MHD112D-027-NG3-AN Bosch Rexroth Indramat
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MPN: R911286196
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The Bosch Rexroth Indramat MHD112D-027-NG3-AN is a servo motor from the MHD Synchronous Motors series with a continuous torque at standstill of 48.0 Nm and a plain shaft design. It features a flange size of 192 mm, a centering diameter of 130 mm, and is equipped with liquid cooling and a holding brake providing 70.0 Nm of torque. The motor uses a digital servo feedback encoder for relative position detection.
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Product Description:
The MHD112D-027-NG3-AN is a servo motor built by Bosch Rexroth Indramat within the MHD Synchronous Motors series. It converts drive controller current into mechanical rotation for positioning axes, gantries, and transfer stations in automated cells. Through the series’ standardized mechanical interface, the unit integrates readily into liquid-cooled machine modules where continuous torque density and closed-loop feedback are required. Its synchronous motor design also supports accurate speed regulation and repeatable positioning during cyclic machine operation.
Installation geometry includes a centering diameter of 130 mm, which locates the stator concentrically to adjoining housings. A flange size of 192 mm provides the bolt circle for rigid attachment and even load distribution. At standstill, the motor delivers 48.0 Nm of continuous torque, so it can sustain load without excessive heating during slow or static cycles. The housing uses liquid cooling, allowing waste heat to be removed through an external circuit instead of relying on ambient airflow. This cooling method helps the motor operate in enclosed machine sections where free air movement is limited. The series-specific frame code 112 places the motor in a medium-power size range with a predictable inertia and torque envelope.
Dynamic arrest is handled by an integrated brake rated for 70.0 Nm, enabling vertical loads to be secured when the drive is disabled. Output power is transmitted through a plain shaft, so couplings or pulleys can be mounted without key geometry that might concentrate stress. Rotor position is reported through digital servo feedback (HSF), supplying high-resolution incremental data for relative position tracking and stable speed control. Electrical characteristics are matched to winding code 027, which sets resistance and inductance values so the drive can apply appropriate current and voltage limits. This arrangement supports controlled stopping, consistent motion response, and reliable integration with the axis transmission components.
