Product Description:

The AKMH31C-ACKNCA1K is a hygienic stainless steel washdown servomotor engineered by Kollmorgen for the AKMH Stainless Servomotors series. This motor connects directly to AKD servo drives through its pre-assembled cable and delivers precise rotary motion for food, beverage, and pharmaceutical equipment that undergoes daily high-pressure cleaning. A mineral-filled PTFE outer layer over the stainless housing helps prevent bacterial harboring while the design supplies continuous torque to conveyors, actuators, and dosing pumps in regulated environments.

Mechanically, the motor uses an IP69K-rated housing fabricated from 1.4404 (316L) stainless steel. The exterior is ground to a surface roughness below 0.8 µm so fluids can shed quickly during washdown. A flange diameter of 89 mm with an IEC-compatible B5 pattern secures the AKMH3 frame to machinery through the 60 mm pilot and an FDA-approved O-ring seal. The closed-keyway shaft follows DIN 748 / DIN 6885 T1 and is 14 mm in diameter and 30 mm long, protected by an IP69K shaft seal. Additional dimensions include an 85 mm body diameter and a 1 m overall length, while the motor uses flange mounting, has the shortest rotor length code of 1, weighs 4.1 kg, and is supplied without a holding brake.

Electrically, the C winding produces a back EMF of 54.5 Vrms/kRPM and a torque constant of 0.76 Nm/Arms. With 21.4 Ω resistance and 37.5 mH inductance, the motor sustains a continuous stall torque of 0.91 Nm at 1.24 Arms. It tolerates 5.48 Arms for a peak stall torque of 3.76 Nm, aided by a rotor inertia of 0.000033 kg·m². Thermal resistance is 1.41 °C/W, and the winding has a thermal time constant of 24 min, permitting frequent sanitation cycles without overheating. Position feedback is delivered by an SFD3 encoder with 11-bit resolution, and all signals are routed through the sealed cable to the AKD drive.