MKD112D-027-GP3-AN

MKD Synchronous Motors

Rated 4.8 stars (11 total reviews)

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The Bosch Rexroth Indramat MKD112D-027-GP3-AN is a precise servo motor in the MKD Synchronous Motors series. It features 48.0 Nm continuous torque at standstill, a 70 Nm holding brake, resolver feedback position detection, 2000 min-1 rated speed, a 192 mm flange, and weighs 56 kg.

Technical Specifications

Shaft Design
Shaft with keyway

Shaft Seal
Yes

Holding Brake
With holding brake

Holding Brake Torque
70 Nm

Other Designs
None

Encoder Type
Resolver feedback (RSF)

Position Detection
Relative

Continuous Torque at Standstill
48.0 Nm

Motor Length
D

Centering diameter
130 mm

Flange size
192 mm

Connection Type
Output connector

Product type
Servo Motor

Winding Code
027

Thermal Time constant
90 min

Rated speed
2000 min-1

Weight
56Kg

Peak Current
142.2A

Rotor Inertia
350×10-4kgm2

Frequently Asked Questions

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.

Common Misspellings

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.