MHD112C-058-NG3-AN

MHD Synchronous Motors

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The MHD112C-058-NG3-AN from Bosch Rexroth Indramat features a Winding Code of 058 and a digital servo feedback encoder with relative position detection. Part of the MHD Synchronous Motors, this servo motor employs liquid cooling, delivers a continuous torque at standstill of 38.0 Nm and incorporates a centering diameter of 130 mm for precise alignment.

It is equipped with a holding brake rated at 70.0 Nm and utilizes a plain shaft design. The motor spans length C.

Technical Specifications

Holding Brake
With holding brake

Holding Brake Torque
70.0 Nm

Housing Cooling Type
Liquid cooling

Encoder Type
Digital servo feedback (HSF)

Type of Position Detection
Relative

Continuous Torque at Standstill
38.0 Nm

Motor Length
C

Centering diameter
130 mm

Flange size
192 mm

Motor Size
112

Shaft Design
Plain shaft

Shaft Seal
Yes

Power Connection Direction
to side A

Power Connection Type
Output Connector

Product Type
Servo Motor

Winding Code
058

Frequently Asked Questions

Why is a 70.0 Nm holding brake used, and how does it interact with servo control on MHD112C-058-NG3-AN?

The integrated brake prevents axis back-drive at power-off or during E-stop for securing vertical or overhauling loads. During motion, the drive releases the brake and uses closed-loop torque control, while at rest the brake torque supplements motor detent and static friction.

How does the liquid-cooled housing of MHD112C-058-NG3-AN impact continuous operation and thermal stability?

It enhances heat rejection from stator windings and laminations for maintaining winding temperatures within insulation class limits under sustained load. It supports repeatable torque delivery at standstill (38 Nm) and reduces thermal derating in enclosed cabinets or high-duty cycles.

What advantages does the digital servo feedback (HSF) with relative position detection give this motor?

The relative encoders provide high-resolution incremental data for smooth velocity and torque loops with low cogging and fine interpolation. After power-up, a reference move or marker alignment establishes absolute position for minimizing sensor complexity while maintaining dynamic accuracy.

How does the 38.0 Nm continuous torque at standstill translate to axis sizing for the product code MHD112C-058-NG3-AN?

That rating helps size static holding and low-speed feed axes without exceeding permissible temperature rise. Its engineers combine it with gear ratio, peak torque margin and duty cycle to ensure acceleration reserves and thermal equilibrium.

What is the role of the shaft seal on the plain-shaft design, and what should be considered during coupling selection for MHD112C-058-NG3-AN?

The seal limits ingress of coolant mist and particulates while retaining lubrication around the bearing front. It is recommenede to use backlash-free, misalignment-tolerant couplings (e.g., elastomer jaw or bellows) and avoid pressing loads through the seal lip during assembly.

Common Misspellings

Internal Product Review

Bosch Rexroth Indramat design MHD112C-058-NG3-AN servo motor for a rated torque of 38 Nm at standstill. It is equipped with a 70 Nm brake for safe operations and it possesses a sealed plain shaft. This unit relies on its built-in HSF digital feedback for monitoring and it has 130 mm centering diameter for simplifying precision alignment. It is suitable for CNC machine tools, packaging cells and printing/processing lines.