R911282789 (MKD112D-027-KP3-BN)

MKD Synchronous Motors

Rated 4.2 stars (13 total reviews)

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The R911282789 (MKD112D-027-KP3-BN) is a synchronous 3-phase servo motor from the MKD series by Bosch Rexroth. Designed with a shaft with keyway and shaft seal, it features a holding brake rated at 70 Nm. The encoder unit utilizes resolver feedback with integrated encoder, offering absolute position detection over more than 4096 revolutions. The motor provides 48.0 Nm continuous torque at standstill and has a motor length of D, centering diameter of 130 mm, and motor size 112. The winding code is 027 and the voltage constant is 118 V/1000 RPM, with a torque constant of 0.89 Nm/A. It weighs 37 kg and is cooled via a surface cooling method. Connection is through output connector.

Technical Specifications

Product Type
Industrial automation technology motor

Peak Torque Usage
Optimal

Motor Speed
Extensive range

Start-Stop Motor Attribute
Responsive

Peak Torque Regulation
Drive controller regulated

Max Speed Regulation
DC link voltage regulated

Holding Brake
Drive controller regulated

Installation Directions
All possible directions

Encoder System Function
Controls motor speed and position accuracy

Weight
Lightweight

Protection Mechanism
IP65 against external contacts and intrusions

Housing Overtemperature
60K

Winding Overtemperature
100K

Connectors
Plug-in electric

Cooling System
Internal, natural convection, optional blower unit

Output Shafts and Directions
Multiple

Frequently Asked Questions

What are the implications of the 0.89 Nm/A torque constant on drive sizing for MKD112D-027-KP3-BN?

Its lower current per newton-meter reduces copper losses for a given torque demand for stabilizing thermal rise under continuous duty. It also relaxes inverter RMS current requirements to allow better utilization of the drive’s current headroom during transients.

Why is the 70 Nm holding brake valuable for vertical/Z axes on MKD112D-027-KP3-BN, and how is it controlled?

The spring-applied, electrically released brake provides gravity load retention during emergency stop and power loss. It expose a brake control output and interlocks that sequence release after field-oriented current is established.

How does a radial cooling path alter the continuous torque envelope versus natural-convection MKD112 variants?

Its radial airflow lowers thermal resistance from stator to ambient, cutting hot-spot temperature and extending the M-n continuous curve. It sustains higher duty at identical current to delay thermal limiting events.

With IP65 housing and a shaft seal, what ingress scenarios still require precautions for MKD112D-027-KP3-BN in food/packaging cells?

Its IP65 housing resists dust and directed jets but not immersion or high-pressure washdowns, its caustic agents can attack seals. It guarded spray zones and chemical-compatible shaft seals to maintain enclosure integrity.

Which drive platforms are typically paired with MKD112D-027-KP3-BN in brownfield and greenfield deployments?

The legacy lines use DIAX04 (HDD/HDS) over analog/SERCOS, its modern upgrades commonly adopt IndraDrive topologies while retaining MKD mechanics via feedback memory. This eases commissioning and parameterization across controllers.

Common Misspellings

Internal Product Review

The MKD series synchronous motor MKD112D-027-KP3-BN from Bosch is built with resolver feedback for position detection. Its construction provides maximum protection against external pollutants due to its IP65 sealing. This motor uses radial cooling and it comes with a 70 Nm brake support. Its torque value is 48 Nm at standstill and its torque constant stands at 0.89 Nm/A. It possesses 130 mm pilot to suit installation in packaging, gantry and material-handling lines.

1620 Old Apex Road
Cary, NC 27513, USA

Toll Free: 1-888-551-3082
International: 1-919-443-0207

Fax: 1-919-867-6204

[email protected]

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North Carolina Office

Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

Phone

Toll Free: 1-888-551-3082
International: 1-919-443-0207

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