MKD112C-024-GP3-BN

MKD Synchronous Motors

Rated 4.5 stars (7 total reviews)

Bosch Rexroth Indramat MKD112C-024-GP3-BN Front Right image

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The Bosch Rexroth Indramat MKD112C-024-GP3-BN is part of the high-performance MKD Synchronous Motors series and represents a robust Servo Motor solution. This MKD112C-024-GP3-BN features a compact Motor Size 112 housing with a Motor Length C profile, optimized for dynamic drive assemblies. The rotor is mounted on a precision Centering diameter of 130 mm and connects through a standardized Connection Direction Side B interface. At an operating mass of 38 kg and employing efficient Surface cooling, this motor balances power density and thermal control ideally for continuous-duty applications.

Engineered for precise motion control, the motor delivers a Continuous Torque at Standstill of 38.0 Nm and scales to peak performance with a Peak Current of 63.0 A. The electromagnetic design yields a Torque Constant of 2.41 Nm/A and a tightly wound Inductance Phase To Phase of 1.0 mH, ensuring rapid torque response. Feedback and positioning are handled by an integrated Resolver feedback (RSF) encoder, offering reliable Relative Position Detection. Shaft integrity is secured by a Shaft with keyway and protected by a Shaft Seal, while maintenance is simplified by the absence of additional Other Designs variants.

Safety and holding performance are reinforced with an integrated Holding Brake rated at 70 Nm torque, providing positive load retention when de-energized. The chosen Winding Code 024 tailors the motor's electrical characteristics for medium-speed operation without sacrificing efficiency. Whether used in decentralized automation cells or centralized control cabinets, the MKD112C-024-GP3-BN mounts seamlessly and integrates with standard Rexroth drive controllers. Its balance of torque capacity, precision feedback, and mechanical robustness makes this servo motor an ideal choice for precision machining, rotary indexing, and high-dynamic assembly processes.

Technical Specifications

Centering diameter
130 mm

Connection Direction
Side B

Connection Type
Output connector

Continuous Torque at Standstill
38.0 Nm

Encoder Type
Resolver feedback (RSF)

Flange size
192 mm

Holding Brake
With holding brake

Holding Brake Torque
70 Nm

Motor Length
C

Motor Size
112

Position Detection
Relative

Product type
Servo Motor

Shaft Design
Shaft with keyway

Shaft Seal
Yes

Winding Code
024

Frequently Asked Questions

Why do the 130 mm centering diameter and side-B power connection on MKD112C-024-GP3-BN simplify retrofit alignment and cabling?

The standardized 130 mm pilot on the 192 mm flange enforces coaxial registration for reducing radial runout and eases mechanical interchangeability. Its side-B connector orientation assists routing within cabinets or machine frames that expect “B-side” exits to shorten cable trays and bend-radius conflicts.

How do the stated Kt≈2.41 Nm/A and L12≈1.0 mH on MKD112C-024-GP3-BN affect current-loop bandwidth and torque ripple?

The higher torque constant improves torque per amp to reduce RMS current for a target load. Its low inductance supports high di/dt for enabling tight current-loop bandwidth. Controllers must compensate with appropriate PWM filtering and observer gains to suppress ripple and switching-edge artifacts (especially at higher DC-bus voltages).

Why specify a “shaft with keyway + seal” on MKD112C-024-GP3-BN, and what balancing assumption applies?

The keyed hubs transmit torque with defined backlash and hub-to-shaft shear capacity. Its seal supports ingress protection and grease retention.

What is the function of the 70 Nm holding brake on MKD112C-024-GP3-BN and how is it actuated?

The integrated brake provides positive load retention when de-energized that is ideal for Z-axes or indexers for preventing creep during power loss or E-stop. It is not intended for dynamic stopping duty.

How does RSF resolver–based relative feedback in the MKD112C-024-GP3-BN influence servo-loop stability and commutation at high switching frequencies?

The resolver’s sinusoidal excitation/return enables precise electrical angle for field-oriented control to minimize commutation phase error and quantization noise. Its analog nature tolerates EMI and long cable runs better than many incremental schemes for aiding phase margin on fast current loops.

Common Misspellings

Internal Product Review

The MKD112C-024-GP3-BN servo motor from Bosch comes in a 112-frame and its body length is recognized as C. It uses surface cooling and offers side-B connection for electrical connectivity. It has 130 mm pilot and depends on resolver (RSF) feedback for controlled motion. This motor has built-in 70-Nm holding brake and keyed shaft. It delivers 38-Nm stall torque and its torque constant measures 2.41-Nm/A.