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R911286345 (MKD112D-027-GP3-AN)

MKD Synchronous Motors

Rated 4.8 stars (11 total reviews)
  In-Stock, Ships 3-5 Days
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1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping

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6 Minutes 21 Seconds

The R911286345 (MKD112D-027-GP3-AN) is a Rexroth MKD series digital AC servo motor engineered for precise automation tasks. It features a size 112 frame with a D-length, continuous standstill torque of 48.0 Nm, and a holding brake with 70 Nm torque. The shaft incorporates a keyway as per DIN 6885-1 and a shaft sealing ring to enhance mechanical integrity. Winding code 027 and resolver (RSF) feedback provide relative position detection. The motor employs a brushless, fully enclosed design with permanent magnet and electronic commutation, supporting a maximum speed of 3000 min⁻¹, peak current of 142.2 A, and rotor inertia of 350×10⁻⁴ kg·m². Thermal time constant is 90 min, flange size is 192 mm, and weight is 56 kg.

View Datasheet

Technical Specifications

Size
112

Length
48.0Nm

Winding Code
27

Motor Feedback
Resolver motor feedback

Driven Shaft
Key per DIN 6885-1 with sealing ring

Holding Break
70Nm

Output Connector
Side A direction

Design
Unique, no other

Permanent Magnet
Yes, with electronic commutation

Cooling Mechanism
Standard or Radial

How does the 90 min thermal time constant of MKD112D-027-GP3-AN influence overload utilization and model-based thermal limits?

The long time constant slows temperature rise for enabling extended accel bursts before reaching thermal limits under intermittent duty. Its thermal observers in the drive can exploit this inertia to maximize throughput without exceeding winding class constraints.

At the rated 2000 min⁻¹, what mechanical output is feasible if 48.0 Nm were maintained on MKD112D-027-GP3-AN?

The power would be on the order of ≈10 kW (P≈τ·ω). Its actual continuous power depends on the torque-speed curve, its servo torque typically rolls off with speed due to voltage and current limits.

How do the 192 mm flange and 130 mm centering diameter affect mounting stiffness and alignment in gantry or gearbox-coupled assemblies?

The large pilot ensures concentricity and reduces shear on fasteners for improving torsional coupling alignment and modal behavior. Its correct H7/h7 fit tolerances limit runout to minimize excitation of structural resonances under rapid reversals.

What are the trade-offs of a shaft with keyway and shaft seal on MKD112D-027-GP3-AN versus shrink-fit or taper-lock alternatives?

The DIN 6885-1 key simplifies repeatable phasing and provides positive drive, while the seal mitigates lubricant and dust ingress. Its keyways introduce stress risers and potential backlash.

How does the rotor inertia (3.50×10⁻² kg·m²) in MKD112D-027-GP3-AN influence loop bandwidth and reflected inertia matching?

Its higher rotor inertia increases mechanical damping and eases standstill ripple filtering but limits achievable acceleration and crossover frequency. Its load inertia (reflected through gearing/screw lead) within common ratios (≈1:1–5:1) to maintain stable and responsive tuning.

MKD 112D-027-GP3-AN

MKD-112D-027-GP3-AN

MKD112D-O27-GP3-AN

MKD112D027GP3AN

MKD112D 027 GP3 AN

mkd112d-027-gp3-an

Internal Product Review

The MKD112D-027-GP3-AN servo motor comes with a 70 Nm holding brake. It has a 192 mm flange and offers resolver-based relative feedback. This motor features a rated rotational speed of 2000 min⁻¹ and weighs 56 kg. It serves in machine tools, printing/packaging axes and food-processing conveyors that requires secure vertical/horizontal positioning. It possesses a balanced keyway shaft with an embedded seal.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MKD112D-027-GP3-AN.
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