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Synchronous Motors 
Danaher Motion synchronous motors offer substantial advantages in applications needing their very unique capabilities.
Superior Electric and Pacific Scientific synchronous motors are high pole count motors that naturally turn at slower speeds (72 or 60 rpm @ 60 and 50 Hz respectively). They only need a resistor capacitor (RC) network to operate from single-phase AC utility power. For loads that operate at 72 RPM or slower, they are very cost effective and simple to use.
Other motor technologies (induction, DC, servo and step motors) either need gear reducers, or electronic drives to match the speed of synchronous motors. The cost of just the gear reduction or the cost of the electronic drive will usually exceed the total cost of these synchronous motor. For even slower speeds planetary gear reducers are offered. These synchronous motors produce very low speeds with only modest gear reductions.
72 rpm motor speed (with 60 Hz voltage) 60 rpm motor speed (with 50 Hz voltage)
Constant speed does not vary with the load
120 volt or 240 volt AC model
Torques: 50 to 1,060 N-cm (70 to 1,500 oz-in)
Gear reducers with ratios up to 125:1 and torques up to 3,670 N-cm (5,000 oz-in)
UL and CE hazardous duty versions
Fast starting, stopping, or reversing
Can be stalled indefinitely without overheating
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