Product Description:

The MHD115B-035-NG1-BA is a rotary servo unit from Bosch Rexroth Indramat's MHD Synchronous Motors series. In automated production cells, it supplies closed-loop torque and speed so that indexing tables, gantry axes, and similar loads follow the programmed motion profile with repeatable precision. This arrangement lets the drive regulate acceleration, velocity, and standstill behavior during repeated machine cycles. Power exits on side B through an output connector, matching cabinets that route conduit from the non-drive end.

At stall, the motor can deliver 50.0 Nm, and a built-in brake supplies an extra holding capacity of 70.0 Nm during power-off conditions. The housing is sealed to IP65, allowing installation on machines that are exposed to airborne dust or coolant spray. A centering pilot of 180 mm and a square flange of 192 mm simplify rigid mounting to gearboxes or structural plates. This mounting geometry helps keep alignment stable when the motor is coupled to rigid drive components. Digital servo feedback in HSF format is obtained optically and communicates rotor position to the drive, while the relative measuring system supports closed-loop operation. Heat is removed by natural convection through the ribbed housing, and winding set 035 supports this thermal mode without auxiliary fans. The motor is length code B in size 115, uses a plain shaft with a factory-installed seal, and all conductors share one inbound path.

Total position deviation is held within ± 0.5 angular minutes, which suits high-resolution pick-and-place cycles. Class F insulation withstands hot-spot winding temperatures up to 155 °C, so continuous duty does not compromise dielectric strength. That thermal margin supports operation in enclosed machine spaces where winding temperatures rise under continuous load. The motor operates between 0 and 40 °C ambient and may be stored from −20 to +80 °C when the equipment is out of service. It can be mounted up to 1000 m above mean sea level without derating, and the plain shaft pairs directly with clamping couplings or shrink discs.