Product Description:

The AKM42E-ANAB-03 is a synchronous servo motor built by Kollmorgen and supplied within the AKM Synchronous Servo Motors series. By combining permanent-magnet technology with high-resolution feedback, the unit delivers closed-loop position and velocity control for pick-and-place axes, indexing tables, and other automated machinery that must accelerate quickly and settle precisely. Its feedback system lets the paired drive correct position and speed errors during motion, which helps maintain repeatable axis behavior under changing loads.

Under 400 VAC operation, the motor reaches a nominal output of 2.81 N·m while spinning at 3500 RPM. A continuous shaft load can be held with 3.42 N·m and maintained when the winding draws only 2.74 Arms; this low current helps drive amplifiers stay within thermal limits. The electromagnetic design translates every ampere into torque at a ratio of 1.25 N·m/Arms, and a back electromotive force value of 80.9 Vrms/kRPM indicates the voltage the drive must counter during regeneration. Ten poles help minimize cogging, and the 7.78 Ω DC resistance helps control copper loss during constant duty cycles. Winding designation E and rotor length index 2 identify the coil density and stack height used for mid-range inertia applications, and the 84 mm square frame supports mounting with IEC gearheads.

For rapid moves, the motor tolerates 11.3 N·m of peak torque and 11 Arms of peak current for short bursts. Position data comes from a BiSS Acuro multi-turn encoder that measures 2048 lines/rev and tracks 4096 mechanical turns, giving the controller absolute position without homing. The magnetic circuit’s 26.8 mH of inductance helps smooth current ripple, while a rotor inertia of 0.000145 kg·m² lets the axis change speed with minimal overshoot. An IEC flange with accuracy N helps maintain concentric alignment, and the smooth shaft eases coupling to precision backlash-free clamps. This combination of low inertia and absolute feedback supports axes that must reverse quickly and return to commanded position without long settling times.