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AC synchronous motors are high pole count motors that naturally turn at slower speeds (72 or 60 rpm). They only need a resistor – capacitor (RC) network to operate from singlephase AC utility power. For loads that operate at 72 rpm or slower, they are very cost effective and simple to use.

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KS and SS Series AC Synchronous Motors

These high-torque synchronous motors are available in NEMA 23, 34 and 42 frame sizes (60, 90 and 110 mm), providing up to 1,500 oz-in (1,059 N-cm) of torque.

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Hazardous Duty Synchronous Motors

Providing torque up to 1,500 oz-in (1,059 N-cm), these synchronous motors are available in UL Listed versions suitable for use in Class I, Division 1&2, Group D hazardous locations. Frame sizes are NEMA 42 and 66 (110 mm and 170 mm).

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Engineer the Exceptional

Learn how to engineer exceptional machines, robots and vehicles with the highest-performing, most reliable motors, drives, automation solutions and more.

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X Series Hazardous Duty Synchronous Motor Selection Guide >

The X series hazardous-duty AC synchronous motors provide torque up to 1,500 ozin (1059 N-cm) and are available in NEMA 42 and 66 frame sizes (110 mm and 170 mm). They run at 72 rpm with a 120 Vac or 240 Vac, 60 Hz power supply, or 60 rpm with a 240…

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Our high pole count SS Synchronous motors naturally turn at slower speeds (72 or 60 rpm). They only need a capacitor (C) network to operate from single-phase, 120VAC or 240VAC utility power. These motors provide the highest torque in an AC…
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Kollmorgen KS Synchronous Motor Selection Guide >

"Our high pole count KS Synchronous stepper motors naturally turn at slower speeds (72 or 60 rpm). They only need a resistor-capacitor (RC) network to operate from single-phase AC utility power. These motors provide the highest torque in an AC…