Product Description:

The SN31HCYR-LNK-NS-01 is a low-speed synchronous motor designed by Pacific Scientific and supplied within the Powersync Synchronous Motors series. Intended for industrial automation, the unit converts single-phase line power into precise rotary motion so conveyors, index tables, or metering mechanisms can maintain constant speed without electronic drives or feedback devices. Its square frame and keyed shaft allow straightforward coupling to pulleys or gearboxes, giving machine builders a rugged electromechanical component that locks into synchronism with the applied supply frequency.

Its frame size is NEMA 34, meaning the mounting face and pilot diameter follow that bolt pattern used by other motors in the same class. The housing measures 3.38 inches on each side, yielding a compact square profile that fits crowded panels while still dissipating heat through its aluminum case. When connected to a 50 Hz source at 120 V ac, the rotor locks to the sinusoidal field and turns at a synchronous rate of 60 RPM. Heavy-duty NEMA mounting flanges support direct attachment to equipment frames, and a factory-installed shaft seal blocks dust or coolant ingress. Because the construction type is standard and no encoder is fitted, the motor provides open-loop operation suitable for fixed-speed tasks without position monitoring.

Electrical connection is handled through a System MS connector, which mates with industry-standard cordsets and routes the motor’s 3 leads to contactors or manual starters. Inside the stator, a laminated rotor built from stacked silicon-steel plates minimizes eddy-current loss and is arranged as a single axial stack to balance torque with inertia. Mechanical power exits on a single shaft that carries a straight-key slot for secure coupling to sprockets or couplings. The design follows the manufacturer’s standard motor configuration, and the motor uses standard dimensions and thermal characteristics without custom modifications.