R911292678 (MHD112C-058-PG3-RN)

Name: R911292678 (MHD112C-058-PG3-RN)
Brand: Indramat Motors
SKU: MHD112C-058-PG3-RN
Price: 290.00 USD
Availability: InStock

MHD Synchronous Motors

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1 Year Warranty Included
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Current response time:

4 Minutes 24 Seconds

Phone:
1-888-551-3082

Email:
sales@indramat-usa.com

The MPN R911292678 (MHD112C-058-PG3-RN) is a Bosch Rexroth synchronous servo motor featuring a 45 kg mass, 4 pole pairs, and a plain shaft for torque transmission. It is equipped with an integrated multiturn absolute encoder for digital feedback beyond 4096 revolutions. The motor has a voltage constant of 72.7 V/1000min-1 and a torque constant of 0.8 Nm/A at 20°C. Inductance and resistance are 1.5 mH and 0.12 ohms, respectively. Designed for both natural and liquid cooling within an IP65-rated housing, it includes a holding brake with a 70 Nm torque and 53/97 ms connection/disconnection times. The maximum torque output is 148 Nm, with a continuous torque at standstill of 38 Nm, and the maximum speed is 4500 rpm. The power connection is situated on the right side of a 130 mm centering diameter, 192 mm flange size housing. Fluid at the output shaft can impact performance in IM V3 mounting.

Technical Specifications

Product Type
Synchronous Motor

Temperature Constants
72.7 V/1000min-1 at 20 degrees Celsius

Torque Constants
0.8 Nm/A at 20 degrees Celsius

Shaft Type
Plain

Weight
45 kg

Housing
Suited for Natural and Liquid Cooling

Protection Level
IP65

Polar Pairs
4

Winding Inductivity
1.5 mh

Winding Resistivity
0.12 ohm

Brake Connection Time
53 ms

Brake Disconnection Time
97 ms

Brake Weight
3.8 kg

Brake Holding Torque
70 Nm

Rated Current Consumption (Surface Cooling at 100 K)
43 A

Rated Speed
3500 rpm

Rated Torque
43.5 Nm

Max Torque Generation
148 Nm

Max Speed
4500 rpm

Thermal Time Constant (Natural Cooling at 100 K)
90 mins

Rated Power
8 kW

Rated Frequency
233 Hz

Frequently Asked Questions

What control advantages come from the MHD112C-058-PG3-RN’s low inertia-to-torque ratio?

Its reduced reflected inertia accelerates and decelerates the load quickly with lower current peaks for improving following error and loop bandwidth. Its result is crisper indexing, shorter takt times and tighter contour accuracy.

Why is a multiturn absolute encoder (>4096 revolutions) valuable on MHD112C-058-PG3-RN axes?

It eliminates homing after power loss for restoring exact mechanical zero and cutting non-productive time. Its absolute tracking across many turns also improves synchronization and recovery in coordinated multi-axis machines.

How does the 70.0 Nm holding brake on the MHD112C-058-PG3-RN benefit vertical or safety-related axes?

The brake sustains load position without continuous motor energization for reducing heat and power draw during holds. It also mitigates back-drive risks on Z-axes or gantries during E-stop and maintenance.

In retrofits, how do the 130 mm centering diameter and 192 mm flange of MHD112C-058-PG3-RN help?

These mounting interfaces align with common motor plates for simplifying mechanical exchange with minimal adapter hardware. It shortens installation time and preserves shaft-to-load concentricity.

What is the impact of minimized cogging torque and vibration in the MHD112C-058-PG3-RN rotor design?

Its lower cogging smooths low-speed velocity ripple for enhancing finish quality in CNC contouring and web handling. Its reduced vibration also eases servo tuning for enabling higher gains without exciting structural resonances.

Common Misspellings

MHD112C058PG3RN

MHD112C 058 PG3 RN

mhd112c-058-pg3-rn

Internal Product Review

The Rexroth Indramat’s MHD112C-058-PG3-RN servo motor integrates digital feedback and multiturn absolute position detection. Its offers 38 Nm standstill torque and possesses a 70 Nm brake to suit precision axes. The unit's right-sided power connector, 130 mm pilot and 192 mm flange eases drop-in retrofit. It is applied in packaging, CNC, printing and textile systems.