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R911309075 (MHD112B-024-NP0-LN)

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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The R911309075 (MHD112B-024-NP0-LN) is a Rexroth Indramat MHD series servo motor designed for versatile operation with natural convection or liquid cooling. The motor features 112 windings, B-frame length, and a keyed shaft equipped with a shaft seal. It has a centering diameter of 130 mm, flange size of 192 mm, and weighs 34 kg. The standard speed is 2000 rpm, with a maximum of 4000 rpm, and it supports operating temperatures from 0°C to 40°C within insulation class 155. This unit achieves a continuous standstill torque of 28.0 Nm and a maximum theoretical torque of 102 Nm. It uses a digital servo feedback encoder for relative position detection, has its power connector oriented to the left, and does not include a holding brake. The winding code is 024.

Technical Specifications

Motor Type
Servo

Cooling Type
Natural convection/Liquid Cooling

Winding Designation
112

Frame Length Designation
B

Operating Temperature Range
0 - 40 °C

Insulation Class
155

Weight
34 kg

Characteristic Speed
2000 revolutions/min

Max Speed
4000 revolutions/min

Winding Inductivity
7.6mH

Encoder
Digital Servo Feedback

Connection Design
Rotatable plug

Motor Components
Shaft, Sealing Ring, Keyway

Theoretical Max Torque
102Nm

Torque Constant at 20°C
1.43Nm/A

Continuous Torque at Standstill (60K Overtemperature, Natural Convection)
28.0Nm

Continuous Standstill Current (60K Overtemperature, Natural Convection)
21.9A

Can the MHD112B-024-NP0-LN motor be integrated with left-side power connectors in tight enclosures?

Yes, the leftward power connector simplifies cable routing where right-side access is limited. It supports compact cabinet layouts and reduces electromagnetic interference by separating power and signal paths.

How does liquid cooling compare to air cooling in maintenance and reliability?

Liquid cooling requires sealed systems and coolant management but provides superior heat dissipation. It prolongs component life and maintains consistent torque under demanding cycles.

What is the practical impact of a centering diameter of 130 mm on motor mounting?

The 130 mm centering diameter ensures stable alignment between motor and gearbox or load interface. This reduces vibration and mechanical stress during continuous operation.

Why is a keyed shaft design preferred in many automation systems?

A keyed shaft ensures secure torque transfer between the motor and driven component. It minimizes slippage during high-load or stop-start operations common in CNC or conveyor applications.

What type of applications benefit from the liquid cooling system in the MHD112B-024-NP0-LN motor?

Liquid cooling allows continuous high-torque operation by efficiently managing thermal loads. It’s ideal for high-duty-cycle machinery such as printing presses, injection molding, and robotics.

MHD112B024NP0LN

MHD112B 024 NP0 LN

mhd112b-024-np0-ln

Internal Product Review

The Bosch Rexroth Indramat MHD112B-024-NP0-LN Servo Motor is part of the MHD Synchronous Motors series. It provides 28.0 Nm torque with liquid cooling and digital servo feedback. Its 192 mm flange and keyed shaft make it ideal for automation, CNC machining, and packaging industries.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MHD112B-024-NP0-LN.
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