Product Description:

The AKMH23F-ACKNCA1K is a hygienic stainless-steel washdown motor manufactured by Kollmorgen within the AKMH Stainless Servomotors series. Built from 1.4404 (316L) stainless steel and sealed with an FDA-approved O-ring at the flange, the unit is designed for direct placement in sanitary zones where frequent high-pressure cleaning is required. Using a Smart Feedback Device (SFD3) encoder and a pre-assembled cable for AKD drives, it provides closed-loop velocity and position control for conveyors, augers, and mixers that must meet strict cleanliness requirements in industrial automation. The stainless exterior helps the motor fit equipment that is washed several times a day without the need for a separate protective cover.

The motor’s protection rating of IP69K withstands 100 bar washdown jets, eliminating the need for protective enclosures. A flange diameter of 79 mm provides the mating interface for IEC flange mounting, while the shaft’s closed keyway follows DIN 6885 T1 for slip-free torque transfer. Its peak torque reaches 4.46 Nm, produced when the windings accept a peak current of 17.2 A; these values help match the motor to rapid acceleration duty cycles. The electromagnetic design delivers a torque constant of 0.26 Nm/A, so drive controllers can predict output torque from measured phase current and maintain precise tension or speed regulation under load.

The motor also has specific mechanical and thermal limits for washdown service. The rotor and bearings tolerate an axial thrust of 600 N, allowing the motor to support screw feeders or belt pulleys without supplemental thrust bearings. A thermal time constant of 34 min means winding temperature rises slowly, enabling intermittent overloads before steady-state heat equilibrium is reached. With an encoder resolution of 11 bit, each revolution is divided into 2048 digital counts, supporting fine speed trimming in servo loops. The polished housing maintains a surface roughness of < 0.8 µm, reducing microbial adhesion in regulated processing environments. This finish also helps product residue rinse away more easily during routine sanitation cycles.