KSM02.1B-041C-42N-M1-HG0-ET-NN-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HG0-ET-NN-D7-TO-FW is built by Bosch Rexroth Indramat as part of the KSM Motor Integrated Servo Drives series. It combines a permanent-magnet servo motor, an inverter, and network electronics in one housing, allowing the axis to mount directly on a machine without a separate drive cabinet. This arrangement provides closed-loop torque and position control at the load, which shortens feedback paths and reduces wiring complexity in distributed automation cells. The integrated design also reduces the number of separate components that must be installed around the machine axis.

The drive section is supplied by a high-energy DC link rated at DC 750 V, matching common multi-axis bus supplies used in packaging lines. Power, feedback, and fieldbus signals share a single hybrid connector, so only one cable set runs between the motor and the trunk line. Internal heat is removed through natural convection, allowing the housing to operate without fans or liquid-cooling channels. Motion commands and diagnostic data travel through Multi-Ethernet ports, which support standard real-time communication protocols selected through the system configuration. The electromagnetic design uses winding code 42, which establishes the stator winding arrangement and the current characteristics expected by a compatible Rexroth supply module.

Position feedback is generated by an optical encoder that delivers 128 signal periods per revolution and retains position data after power loss through its multi-turn absolute capability. The sensing head uses the Hiperface format, enabling compatible IndraDrive controllers to recognize and process its feedback signals. A plain shaft transmits torque without a keyway, while an integral shaft seal helps keep lubricant and contaminants away from the internal motor components. The product belongs to Series 2 and uses Design Version 1. It has a 041 frame size and a C-length motor stack. The unit is supplied without a holding brake, so an external mechanism or drive-applied torque must retain the load when necessary. It does not include integrated safety technology and has a basic performance rating, making external safety controls necessary when the application requires safety functions.