KSM02.1B-041C-42N-M1-HP2-ET-S3-D7-ES-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HP2-ET-S3-D7-ES-FW is manufactured by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines a motor, drive, and control electronics in one housing for decentralized positioning tasks on automated machines. Integrating the power electronics with the 041-frame motor reduces cabinet wiring and places motion control directly at the axis. This arrangement streamlines installation on conveyors, packaging stations, and assembly cells where cabinet space or cable routing is limited.

The drive section is supplied from a high-energy bus operating at 750 V DC. Power, feedback, and I/O lines are consolidated in a single hybrid connector to simplify field cabling. Heat is dissipated solely through natural convection, so no fans are required in enclosed machine spaces. The unit uses Multi-Ethernet networking to communicate with an external controller and support several real-time Ethernet protocols through one interface. Rotor position data are transmitted through a Hiperface interface, and the optical encoder provides 128 signal periods for precise speed regulation. The C-length motor uses winding code 42, design version 1, a basic performance level, and series index 2.

The feedback device is a multi-turn absolute encoder, so position is retained across 4,096 revolutions after power loss and is available for electronic homing routines. Integrated Safe Motion without SBC provides certified monitored-stop and limited-speed functions through the control network. A spring-applied, electrically released brake operates at 24 V DC and provides static holding torque when power or control commands are absent. Mechanical output is transmitted through a shaft with a keyway, which provides positive engagement with a compatible coupling or driven component. A shaft seal is fitted around the output interface to help prevent coolant and dust from entering the motor housing.