Product Description:

The AKMH41C-ACKNCA3K is a stainless-steel servo motor produced by Kollmorgen as part of the AKM Synchronous Servo Motors series. In automated filling lines, cutters, and indexing stations, it converts regulated drive current into controlled shaft torque. This allows repeatable positioning and stable velocity profiles even when the equipment is cleaned with high-pressure fluid.

The motor develops a continuous stall torque of 1.95 Nm while drawing only 1.46 Arms. When acceleration is required, it can accept 5.84 Arms to produce a peak stall torque of 6.12 Nm. Magnetic design efficiency is reflected in the torque constant of 1.34 Nm/Arms and the back-EMF factor of 86.3 Vrms/kRPM, which simplifies current loop tuning. The stator windings present an inductance of 66.1 mH and a DC resistance of 21.3 Ω, and these values affect drive PWM frequency and voltage drop requirements. Ten poles synchronize with field excitation to deliver low cogging, while the rotor length index of 4 gives the 84 mm diameter frame extra active stack. A 19 mm shaft transmits motion, and static friction of 0.014 Nm together with viscous damping of 0.009 Nm/kRPM helps the servo drive hold position without hunting. Two SpeedTec Ready connectors provide separate power and feedback terminations.

The actuator’s dynamic profile is influenced by a rotor inertia of 0.000081 kg m², letting the connected drive issue rapid reversals without overshoot on moderate-load axes. Heat generated by continuous cycling dissipates through a thermal path rated at 0.97 °C/W; this characteristic, together with a thermal time constant of 13 min, affects the permissible duty cycle before temperatures approach insulation limits. Because the lamination stack is held within an 84 mm enclosure, this thermal lag allows short bursts at peak current without requiring external cooling and helps keep the overall machine footprint compact.