R911305943 (MHD112A-035-NP0-BN)

Name: R911305943 (MHD112A-035-NP0-BN)
Brand: Indramat Motors
SKU: MHD112A-035-NP0-BN
Price: 705.00 USD
Availability: InStock

MHD Synchronous Motors

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The R911305943 (MHD112A-035-NP0-BN) is a brushless servo motor from the Bosch Rexroth MHD series, utilizing electronic commutation and special permanent magnet rotor materials for reduced inertia and a high torque-to-inertia mass ratio. Key features include a continuous standstill torque of 15.0 Nm, rated speed of 2000 rpm, and maximum speed capability up to 4000 rpm. The unit measures 192 mm at the flange with a 130 mm centering diameter, supports a keyed shaft with shaft seal, and features liquid cooling. It employs a digital servo feedback encoder with optical measurement, providing relative position detection and system accuracy of ±0.5 angular minutes. The bearing system, designed for 30,000 hours of operation, accommodates high axial and radial loads for applications such as overhung pinions or pulleys. The power output connector is oriented to side B. Configuration excludes a holding brake and uses winding code 035.

Technical Specifications

Product Type
Servo Motor

Size
192mm

Centering Diameter
130mm

Operational Reliability
High

Maintenance
Maintenance-free

Design
Brushless

Bearing Lubrication
Lifetime-lubricated

Bearing Load
High radial loads

Bearing Life
30,000 hours

Motor Encoder
Digital Servo Feedback

System Accuracy
+/- 0.5 angular minutes

Measurement Method
Optical

Electronic Commutation
Present

Rated Speed
2,000 revolutions per minute

Maximum Speed
4,000 revolutions per minute

Rotor Material
Special permanent magnet

Inertia Mass
Low

Torque-to-Inertia-Mass Ratio
High

Overload Capability
High

Frequently Asked Questions

Why does the MHD112A-035-NP0-BN use a relative position detection system instead of an absolute one?

A relative system reduces encoder complexity and cost while maintaining high precision after referencing. It’s ideal when machines regularly perform homing cycles during startup.

What are the benefits of using a keyed shaft in servo motor couplings?

A keyed shaft prevents slippage under high torque, ensuring consistent mechanical alignment. It simplifies installation in direct-drive or belt-driven systems.

How does the flange size of 192 mm influence mounting compatibility?

The 192 mm flange aligns with standardized mounting interfaces for heavy-duty servo applications. It provides rigidity and minimizes vibration transfer to the machine frame.

What installation precautions are needed when connecting the power output to side B?

Ensure sufficient clearance on side B for the connector and cable bend radius. This orientation helps route cables away from moving machine parts or coolant lines.

Can the MHD112A-035-NP0-BN operate continuously at rated torque without derating?

Yes, provided the cooling system maintains proper flow and temperature. Continuous operation at 15.0 Nm is achievable without thermal overload in such conditions.

Common Misspellings

MHD112A035NP0BN

MHD112A 035 NP0 BN

mhd112a-035-np0-bn

Internal Product Review

The MHD112A-035-NP0-BN is a Bosch Rexroth Indramat industrial servo motor designed for precision automation systems. It features liquid cooling, a digital servo feedback encoder with relative position detection, and delivers 15.0 Nm torque at standstill. It is commonly used in CNC machining centers, packaging lines, and printing machinery for accurate motion control.