Product Description:

Bosch Rexroth Indramat builds the MHD090B-047-NP1-UN as a synchronous servo motor in the MHD Synchronous Motors series. The motor has size 090, frame length B, and winding code 047. It is supplied with a keyed shaft and a factory-mounted holding brake for load retention when power is removed. Its synchronous design allows it to work with a compatible drive for precise speed regulation and position control during indexing, transfer, and coordinated axis movement. This unit is commonly used on packaging lines, gantries, and other automation axes that require closed-loop rotary positioning and repeatable motion control.

The electrical section produces a continuous standstill torque of 12.0 Nm, allowing the axis to hold a load at zero speed under rated current. A holding brake rated at 11.0 Nm supports load retention during power-off conditions. Heat is removed through liquid cooling, so the stator can operate within the limits of Class F insulation. The housing is sealed to IP65, which helps keep dust and water jets away from the internal laminations. Position feedback is generated by digital servo feedback (HSF), allowing relative position detection and fast commutation for servo control. The feedback channel gives the drive the rotor data needed for responsive current control during acceleration and deceleration.

The mechanical interface uses a 140 mm square flange and a 110 mm centering diameter to align the motor accurately in machine frames. Power and feedback connectors can be rotated through 270°, which helps when cable routing space is limited, and a shaft seal reduces the chance of coolant entering at the keyway. The optical measurement method inside the encoder achieves a system accuracy of ± 0.5 angular minutes across the operating range. Operation is permitted at ambient temperatures from 0 to 40 °C and at elevations up to 1000 m above sea level. Safe storage remains within -20 to +80 °C. These mounting and connection features help the motor fit compact machine layouts without forcing sharp cable bends near the housing.