MHD112C-058-NP3-AN
MHD Synchronous Motors
The MHD112C-058-NP3-AN from Bosch Rexroth Indramat features a liquid cooling housing and a keyed shaft design. Part of the MHD Synchronous Motors series, it delivers 38 Nm continuous torque at standstill and includes a digital servo feedback encoder. This servo motor has a winding code of 058 and a centering diameter of 130 mm.
Equipped with a 70 Nm holding brake and 192 mm flange size, it ensures secure positioning. It has motor length C and a side A output connector. It weighs 45 kg without accessories.
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
Keyed 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
How does the HSF digital servo-feedback on MHD112C-058-NP3-AN aid commutation accuracy and servo stiffness?
The HSF provides high-resolution, digital position data with deterministic timing for minimizing phase error for field-oriented control. Its cleaner electrical signaling improves loop gain and disturbance rejection versus analog interfaces, especially over longer cable runs.
What advantages do the keyed shaft and shaft seal provide in MHD112C-058-NP3-AN for drivetrain reliability?
The keyed interface creates a defined shear plane that prevents micro-slip under cyclic torque for preserving coupling alignment. Its seal limits lubricant and coolant ingress to stabilize bearing life and maintains encoder cleanliness in washdown or mist-laden environments.
How does liquid cooling on the MHD112C-058-NP3-AN influence continuous torque and thermal stability during demanding duty cycles?
It removes heat directly from the stator housing for keeping copper and magnet temperatures in a controlled band so the motor sustains rated standstill torque. Its lower winding resistance drift also sharpens current control and reduces thermal derating over long cycles.
Why is a 70 Nm holding brake valuable for vertical or safety-related axes on MHD112C-058-NP3-AN?
It secures loads during power loss or servo disable to reduce risks of back-driving ballscrews or belts. It allows faster e-stop deceleration settings while maintaining position without relying solely on motor torque.
What integration considerations follow from the 192 mm flange and 130 mm centering diameter on MHD112C-058-NP3-AN?
The 130 mm pilot registers concentricity for keeping radial runout low and easing shaft alignment. Its standardized 192 mm pattern simplifies retrofits onto Rexroth and ISO-pattern gearboxes and frames for reducing adapter plates and bearing preload error during assembly.
Common Misspellings
MHD112C058NP3AN
MHD112C 058 NP3 AN
mhd112c-058-np3-an
Internal Product Review
The Bosch Rexroth Indramat’s MHD112C-058-NP3-AN servo motor comes with a 70 Nm holding brake and a keyed shaft that enhances holding and torque transfer. It manages thermal stability through liquid-cooled housing. This motor possesses an HSF digital feedback encoder for accurate control to suit machine tools, printing, packaging and material handling.
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