MKD112D-027-KG3-BN

MKD Synchronous Motors

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The MKD112D-027-KG3-BN servo motor from Bosch Rexroth Indramat is part of the MKD Synchronous Motors series. It features a plain shaft with side B connection, resolver feedback with integrated encoder, and a holding brake providing 70 Nm of torque. It delivers continuous standstill torque of 48.0 Nm and operates continuously at ambient temperatures from 0 to 40°C. It weighs 73 kg and offers absolute position detection over 4096 revolutions.

Technical Specifications

Shaft Design
Plain shaft

Shaft Seal
Yes

Holding Brake
With holding brake

Holding Brake Torque
70 Nm

Other Designs
None

Encoder Type
Resolver feedback w/ integrated encoder

Position Detection
Absolute (>4096 revs)

Continuous Torque at Standstill
48.0 Nm

Motor Length
D

Centering diameter
130 mm

Flange size
192 mm

Connection Direction
Side B

Product type
Servo Motor

Winding Code
027

Operation
Continuous (S1)

Ambient Temperature Range
0 to 40°C

Type
Permanent Magnet Synchronous Motor

Protection Class
IP65

Weight
73 kg

Frequently Asked Questions

What is the engineering rationale for a 70 Nm holding brake relative to the 48 Nm continuous torque at standstill on MKD112D-027-KG3-BN for vertical axes?

The brake torque margin addresses static load, reflected inertia and safety factors so axes remain stationary under gravity and process disturbances. It improves emergency-stop holding capability and reduces drift when power is removed or the drive is disabled.

How do IP65 protection and a shaft seal with side-B connection benefit installations in packaging, printing, or food-adjacent environments?

The IP65 rating and a sealing ring limits dust and water ingress that protects bearings and feedback interfaces during washdown-adjacent or particulate-rich duty. Its side-B routing simplifies cable runs and helps maintain EMC, strain relief and service loops in tight machine frames.

How do the 130 mm centering diameter and 192 mm flange on MKD112D-027-KG3-BN influence coupling selection and permissible side loads?

The pilot (centering) bore locates the motor concentrically. It keeps belt/pulley radial forces within Rexroth recommendations for the MKD112 size class.

For printing and paper-processing, how does “absolute over 4096 revs” improve registration and uptime versus incremental-only encoders?

The multiturn absolute feedback allows immediate position availability after interruptions to limiting rethreading and print-mark alignment cycles. This speeds restart, reduces scrap and stabilizes synchronous sections in web handling.

What inertia-matching concerns exist given MKD112D-027-KG3-BN’s rotor inertia (~0.0138 kg·m²) and 73 kg mass for machine tools or gantries?

Its load-to-motor inertia ratio that preserves servo bandwidth while limiting resonance, it adds compliant couplings or notch filters as needed. Its base-frame stiffness and lifting/installation provisions for the motor’s mass.

Common Misspellings

Internal Product Review

The Rexroth Indramat’s MKD112D-027-KG3-BN motor comes with a plain-shaft design and connects to electrical main supply through its side-B connector. It has an integrated resolver feedback system with multiturn absolute detection of more than 4096 revolutions. Its 70-Nm brake and 48-Nm standstill torque makes it suitable for factory automation systems. This motor is constructed with IP65 rating and it tolerates temperature between 0 – 40 °C.