Product Description:

The AKMH51E-ACKNCA1K is a hygienic stainless-steel washdown motor produced by Kollmorgen within the AKMH Stainless Servomotors series. Designed for flange mounting in IEC machines, this motor drives packaging, filling, and conveyor equipment that must be sanitized with high-pressure cleaning. Its 148 mm flange, 110 mm pilot, and closed-keyway shaft allow direct coupling to gearboxes or load wheels, while the shaft seal keeps pressurized water away from the internal bearings. The smooth exterior and sealed construction suit areas where food residue, rinse water, and aggressive cleaning agents are common. This layout also works well on open machine frames that are cleaned in place rather than protected inside a cabinet.

At a 640 V DC bus, the rotor reaches a rated speed of 3000 rpm and delivers a continuous stall torque of 3.92 Nm when the winding temperature is at 100 °C. The type E winding produces that torque with a sensitivity of 1.53 Nm/Arms, which helps the drive convert current demand into predictable force output. Back electromotive force rises with speed at 110.4 Vrms/krpm, giving the matched drive another useful value for motion regulation. Line-to-line resistance is 9.0 Ω, which affects copper losses and motor heating during steady operation. These electrical values help the servo drive regulate current, speed, and thermal loading during continuous use without relying on unnecessary margin.

Thermal operation is supported by a continuous current of 2.61 Arms at 100 °C, and the housing uses 1.4404 (316L) stainless steel to resist caustic cleaners in wet processing areas. Rotor inertia is 3.42 kg·cm², which helps balance quick acceleration with stable load response during frequent starts and stops. The overall assembly meets IP69K, so washdown jets do not compromise the FDA-approved O-ring flange seal or the mineral-filled PTFE cable gland. An 11-bit Smart Feedback Device reports rotor position with a stated accuracy of ±8 arc-minutes, giving the drive immediate position data during startup. That feedback supports stable commutation and smooth low-speed control in applications that require frequent cleaning and repeatable motion.