Product Description:

The MKD090B-058-GG0-KN is a servo motor produced by Bosch Rexroth Indramat within the MKD Synchronous Motors series. Intended for CNC auxiliary axes, pick-and-place gantries, and general material-handling modules, the motor works as part of a closed-loop drive package where the controller commands precise speed and position. By supplying consistent torque and high dynamic response, it supports repetitive automation cycles. It integrates with compatible digital drive controllers through standard resolver feedback cabling.

At the mounting interface, a centering diameter of 110 mm aligns the stator housing with the machine frame, while a square flange of 140 mm mates with IEC and ISO gearbox patterns. The laminated rotor can deliver a continuous standstill torque of 12.0 Nm, enabling static holding or low-speed indexing without excessive temperature rise. Motion feedback is generated by resolver feedback (RSF), whose analog sine-cosine channels let the drive calculate sinusoidal commutation across a wide speed range and remain reliable in electrically noisy environments. Power and feedback conductors exit through a compact connection box on side B, allowing right-angle cable routing that keeps service loops clear of adjacent axes.

Mechanical proportions follow the 090 frame code and the B length designation, giving a mid-length body suitable for machines with limited depth behind the mounting face. The stator winding labeled 058 sets the motor’s voltage constant, current rating, and permissible bus voltage. Because the unit is supplied without a holding brake, load drift must be controlled by external clamps or motor torque. A plain shaft simplifies coupling alignment and minimizes tolerance stack-up, and the included shaft seal helps prevent coolant, oil, or airborne particles from entering the front bearing. The resolver provides relative position feedback, so the axis requires homing after power-up to establish an accurate reference position.