Product Description:

The MHD090B-058 is a servo motor built by Bosch Rexroth Indramat and supplied within the MHD Synchronous Motors series. It is intended for closed-loop industrial axes where consistent torque and precise positioning are required. When coupled to a compatible drive, the motor converts electrical energy into rotational motion for machine tools, packaging lines, and handling equipment. Its synchronous design supports accurate speed regulation and repeatable positioning during start, stop, and reversing cycles. This makes it suitable for applications that require stable motion at low speed and accurate response to command changes.

The motor delivers a continuous standstill torque of 12.0 Nm, so it can hold position under load without exceeding its thermal limit. A rectangular mounting interface with a 140 mm square flange uses a standard bolt pattern for attaching the housing to machine frames. The shaft seats against a pilot recess of 110 mm centering diameter, ensuring concentric alignment to the driven component and minimizing runout. Frame code 090 identifies the stator diameter used throughout the MHD range, which affects the motor's size and heat dissipation. Electrical characteristics are set by winding code 058, which gives the matching drive the correct resistance and inductance values for current control.

The stack length labeled B represents the second-shortest lamination pack offered for this frame, providing moderate inertia for rapid speed changes without excessive mass. Classified as a Servo Motor, the unit supports closed-loop velocity and position control rather than open-loop induction duty. It is commonly paired with Bosch Rexroth Indramat drive systems for coordinated motion on automated equipment. Within the MHD Synchronous Motors line, the motor uses the same general mounting concept found across related models. Such applications include feed drives, indexing motions, and handling axes with frequent starts and stops.