Product Description:

The AKMH44K-ACKNCA1K is a hygienic stainless-steel washdown motor manufactured by Kollmorgen within the AKMH Stainless Servomotors series. Its 1.4404 (316L) housing, an FDA-approved O-ring at the 114 mm flange, and surface roughness below 0.8 µm let the unit tolerate high-pressure sanitation in food or pharmaceutical machinery. IEC flange mounting in IM B5 style simplifies integration with gearheads or pumps, and the closed-keyway shaft has a 19 mm journal diameter. The motor omits a holding brake to minimize crevices and instead relies on servo torque for position holding.

For continuous operation, the rotor can deliver 5.42 N·m while drawing 9.41 Arms, and peak overloads up to 20.24 N·m are accepted for rapid indexing. A phase-to-phase resistance of 0.7 Ω and an inductance of 2.79 mH set the electrical time constants, and a torque constant of 0.586 N·m/Arms matches Kollmorgen AKD drives through the pre-assembled 1-meter cable. The SFD3 encoder supplies 11-bit position data plus motor ID, and the rotor inertia of 0.000273 kg·m² works with the AKMH4 frame to moderate acceleration ramps. Additional mechanical data include a motor length of 253.7 mm, an 80 mm pilot diameter, and compliance with DIN 748 and DIN 6885 T1 keyseat geometry.

An IP69K housing, a matching shaft seal, and a mineral-filled PTFE cable jacket withstand 100 bar spray at 80 °C without water entry, while the back-EMF constant of 37.8 Vrms/kRPM lets the drive estimate speed during transient events. Thermal equilibrium is represented by a 74 min time constant, allowing ample soak before derating in ambient washdown conditions. The feedback system’s 11-bit resolution supports smooth velocity loops, and the rotor length code 4 balances torque density against mass. Frame hardware follows the Standard Style designation so all fasteners remain outside the product zone.