R911388857 (MSK075E-0450-NN-M2-UG1-RNNN)

MSK IndraDyn S Synchronous Motors

MSK075E-0450-NN-M2-UG1-RNNN Series Image

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The Bosch Rexroth R911388857 (MSK075E-0450-NN-M2-UG1-RNNN) is an IndraDyn S synchronous servomotor designed for high dynamic performance, typically applied in metal-forming machine tools. It features a plain shaft, shaft sealing ring, and increased concentricity. The integrated optical encoder employs EnDat2.1 interface with 2048 signal periods resolution, multiturn absolute, and supports a maximum speed of 12,000 min⁻¹. Continuous current at standstill (100 K) is 15.6 A, continuous torque at standstill is 23.0 Nm, and maximum torque is 88.0 Nm with a maximum current of 63.9 A. The winding inductivity is 4,460 mH, and cooling is achieved through natural convection. The motor includes an electrically-released holding brake with a torque of 23 Nm, requiring a 24V ±10% supply. The encoder connector is rotatable up to 240°. ATEX explosion protection classification applies and strict adherence to safety and connection standards is required during installation and operation. Cooling periods should be five times the thermal time constant.