Superior Electric SS451LE SloSyn Synchronous Motor

Superior Electric's SS451LE Slo-Syn Synchronous Motor is a 34-frame, single-phase AC motor in the Slo-Syn family, designed for precise, constant-speed operation at 72 RPM with a nominal torque of 450 oz-in when powered from 120 VAC. The model sits in the 120 V, 60 Hz class and draws about 16 A under rated conditions, with a measured load inertia around 0.80 lb-in^2, making it well-suited for low-speed applications that require stable torque and speed. The housing length for this 34-frame motor is approximately 4.32 inches, aligning with standard Slo-Syn footprints for retrofit or replacement in existing equipment. Like other Slo-Syn synchronous motors, operation uses an external phase-shifting capacitor; for the SS451LE, the recommended capacitor kit is 201053-042, reflecting the traditional design that uses a capacitor to establish the rotating field and timing. The SS451LE is part of the historical SS451 series documented in Slo-Syn catalogs, and in North American installations the 120 V, 60 Hz rating corresponds to common power systems encountered in legacy automation gear.