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R911293671 (MHD112A-058-NP0-BN)

MHD Synchronous Motors

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1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping

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6 Minutes 46 Seconds

The R911293671 (MHD112A-058-NP0-BN) is a Bosch Rexroth synchronous servo motor designed for demanding industrial applications. It features a brushless construction with 4 pole pairs and delivers a continuous torque of 15.0 Nm and a torque constant of 1.28 Nm/A at a voltage constant of 116.4 V per 1000 min-1 at 20 °C. The unit measures motor size 112 with a centering diameter of 130 mm, flange size of 192 mm, and an 'A' motor length, weighing 23 kg. It is equipped with an IP65-rated enclosure, class F insulation, grease-lubricated bearings, a keyed output shaft with shaft seal, and a side B power connection using an output connector. The housing supports liquid cooling, and position feedback is provided via digital servo feedback (HSF) with relative position detection. This configuration is delivered without a holding brake and is finished in black prime coating for environmental resilience.

Technical Specifications

Functionality
Extended Scope

Performance
Scalable

Constant Torque at 20C
1.28 Nm/A

Voltage Constant
116.4 V/1000 min-1

Weight of Motor
23 kg

Protection Rating
IP65

Design
Brush-less, 4 pole pairs

Lubrication
Grease

Insulation Class
F

Color
Black

Ambient Temperature Requirement at 60K
314V

Ambient Temperature Requirement at 100K
332V

Cooling Type
Natural

Power Connection Location
B Side

Holding Brakes
No

Output Shaft Type
Key-way.

How does liquid cooling in the MHD112A-058-NP0-BN improve motor performance?

Liquid cooling maintains stable operating temperatures under high loads, allowing continuous torque delivery without thermal derating. It also extends bearing and winding life by minimizing thermal cycling.

How does relative position detection affect system startup behavior?

Relative detection requires homing at startup to establish an absolute reference. This ensures repeatable positioning accuracy after power loss or shutdown.

How does a centering diameter of 130 mm influence mounting precision?

The centering diameter defines the alignment reference between motor and machine flange. Tight tolerances ensure low vibration and accurate shaft alignment during operation.

What maintenance advantages come from using liquid-cooled housing over air-cooled types?

Liquid systems require less airflow management and reduce contamination from dust or oil mist. They’re ideal in sealed environments where air cooling would be inefficient.

How does motor length “A” affect integration into automation equipment?

A shorter motor length allows tighter machine designs without sacrificing torque. It enables installation in linear actuators or compact mechanical frames.

MHD112A058NP0BN

MHD112A 058 NP0 BN

mhd112a-058-np0-bn

Internal Product Review

The Bosch Rexroth Indramat MHD112A-058-NP0-BN is a synchronous servo motor from the MHD series. It features liquid cooling, a keyed shaft, and digital servo feedback, and it delivers 15.0 Nm continuous standstill torque. It is used in CNC machinery, robotics, and printing automation systems for high-precision, continuous-duty motion control.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MHD112A-058-NP0-BN.
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