KSM02.1B-041C-42N-M3-HG0-ET-NN-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M3-HG0-ET-NN-D7-TO-FW is a motor-integrated servo drive built by Bosch Rexroth Indramat and assigned to the KSM Motor Integrated Servo Drives series. By combining drive electronics and an AC servo motor in one housing, the unit streamlines installation inside handling robots, packaging machines, and compact assembly stations. It operates as a distributed axis on a DC bus and performs closed-loop position and velocity control at the machine level, reducing panel space and cable runs compared with cabinet-mounted amplifiers.

The drive accepts a bus supply of DC 750 V and dissipates heat through natural convection, eliminating the need for forced-air or liquid cooling. Power, signal, and communication lines are routed through a single hybrid connector, which simplifies field wiring for the size 041 stator frame. Feedback data from the rotor are delivered over a Hiperface interface with an internal sensor that resolves exactly 16 signal periods per mechanical revolution, providing adequate granularity for mid-range accuracy demands. Design version 1 incorporates winding code 42 and motor length C to balance torque density with the natural cooling path. The assembly uses a shaft seal at the output to retain lubricant.

A Multi-Ethernet interface supports SERCOS III, EtherNet/IP, PROFINET IO, and EtherCAT without additional hardware. The capacitive rotor sensor withstands vibration better than optical encoders and maintains absolute position through power cycles because it is a multi-turn device. Mechanical power is delivered through a plain shaft, making the drive compatible with backlash-free clamp couplings. The product is supplied without a holding brake and does not include integrated safety technology. It has a Basic performance level for applications that use external safety circuits.