R911276212 (MKD112D-024-GG0-AN)

MKD Synchronous Motors

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The Bosch Rexroth R911276212 (MKD112D-024-GG0-AN) is an AC synchronous servo motor featuring four pole pairs, a plain shaft with shaft seal, and resolver feedback for relative position detection. It has a winding inductance of 5.65 mH, continuous torque of 48 Nm at 60K and 57 Nm at 100K during natural convective cooling, a maximum current of 142.2 A, and winding resistance of 0.35 Ohms at 20°C. The motor operates at a rated speed of 2,000 rpm and a characteristic speed of 3,000 rpm, offers a maximum torque of 187 Nm, and possesses a rotor inertia of 0.0350 kgm². It weighs 43.8 kg, conforms to IP 65 and insulation class F per DIN VDE 0530 – part 1, has a centering diameter of 130 mm, and supports installation up to 1,000 meters altitude. The thermal time constant is 90 minutes for both 60K and 100K overtemperature conditions. Electrical connection is on side A and rated voltage is 480 V.

Technical Specifications

Weight
45 kg

Characteristic Speed
3000 revs/min

Pole Pairs
4

Winding Inductance
5.65 mH

Rated Speed
2000 revs/min

Peak Current
142.2 Amps

Continuous Torque (60K operation)
48 Nm

Continuous Torque (100K operation)
57 Nm

Winding Resistance
0.35 Ohms

Maximum Torque
187 Nm

Rotor Inertia
0.0350 kgm2

Max Speed
3000 revs/min

Storage Temp Range
-20 oC to +80 oC

Working Temp Range
0 – 40 oC

Protection Category
IP 65

Thermal Time Constant (60K)
90 mins

Thermal Time Constant (100K)
90 mins

Max Installation Height
1000 meters

Insulation Class
F

Frequently Asked Questions

How does the RSF resolver on MKD112D-024-GG0-AN influence commutation accuracy and closed-loop behavior?

The resolver provides continuous electrical-angle information for sinusoidal commutation and relative position feedback for enabling stable control across the speed range. It matches the “G” feedback option defined for MKD series motors.

Why is a plain shaft with sealing ring advantageous on the MKD112D-024-GG0-AN in dusty or splash-exposed environments?

The sealed plain shaft reduces ingress at the shaft interface and simplifies coupling choices. It is coupled with IP65 housing integrity, it maintains environmental protection when mounted correctly and cabled per manufacturer guidance.

What cabling and connector sizing considerations follow from the MKD112D-024-GG0-AN rated current of 29.4 A at 480 V class?

Its power leads, connector contacts and protective devices should be thermally rated for the RMS current with margin for ambient temperature and bundling and impedance kept low to limit voltage drop. It specified ratings are 29.4 A and 480 V.

How do the 192 mm flange and 130 mm centering diameter simplify retrofit alignment on legacy B5 mounts?

These are standardized MKD112 interface dimensions for aiding concentricity and run-out per applicable DIN references. Its frame-size table lists 112-frame motors with exactly those mounting diameters.

How does the 480 V class impact DC-link sizing and dynamic braking strategy with IndraDrive controllers?

Its 480 V AC supply yields a ~680 V DC-link nominal, it requires sufficient capacitance or a chopper/resistor sized for worst-case kinetic energy. Its thermal duty of the brake resistor for repetitive decelerations and mains dips.

Common Misspellings

Internal Product Review

The Bosch Rexroth Indramat’s MKD112D-024-GG0-AN AC servo motor is rated to deliver 48.0 Nm of stationary torque and it operates from a 480 V AC source, while utilizes 29.4 A of rates torque. It has built-in resolver (RSF) feedback that enables precise closed-loop positioning. This unit has a plain-shaft with an imposed seal and it is housed in an IP65 protective housing. It uses fanless cooling for simplified integration into robotics, packaging and printing lines.

1620 Old Apex Road
Cary, NC 27513, USA

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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

Indramat USA sells factory new and pre-owned surplus products and maintains channels to procure supply. Indramat USA is not affiliated with nor an authorized distributor or representative of any manufacturers, brands or products listed. Designated trademarks, brand names, and brands appearing herein are the property of their respective owners.