Product Description:

The MHD115B-035-NG1-AA is a servo motor built by Bosch Rexroth Indramat for the MHD Synchronous Motors series. With size code 115 and length code B, it fits mid-frame drive axes that need consistent electromechanical output. The winding code 035 indicates the electrical characteristics used with Indramat digital drives. A plain shaft transmits torque directly, and a shaft seal is fitted to limit ingress along the journal. Power and feedback cabling exit on side A through an output connector, supporting compact panel layouts. This motor positions or regulates loads in automated machinery where closed-loop accuracy is required.

At stall the rotor can supply 50.0 Nm of continuous torque, which sets the baseline for sizing mechanical loads and selecting matching drives. The enclosure carries a rating of IP65, meaning dust-tight construction and protection against low-pressure water jets. A flange circle of 192 mm and a centering diameter of 180 mm keep alignment consistent during installation. Position feedback is delivered by a Digital servo feedback (HSF) encoder that measures motion optically and operates on a relative reference track. Motor housing losses are dissipated by natural convection, allowing operation without external fans. Storage temperatures from -20 to +80 °C and a maximum installation height of 1000 m above mean sea level are permitted.

An integrated holding brake supplies 70.0 Nm so suspended loads remain stationary when the drive is de-energized. During motion, the system maintains a positioning tolerance of ± 0.5 angular minutes, supporting precise contouring. Full performance is available throughout an ambient range of 0 to 40 °C; outside this band derating is necessary. Class F insulation tolerates winding temperatures up to 155 °C and complements the passive cooling design. The plain shaft eases coupling to gearboxes or belt pulleys, while the shaft seal prevents contamination of the internal bearings.