KSM02.1B-041C-42N-M1-HP2-ET-NN-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HP2-ET-NN-D7-TO-FW is manufactured by Bosch Rexroth Indramat and belongs to the KSM Motor Integrated Servo Drives series. As a motor-integrated servo drive, it combines torque generation, position feedback, and drive electronics in one housing, allowing a single compact unit to be mounted directly on a moving axis. Its 041 frame size and C-length stator suit low-to-medium-power actuators that require accurate velocity and position control in packaging lines, pick-and-place gantries, and light assembly stations.

The drive section receives power from a 750 V DC bus, allowing it to share a common high-voltage link with other axis modules. Heat is removed through natural convection, so fans and liquid cooling connections are unnecessary when adequate ambient airflow is available. Power, feedback, and network signals pass through a single hybrid connector, reducing the amount of cabinet wiring and the number of separate cable connections. Rotor position is reported through the optical Hiperface interface, supporting digital commutation and rapid homing cycles. An electrically released holding brake engages when the 24 V control supply is removed, securing the load during shutdown. The motor uses winding code 42, which corresponds to the current and back-EMF characteristics required by the integrated drive electronics.

For machine control, the unit provides a Multi-Ethernet communication port that can support EtherNet/IP, PROFINET, EtherCAT, or SERCOS without changes to the installed communication hardware. The optical encoder delivers 128 signal periods per mechanical revolution, providing the feedback resolution needed for controlled motion. Its multi-turn counter retains the absolute position after a loss of power, reducing the need to repeat a reference movement when operation resumes. Mechanical output is transferred through a shaft with a keyway, providing positive torque transmission to pulleys, couplings, or gearboxes. A built-in shaft seal helps prevent lubricant migration and limits the entry of contaminants around the shaft opening. The drive operates at a basic performance level intended for standard position, velocity, and torque-control functions in industrial automation systems.