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R911291444 (MHD112D-027-PP0-RN)

MHD Synchronous Motors

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The Bosch Rexroth MPN R911291444 (MHD112D-027-PP0-RN) is a synchronous servo motor designed for use in automated machinery and motion control environments. It features an IP68-rated enclosure and F Class insulation, supporting operation at 27.6 A rated current and 133 Hz, with output power of 15.2 kW under surface cooling. The unit provides a torque constant of 1.7 Nm/A at 20°C, an inductivity of 5.65 mH, resistivity of 0.35 ohms, and a voltage constant of 154.5 V/1000min-1. Mechanical configuration includes a keyed shaft with seal, liquid cooling housing, digital servo feedback with integrated multiturn absolute encoder (>4096 revolutions), and continuous standstill torque of 48.0 Nm. The centering diameter is 130 mm, flange size 192 mm, and total weight is 56 kg. Power connection is positioned to the right via a power connector. No holding brake is fitted on this model.

Technical Specifications

Output Shaft
With Key and Sealing Ring

Protection Standard
IP68

Insulation Class
F

Power Generation (Surface Cooling)
15.2 KW

Rated Current
27.6 A

Rated Frequency
133 Hz

Winding Inductivity
5.65 mH

Winding Resistivity
0.35 ohms

Moment of Inertia
350 x 10-4 kgm2

Voltage Constant (at 20C)
154.5 V/1000min-1

Torque Constant (at 20C)
1.7 Nm/A

Constant Torque (Standstill Operation, Natural Cooling)
57 Nm

Continuous Current (Natural Cooling)
40.2 A

Power Connection
Right Side of Housing

Cooling Method
Surface and Natural

Weight
56 Kilograms

Thermal Time Constant (Surface Cooling)
40 Minutes

Thermal Time Constant (Natural Cooling)
90 Minutes

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1620 Old Apex Road
Cary, NC 27513, USA

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Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

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Toll Free: 1-888-551-3082
International: 1-919-443-0207

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