Bosch Rexroth R150221085 Ball Screw Nut FEM-E-C 25X5RX3-4

Bosch Rexroth R150221085 Ball Screw Nut FEM-E-C 25X5RX3-4 is a flanged, single ball nut from the FEM-E-C family, designed for use with Rexroth ball screw assemblies where a flange-mounted nut is required. This nut converts rotary motion to precise linear travel with low friction and is specified as part number R150221085. It carries a dynamic load rating of 15,900 N and a static load rating of 27,200 N, with a maximum recommended linear speed of 30 m/min, making it suitable for precision positioning tasks. The nut weighs about 0.84 lb (approximately 0.38 kg). A manufacturer note indicates this model is discontinued, with R150221083 listed as its successor. The FEM-E-C 25X5RX3-4 variant is for compact 25 mm diameter screw systems where a flange-type mounting is required, complementing the corresponding ball screw to achieve repeatable positioning in automation and machine tools.