Product Description:

The AKMH51L-ACKNCA1K is a hygienic stainless steel washdown motor manufactured by Kollmorgen within the AKMH Stainless Servomotors series. Intended for direct placement in sanitary production zones, this servo unit converts DC power from an AKD drive into precise rotary motion for conveyors, augers, or dosing pumps. Its stainless construction and sealed design allow continuous operation during aggressive cleaning, eliminating the need for secondary mechanical covers.

The motor housing is machined from 1.4404 (316L) stainless steel and finished to a surface roughness below 0.8 µm so wash chemicals rinse away without residue. An FDA-approved O-ring seals the 148 mm flange, while a 110 mm pilot centers the IEC flange mounting in the IM B5 style. A closed keyway runs through the 24 mm shaft and is guarded by a shaft seal, while the overall enclosure has an IP69K rating that permits high-pressure disinfection at every angle. A pre-assembled cable connects directly to an AKD amplifier, and the Smart Feedback Device encoder provides 11-bit position data. Winding resistance is 0.58 Ω, and the coil delivers a torque constant of 0.37 Nm/A, yielding 3.54 Nm rated torque at 3000 rpm. During transients, the current can rise to 35.7 A and the shaft can produce up to 10.3 Nm peak torque without a holding brake.

The mechanical section is identified as frame AKMH5, and the shortest rotor length classification of 1 keeps inertia to 3.42 kgcm², enabling rapid acceleration on indexing axes. Standstill torque reaches 3.89 Nm, supporting vertical loads despite the absence of a brake. Controller scaling is simplified by the back-EMF constant of 26.6 mV/min, and the single-meter pigtail exits through a gland molded from mineral-filled PTFE that resists caustic detergents. Compliance with DIN 748 shaft and DIN 6885 T1 key dimensions allows straightforward coupling to standardized gearheads. The washdown-ready design suits equipment that is cleaned frequently while still requiring accurate servo control.