R911309857 (MHD112B-035-NP1-BN)

Name: R911309857 (MHD112B-035-NP1-BN)
Brand: Indramat Motors
SKU: MHD112B-035-NP1-BN
Price: 228.00 USD
Availability: InStock

MHD Synchronous Motors

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Phone:
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Email:
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The MPN R911309857 (MHD112B-035-NP1-BN) is a synchronous servo motor designed for industrial automation tasks. It provides a continuous standstill torque of 28.0 Nm and a theoretical peak torque of 231 Nm, with a rated power output of 8 kW and a maximum rated speed of 2500 RPM. The motor features digital servo feedback (HSF) for relative position detection, a keyed shaft with sealing ring, and operates effectively in ambient temperatures from 0 to +40°C at elevations up to 1000 meters. Electrical parameters include a winding inductivity of 5.5 mH and a resistance of 0.43 ohms. The motor incorporates a holding brake rated at 22.0 Nm, offers liquid cooling, and supports power connections at side B via output connectors. The housing meets IP65 and insulation class F standards, weighs 34 kg, and is finished with a protective black paint for increased durability.

Technical Specifications

Servo Feedback
Digital

Shaft Type
Key with Sealing Ring

Max Theoretical Torque
231 Nm

Thermal Time Constant
20-40 minutes

Working Temperature
0 to +40 degrees Celsius

Winding Inductance
5.5 mH

Winding Resistance
0.43 ohms

Rated Power
8 kW

Rated Current
16.6 A

Rated Rotating Speed
2500 revolutions per minute

Weight
34 kg

Insulation Grade
F

Protection Level
IP 65

Maximum Height for Mounting
1000 meters above sea level

Power Connector Location
B Side

Natural Cooling Output
33.1 Nm

Current Consumption in Surface Cooling
21.7 A

Housing Coating
Black Paint (40 m thickness)

Cooling Method
Natural and Surface Cooling.

Frequently Asked Questions

How does the digital servo feedback (HSF) encoder improve control precision?

It provides high-resolution feedback to the drive for smoother motion and accurate positioning. This reduces lag and ensures precise synchronization in automated systems.

How does relative position detection affect system startup calibration?

Because the encoder tracks relative movement, a reference homing sequence is required on power-up. This ensures the system accurately identifies zero position before operation.

In what situations would the MHD112B-035-NP1-BN’s 22 Nm holding brake be critical?

It’s essential for vertical-axis or safety-critical applications where power loss could cause drift. The brake maintains mechanical position until drive torque is restored.

How does side B power connection orientation affect cabinet or cable layout?

It directs the output connector to a specific side of the installation, simplifying cable management. Designers must ensure adequate clearance for connectors and bend radius.

Which types of machinery commonly integrate motors like the MHD112B-035-NP1-BN?

They are typically used in CNC machines, industrial automation cells, and robotic systems. These applications demand high torque consistency and accurate servo feedback control.

Common Misspellings

MHD112B035NP1BN

MHD112B 035 NP1 BN

mhd112b-035-np1-bn

Internal Product Review

The MHD112B-035-NP1-BN is a Bosch Rexroth Indramat precision servo motor designed for demanding motion control tasks. It features liquid cooling, a digital servo feedback encoder, and a keyed shaft for reliable torque transmission. It is commonly used in CNC machinery, printing presses, and robotics systems for precise motion control.