AKM2G-64N-ASSNAA02 Kollmorgen
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The Kollmorgen AKM2G-64N-ASSNAA02 is part of the AKM2G Magnetic Motors series and delivers a continuous stall torque of 26.8 N-m with a peak stall torque of 70.3 N-m. This motor features a back EMF constant of 102 Vrms per kRPM and has a continuous stall current of 17.8 Arms. The shaft diameter measures 32 mm and it has a rotor inertia of 0.00169 kg-m².
Internal Product Review
The AKM2G-64N-ASSNAA02 from Kollmorgen is a high-performance magnetic motor featuring a continuous stall torque of 26.8 N-m and a continuous stall current of 17.8 Arms. Its torque constant of 1.51 N-m/Arms and low rotor inertia ensure precise response in demanding motion control applications. This motor stands out for its combination of high torque and efficient electrical characteristics.
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Product Description:
Kollmorgen manufactures the AKM2G-64N-ASSNAA02, a servo motor in the AKM2G Magnetic Motors series. This unit has a frame size of 142 mm and is built for closed-loop speed and position tasks on pick-and-place axes and machinery that relies on precise torque delivery. Its IEC flange has accuracy class N for alignment with standard gearboxes, and the rated ambient operating temperature ranges from 5 °C to 40 °C. In an automation cell, the motor couples directly to a drive that modulates phase current, converting electrical power into rotational motion while the encoder supplies feedback to the controller.
The motor delivers a continuous shaft output of 26.8 N-m while drawing 17.8 Arms at stall, a pairing that indicates the thermal limit under steady load. Copper losses are governed by a line-to-line resistance of 0.39 ohms, and the phase inductance of 6.8 mH shapes the current rise time for finely tuned torque loops. For short transients such as acceleration or impact loads, the rotor can withstand 70.3 N-m of peak stall torque without demagnetization or loss of synchronism. A 10-pole rotor with length code 4 gives the magnetic stack the depth needed for constant torque. The 32 mm shaft transmits power to couplings without requiring additional sleeves.
The motor has a back electromotive force constant of 102 Vrms/kRPM, translating mechanical speed into predictable voltage for the drive’s regenerative circuitry. Its electromagnetic design produces 1.51 N-m/Arms of torque per ampere, allowing high torque density from a compact package. Sealed connectors with an IP65 rating prevent dust and water jets from affecting signal integrity, supporting operation in washdown or humid environments with up to 95% relative humidity. The rotor inertia of 0.00169 kg-m² supports rapid acceleration, while a special connector and matching special shaft geometry simplify integration with custom harnesses and couplings. PT-1000 and PTC sensors monitor the motor temperature. The motor is supplied without a brake, so an external holding method is required when a stationary load cannot be supported by drive torque.
