Product Description:

The AKMH41H-ACKNCA1K servomotor is built by Kollmorgen for the AKMH Stainless Servomotors series. Designed as a hygienic stainless steel washdown motor, it provides closed-loop rotary motion on conveyors, dosing pumps, and pick-and-place axes exposed to high-pressure sanitation. The AKMH4 frame uses a 1.4404 (316L) stainless housing that resists caustic cleaning agents, and its flange mounting follows IEC dimensions in the IM B5 style to simplify direct coupling to gearheads or machine walls.

Electrically, the motor delivers a continuous shaft output of 1.83 N-m while drawing 5.34 Arms. Under transient loads, it can reach 6.23 N-m with a peak current of 22.4 Arms. A torque constant of 0.353 N-m/Arms relates commanded current to developed torque, and the 1.58 ohm phase resistance together with 5 mH inductance help set the drive’s current loop response. Ten magnetic poles and a rotor inertia of 0.000081 kg·m² support fast indexing without overshoot, while a thermal resistance of 1.05 °C/W helps keep winding temperature predictable. Position feedback comes from a Smart Feedback Device (SFD3) encoder at 11-bit resolution, and a pre-assembled 1 m cable matched to AKD drives simplifies installation. The design omits a holding brake to minimize mass, and the rotor length is the shortest option.

The housing, shaft, and cable carry an IP69K protection rating, and the surface finish is less than 0.8 µm Ra to reduce places where residue can collect. Heat soak is modeled by a thermal time constant of 40 minutes, while the electromagnetic back EMF is rated at 23.7 Vrms/kRPM to assist drive matching. Mechanical interfaces include a flange and motor body that both measure 114 mm in diameter, a pilot diameter of 80 mm, and a 19 mm by 40 mm closed-keyway shaft with a shaft seal that carries the same protection rating. An FDA-approved O-ring sits in the flange groove, the cable jacket is mineral-filled PTFE, and the dimensions follow DIN 748 and DIN 6885 T1 standards.