R911282657 (MHD112B-048-PG1-BN)

Name: R911282657 (MHD112B-048-PG1-BN)
Brand: Indramat Motors
SKU: MHD112B-048-PG1-BN
Price: 696.00 USD
Availability: InStock

MHD Synchronous Motors

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The Bosch MPN R911282657 (MHD112B-048-PG1-BN) is an MHD-series servo motor equipped with a fully sealed housing rated IP65 for comprehensive protection against contaminants and oil ingress. Designed for close-coupled installations, this motor features power connection on side B and achieves cooling through natural or surface convection, with support for liquid cooling. Under 60K and 100K operational conditions, it delivers continuous torques of 28 Nm and 33 Nm, increasing to 42 Nm with surface cooling, and draws currents of 35.6, 43.5, and 53.4 A, respectively. The unit integrates digital servo feedback with a multi-turn absolute encoder (capable of over 4096 revolutions) and includes a holding brake rated at 22 Nm. The motor has a plain shaft with seal, flange size of 192 mm, centering diameter of 130 mm, motor size 112, and weighs 34 kg. Installation is to be performed by qualified personnel.

Technical Specifications

Type
MHD Servo Motor

Housing
Completely Sealed

Protection Rating
IP65

Motor Shaft
Plain with Sealing Ring

Installation Method
Near Operating Machinery

Power Connector Location
Side B of Housing

Cooling Method
Natural Convection or Surface Cooling

Continuous Motor Torque at Standstill (60K Condition, Natural Convection)
28 Nm

Continuous Motor Current at Standstill (60K Condition, Natural Convection)
35.6 Amps

Continuous Motor Torque at Standstill (100K Condition, Natural Convection)
33 Nm

Continuous Motor Current at Standstill (100K Condition, Natural Convection)
43.5 Amps

Continuous Motor Torque at Standstill (60/100K Condition, Surface Cooling)
42 Nm

Continuous Motor Current at Standstill (60/100K Condition, Natural Convection)
53.4 Amps

Servo Feedback
Digital with Integrated Multiturn Absolute Encoder

Holding Brake
22 Nm

Flange Size
192 Millimeters

Centering Diameter
130 Millimeters

Shipping Weight
34 Kilograms

Installation Requirements
Qualified and Experienced Personnel Only

Frequently Asked Questions

Can the MHD112B-048-PG1-BN maintain position under load during system shutdowns?

It includes a 22.0 Nm holding brake for static load retention when power is removed. This provides reliable braking in vertically loaded or idle-state axes.

How is accurate axis tracking achieved in high-precision automation systems?

The integrated digital encoder supports absolute position detection. This ensures consistent referencing without the need for homing after power cycles.

What thermal strategy supports torque stability during long production runs?

The liquid-cooled housing actively removes heat from the motor core. This protects against thermal saturation in continuous operation environments.

How does the shaft interface resist contamination in exposed machine zones?

The plain shaft is sealed to prevent ingress from dust or fluids. This enhances long-term reliability in harsh or open-frame applications.

Is this motor capable of sustaining force output at zero rotational speed?

It delivers 28.0 Nm continuous torque at standstill for stable static load control. This is critical for applications involving dwell or precision holds.

Common Misspellings

MHD112B048PG1BN

MHD112B 048 PG1 BN

mhd112b-048-pg1-bn

Internal Product Review

The model MHD112B-048-PG1-BN is a liquid-cooled servo motor from Bosch Rexroth featuring a sealed plain shaft. It integrates a digital feedback encoder, absolute position detection, and a 22.0 Nm rated holding brake for precision control. It confidently delivers 28.0 Nm torque at standstill, ensuring reliable performance.