Product Description:

The SS451-1032 is a synchronous step motor produced by Danaher within the Slo-Syn Synchronous Motors series. It is intended for position-holding and low-speed drive tasks that require a constant speed from the AC power supply without closed-loop control. When integrated into indexing tables, conveyors, or dispensing machines, the motor locks its rotor to the line frequency, providing constant torque for precise incremental motion in industrial automation.

During operation, the stator windings accept a single-phase supply of 120 Vac at the standard utility frequency of 60 Hz. With this supply, the line current is limited to 0.80 A, so cabinet fusing and wiring can be sized accordingly. The synchronous relationship between the 60 Hz input and the five-pole rotor produces a rated shaft speed of 72 rpm, eliminating the need for reduction gearing in slow-turn applications. A minimum pull-out torque of 450 oz-in is maintained across the synchronous range. The motor can be directly coupled to loads with inertia up to 16 kg-cm². Proper phase shift is established by an external run capacitor rated at 14 µF, which must be wired in series with one winding to develop the quadrature field needed for startup and steady rotation. Thermal rise is limited by the modest current draw, and the cylindrical housing remains within its maximum body diameter of 3.385 in to simplify enclosure design.

Mechanical integration is supported by a shaft that extends 1.19 ± 0.04 in from the front face and measures 0.3750 in in diameter, with a 1.00 ± 0.01 in usable flat for set-screw couplings. The front flange has a pilot diameter of 2.875 ± 0.002 in and mounting holes measuring 0.223 in in diameter on a 3.875 in bolt circle, allowing the motor to align with gearheads or brackets without shims. The shaft can withstand a radial force of 25 lb and an axial thrust of up to 50 lb, allowing moderate belt tension or end loading while remaining within the bearing limits.