R911286195 (MHD112B-048-NG1-AN)

Name: R911286195 (MHD112B-048-NG1-AN)
Brand: Indramat Motors
SKU: MHD112B-048-NG1-AN
Price: 831.00 USD
Availability: InStock

MHD Synchronous Motors

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The Bosch Rexroth MPN R911286195 (MHD112B-048-NG1-AN) is a synchronous servo motor with a rated voltage range of 227 to 251 V, an operating frequency of 187 Hz, and a rated speed of 2800 rpm. It is equipped with a plain output shaft and shaft seal, a holding brake providing 22 Nm torque, and features liquid cooling for the housing. The motor is capable of continuous torque at standstill of 28 Nm and reaches a maximum torque output of 102 Nm at a peak current of 160 A. It has a digital servo feedback (HSF) encoder for relative position detection, a flange size of 192 mm, centering diameter of 130 mm, and a motor length classified as size B. The power connection is to side A, using an output connector. Unit weight is 34 kg, with an additional 1.1 kg for the holding brake. This servo motor is finished in prime black and delivers up to 11 kW output power with winding code 048.

Technical Specifications

Output Shaft
Plain

Rated Voltage
227-251 V

Operating Frequency
187 Hz

Rated Speed
2800 rpm

Pole Pairs
4

Motor Winding Inductivity
3.1 mH

Torque Constant
0.88 Nm/A

Clamping Brake Holding Torque
22 Nm

Motor Weight
35.1 kg

Power Connector Position
A-side top

Maximum Speed
4500 rpm

Peak Current
160 A

Maximum Torque
102 Nm

Thermal Time Constant (Surface Cooling)
20 mins

Thermal Time Constant (Natural Cooling)
40 mins

Motor Housing Color
Prime black

Maximum Output Power
11 kW

Frequently Asked Questions

How does the shaft design affect coupling reliability in repetitive drive cycles?

The plain shaft offers a clean interface for zero-backlash couplings. It supports consistent torque transfer in high-frequency mechanical loads.

Does the MHD112B-048-NG1-AN retain axis stability during shutdown in load-bearing conditions?

It includes a 22.0 Nm holding brake to secure the shaft under power-off scenarios. This helps maintain position in vertically oriented or safety-critical systems.

How is heat managed during full-torque dwell periods in sealed installations?

The liquid cooling circuit stabilizes internal temperatures during prolonged standstill torque. This prevents thermal overload in restricted airflow environments.

Is feedback accuracy maintained after restarts in multi-axis motion systems?

It uses a digital HSF encoder with relative detection. Homing is required on startup to recover position in closed-loop configurations.

Can this motor align precisely in standard industrial mounting brackets?

With a 192 mm flange and 130 mm centering diameter, it fits common servo mounting standards. This ensures secure positioning and simplifies mechanical integration.

Common Misspellings

MHD112B048NG1AN

MHD112B 048 NG1 AN

mhd112b-048-ng1-an

Internal Product Review

The Bosch Rexroth Indramat MHD112B-048-NG1-AN servo motor is equipped with a 22.0 Nm holding brake for reliable motion control. It delivers 28.0 Nm continuous standstill torque, includes liquid cooling, HSF encoder with relative feedback, and mounts via a 192 mm flange. Its plain shaft ensures smooth, backlash-free transmission.