Product Description:

The MHD071B-035-NG2-UN is a servo motor manufactured by Bosch Rexroth Indramat as part of the MHD Synchronous Motors series. It converts controlled electrical power into rotational motion for positioning and speed-regulated axes in packaging lines, handling modules, and machine tools. Integrated feedback allows the drive controller to close the control loop and correct position or velocity errors in real time, making it a compact actuator for thermally demanding enclosures.

The motor can produce a continuous standstill torque of 8.0 Nm, so the axis can hold a load at standstill or during low-speed moves without exceeding thermal limits. An enclosure rating of IP65 blocks dust ingress and low-pressure water jets, allowing mounting near the work zone without a separate cabinet. Heat is removed through liquid cooling channels in the stator housing, which helps keep winding temperature low and permits higher current density than air-cooled designs. Position is measured by a digital servo feedback (HSF) encoder that uses an optical scanning method for fine signal generation. A flange dimension of 115 mm matches standard IEC mechanical interfaces, and the power leads and feedback cable exit on connectors that can rotate more than 270° to help prevent cable strain in confined frames.

During power-off stops, an integrated brake supplies 6.5 Nm of holding torque to secure vertical or suspended loads. The feedback chain achieves a positioning precision of ± 0.5 angular minutes, supporting interpolated moves where small tracking errors can damage tooling. The windings are insulated to class F, so continuous operation is allowed until conductor temperatures approach 155 °C without insulation breakdown. A centering pilot of 95 mm aligns the motor on the machine plate and helps minimize radial runout. The motor has a plain shaft with a shaft seal. It operates from 0 to 40 °C, can be stored from -20 to 80 °C, and can be installed up to 1000 m above sea level.