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R911283984 (MKD112D-027-GG3-BN)

MKD Synchronous Motors

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The Bosch Rexroth MPN R911283984 (MKD112D-027-GG3-BN) is a synchronous servo motor designed for industrial automation, featuring natural or surface cooling with a radial cooling system. It operates at a characteristic speed of 3000 min⁻¹ and has a peak current of 142.2 A. The motor provides continuous torque at standstill of 48.0 Nm, with a continuous current range from 31.6 A to 47.4 A, and yields a maximum theoretical torque of 187 Nm. Electrical properties include a voltage constant of 154.5 V/1000 min⁻¹, winding resistance of 0.35 Ω, inductivity of 5.65 mH, and 4 pole pairs. The shaft is plain with sealing, and the holding brake produces 70 Nm of torque. A resolver (RSF) is used for encoder feedback, with relative position detection. The motor is equipped with a multiturn absolute encoder, has a centering diameter of 130 mm, motor length D, and size 112. It is suitable for mounting at 1000 m above sea level, and intended operating and storage temperatures are 0–40°C and -20–80°C, respectively. The rotor moment of inertia is 350×10⁻⁴ kg·m², weight is approximately 56 kg, and lifetime-lubricated bearings are used.

Technical Specifications

Cooling Methods
Natural, Surface

Peak Current
142.2 amps

Characteristic Motor Speed
3000min-1

Continuous Torque at Standstill (60K overtemperature, natural cooling)
48.0 Nm

Continuous Torque at Standstill (100K overtemperature, natural cooling)
57.0 Nm

Continuous Torque at Standstill (surface cooling)
72.0 Nm

Continuous Current (60K overtemperature, natural cooling)
31.6 amps

Continuous Current (100K overtemperature, natural cooling)
40.2 amps

Continuous Current (surface cooling)
47.4 amps

Voltage Constant
154.5 V/1000Min-1

Winding Resistance
0.35 Ohms

Torque Constant
1.7Nm/A

Pole Pairs
4

Motor Winding Inductivity
5.65 Mh

Rotor Moment of Inertia
350X10-4

Weight
56kgs

Maximum Speed
3000min-1

Theoretical Maximum Torque
187 Nm

Storage/Transport Temperature
-20°C to +80°C

Ambient Temperature
0°C to 40°C

Peak Mounting Height
1000 MSL

Time Constant (natural cooling)
90 minutes

Time Constant (surface cooling)
40 minutes

Common Misspellings

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Warranty
1-year-warranty
Indramat USA 1 Year Warranty
Repair
We offer a repair service for the MKD112D-027-GG3-BN.
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