AKMH52H-ACKNCA1K Kollmorgen
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The AKMH52H-ACKNCA1K is a hygienic stainless steel washdown motor produced by Kollmorgen as part of the AKMH Stainless Servomotors series. It features a continuous stall torque of 6.72 N-m, a torque constant of 1.32 N-m/Arms, and uses a Smart Feedback Device for encoder feedback. This motor is built with a 1.4404 (316L) stainless steel housing, an IP69K protection class, and a flange diameter of 148 mm.
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Product Description:
The AKMH52H-ACKNCA1K is a stainless steel servomotor built by Kollmorgen for the AKMH Stainless Servomotors series. Classified within frame size AKMH5, it is designed as a hygienic washdown unit and uses a 1.4404 (316L) housing with an FDA-approved O-ring behind the 148 mm IEC flange to block liquid ingress. The motor follows DIN 748 and DIN 6885 T1 interface rules, uses a 24 mm closed-keyway shaft, and keeps external surfaces below 0.8 µm surface roughness so it can withstand aggressive cleaning in food or pharmaceutical lines.
Electrically, the motor delivers a continuous stall torque of 6.72 N-m while drawing a continuous stall current of 5.17 Arms. These values describe the sustained mechanical output and the current the drive must supply under locked-rotor thermal limits. With a torque constant of 1.32 N-m/Arms, each ampere of phase current produces predictable shaft torque, and a back-EMF constant of 92.7 Vrms/kRPM indicates the voltage generated as the rotor turns. A phase-to-phase DC resistance of 2.37 Ω influences resistive heating and the servo’s I²R power loss. Feedback is provided by an 11-bit Smart Feedback Device (SFD3), and the 110 mm pilot centers the unit on the mounting face to maintain alignment with the driven load.
Dynamic events are handled by a peak stall torque of 20.45 N-m, giving the axis nearly three times its continuous capacity for rapid indexing or for overcoming static loads. The phase inductance of 11.9 mH sets the electrical time constant that the AKD drive must manage during current transients, and the rotor has 10 poles for high-resolution commutation without excessive speed. Washdown integrity is certified to IP69K, and the motor also uses an IP69K shaft seal with a mineral-filled PTFE cable jacket supplied preassembled for AKD drives. Mechanical responsiveness is aided by a rotor inertia of 0.000622 kg-m², and the unit uses rotor length code 2. The motor mounts in the IM B5 style through a flange interface and comes without a brake to simplify sanitation routines.
