Product Description:

The AKMH65M-ACKNCA1K is a hygienic stainless steel washdown motor produced by Kollmorgen within the AKMH Stainless Servomotors series. Built from 1.4404 (316L) stainless steel and fully sealed for washdown service, it drives rotary axes that must endure direct high-pressure cleaning in food, beverage, and pharmaceutical automation. The unit bolts to IEC machinery through a flange interface, and its Smart Feedback Device supplies absolute position and speed data to AKD servo drives for closed-loop control.

At the electrical level, the motor delivers a continuous stall torque of 21.1 N·m from a continuous stall current of 12.6 A, while peak stall current reaches 40.8 A during short accelerations. The winding set has 0.75 Ω DC resistance and 6.06 mH inductance, and with a back-EMF constant of 119.3 Vrms/kRPM and a bus limit of 640 VDC, it connects to the drive through a pre-assembled cable. A ten-pole design works with an 11-bit SFD3 encoder to support smooth torque production, while static friction is 0.246 N·m and the axial and radial bearings carry 2200 N and 1250 N. Because the motor is supplied without a brake, stopping torque must be provided electrically. Thermal resistance is 0.39 °C/W. The motor uses a 186 mm IEC flange with an FDA-approved O-ring, a 130 mm pilot, and IM B5 mounting per DIN 748 and DIN 6885 T1. The IP69K enclosure is built to withstand washdown, and a 32 mm closed-keyway shaft is protected by an IP69K seal. Frame size AKMH6 and rotor length 5 indicate the motor's mechanical envelope.

During operation, the enclosure maintains a surface finish below 0.8 µm, which helps discourage contaminant adhesion during wash cycles. Mineral-filled PTFE sealing elements reinforce the FDA-approved O-ring against caustic foams or steam. A motor mass of 30.2 kg and a rotor inertia of 0.004 kg·m² affect acceleration capability for medium-inertia loads. Thermal soak is moderated by a time constant of 88 min, enabling continuous duty in temperature-controlled rooms.