Product Description:

The AKMH31C-CNKNGF7K is a synchronous servo motor produced by Kollmorgen within the AKM Synchronous Servo Motors series. Designed for tightly controlled industrial axes, the unit converts drive current into rotational motion for compact automation tasks that require accurate speed and position control. It works with a HIPERFACE DSL EKM36 multi-turn encoder, which allows the drive to receive absolute feedback through an integrated communication path. A rotor length index of 3 balances torque production against envelope size, yielding an overall housing length of 182.5 mm. Mechanical interfacing is handled by a 60 mm pilot diameter and a 14 mm keyed shaft, so the motor seats accurately while transferring torque through standard couplings.

During continuous operation, the motor sustains 0.91 Nm of stall torque while drawing 1.24 Arms. These values indicate the steady load the stator can hold during ongoing use without exceeding its thermal limit. For rapid positioning, the drive can reach a peak torque of 3.76 Nm and a peak current of 5.48 Arms, which supports short acceleration periods and quick direction changes. Motion commands are executed safely up to a mechanical speed of 8000 rpm, making the motor suitable for fast indexing and other high-response axis movements. The encoder also provides fine position feedback, which helps the controller maintain stable low-speed regulation and accurate stopping behavior.

Electrical characteristics complement the mechanical profile. The back-EMF constant is 54.5 Vrms/krpm, enabling predictable voltage generation that matches servo drives rated for a maximum DC bus of 640 Vdc. With a torque constant of 0.76 Nm/Arms, current commands translate linearly into output torque, while a rotor inertia of 0.33 kg-cm² keeps acceleration responsive without making the axis difficult to tune. This combination supports smooth response when load demand changes quickly during motion. The motor is well suited for installations where compact size, absolute feedback, and repeatable servo performance are required.