MHD112B-048-PG1-RN Bosch Rexroth Indramat
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MPN: R911294679
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The Bosch Rexroth Indramat MHD112B-048-PG1-RN is a servo motor from the MHD Synchronous Motors series, featuring a flange size of 192 mm and a centering diameter of 130 mm. It offers liquid cooling, a holding brake with 22 Nm torque, and has a continuous standstill torque of 28 Nm. The motor is equipped with digital servo feedback and integrated encoder with absolute position detection.
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Product Description:
The MHD112B-048-PG1-RN is a synchronous servo motor produced by Bosch Rexroth Indramat for the MHD Synchronous Motors series. It converts drive current into controlled rotary motion for positioning tasks in packaging lines, transfer systems, and other automated machinery. A digital servo feedback encoder is integrated for absolute position detection beyond 4096 revolutions, and the unit uses an optical measurement method to report rotor angle directly to the drive. This arrangement gives the controller position information across multiple turns instead of only within one revolution. It also supports stable feedback during synchronized moves, indexing sequences, and precise speed control.
The motor mounts to machines with a centering diameter of 130 mm and a flange that spans 192 mm, giving a stable interface for the size-112 frame. These dimensions help the motor seat accurately against the machine face and keep shaft alignment consistent. At standstill, it can deliver 28.0 Nm of continuous torque, and liquid cooling removes heat through the housing to support sustained output. The housing is rated IP65, which helps keep dust and water jets away from internal components. A plain shaft transmits power, and a shaft seal is fitted to limit contaminant entry and lubricant loss. The B-length stator, right-side power connector, and single cable for phase conductors help keep machine-side cable routing orderly.
A permanent-magnet holding brake supplies 22.0 Nm to keep the load stationary when power is off. The insulation system is graded Class F, allowing winding temperatures up to 155 °C during normal duty. Position repeatability is held within ± 0.5 angular minutes, which supports accurate placement in multi-axis assemblies where small angular errors can affect overall motion quality. The motor operates in ambient air from 0 to 40 °C, and storage is permitted from −20 °C to +80 °C. Installation is permitted up to 1000 m above mean sea level without derating, which suits typical indoor industrial elevations.
