KSM02.1B-041C-42N-S1-HG2-ET-SD-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-S1-HG2-ET-SD-D7-TO-FW is a motor-integrated servo drive from the Bosch Rexroth Indramat KSM Motor Integrated Servo Drives series. This compact unit combines a synchronous motor, encoder, power stage, and fieldbus node in one housing. Locating these elements directly on the axis simplifies decentralized automation layouts by reducing the number of separate components installed in a control cabinet. The drive provides precise torque and speed control for packaging, material-handling, and assembly equipment.

The actuator accepts a DC 750 V bus that is compatible with IndraDrive multi-axis supplies. Thermal energy leaves the housing through natural convection, so the installation requires unobstructed airflow around the unit. One hybrid connector carries the power, signal, and safety conductors, reducing the number of cable bundles routed along moving gantries. Frame size 041 and motor length C establish the physical envelope, while winding code 42 identifies the electromagnetic design used for the rated voltage. A plain shaft without a keyway provides the mechanical output interface, and a fitted shaft seal helps limit the entry of dust or coolant. The integrated Safe Motion (with SBC) functionality supports monitored stops and limited-speed operation. The unit has a basic performance level and design version 1, making it suitable for standard pick-and-place axes and other decentralized motion applications.

Networking is handled through the Multi-Ethernet platform, and the design includes Multi-Ethernet output coupling. The master communication interface supports PROFINET, EtherNet/IP, EtherCAT, and Sercos III over a common physical connection, allowing the drive to operate with several industrial network types. Position feedback uses a Hiperface interface connected to an optical sensor that produces 128 signal periods per revolution. The encoder uses a single-turn format to report rotor position within one mechanical revolution. An electrically released holding brake engages when control power is unavailable, helping prevent unwanted shaft movement while the axis is stopped. Applying DC 24 V releases the brake and allows the rotor to turn during normal operation. The product belongs to hardware series 2 and mounts directly on the machine frame as a decentralized drive axis.