulation, resulting in the conversion of rotary motion into precise linear positioning motion. It consists of screws, nuts, steel balls, pre-pressing sheets, inverters and dust preventers. Its main function is to convert rotary motion into linear motion.
The characteristics of roller screws include high precision, high rigidity, high load capacity, high reliability, low friction coefficient, etc. The nuts of roller screws are usually integrally hardened to increase their hardness and wear resistance, so that they can withstand high loads and high-precision processing requirements. Roller screws are widely used in CNC machine tools, industrial robots, semiconductor equipment and other fields. Nut type prefix Nut internal design SR Planetary roller screw BR with axial clearance Planetary roller screw PR without backplay Planetary roller screw PRM with split nut pre-tightened Planetary roller screw SV with double nut pre-tightened Circulatory roller screw BV with axial clearance Gap-free circulating roller screw PV Circular roller screw PVM with split nut pre-tightened Planetary roller screw pre-tightened by double nut method
