SS241LE by Danaher

The Danaher SS241LE synchronous motor from the Slo-Syn Synchronous Motors series delivers reliable, low-speed operation with precision torque control for industrial automation applications. This compact unit produces 240 oz-in (169 N-cm) motor torque at a nominal 72 RPM when driven at 120 V and 60 Hz, making it well suited for indexing tables, valve actuators, and conveyor positioning. The integration of a phase-shifting capacitor rated at 250 VAC and 7.5 µF capacitance enables optimized power factor correction and smooth start-up characteristics. Housed in a robust IP42 enclosure on a 90 mm (NEMA 23) frame, the SS241LE ensures consistent performance in environments subject to moderate dust and water ingress. With support for ambient temperatures ranging from –40 to 60°C, this motor maintains operational stability across a wide thermal spectrum.

Detailed electrical and mechanical specifications define the SS241LE’s performance envelope for precise system design. Peak current draw is limited to 0.5 A under full load, while the internal phase-shifting capacitor kit (PN 201053-037) provides the prescribed reactive compensation. The unit handles a maximum load inertia of 0.40 kg-cm² (4 lb-in²) without compromising step accuracy, and altitude operation extends up to 30,000 ft (9,100 m) above sea level. The motor’s operating temperature range of –40 to 60°C and humidity tolerance of 5–95% non-condensing safeguard internal components under demanding environmental conditions. All specifications are factory tested to ensure compliance with ANSI/IEEE performance standards for synchronous motor operation.

Operational features of the SS241LE include precise phase alignment and minimal hunting for stable torque output under varying load conditions. The phase-shifting capacitor design affords consistent rotational speed and torque ripple reduction, especially in low-speed regimes. Vibration and thermal stresses are managed by the rugged IP42 enclosure, which protects against solid particles larger than 1 mm and dripping water at up to 15° tilt. Lead configurations are available in multiple termination styles—terminal box, covered capacitor, or rear shaft—to accommodate diverse mounting requirements and cable routing constraints. Consistent shaft speed at 72 RPM ensures repeatable indexing cycles, making the SS241LE ideal for high-precision automation systems.

System integration is streamlined through standardized NEMA mounting dimensions and compatibility with common motor controllers and drive electronics in industrial automation. The SS241LE supports direct-drive coupling or belt-drive arrangements in packaging machinery, textile equipment, and rotary indexing tables. Its combination of Frame Size: 90 mm (NEMA 23), Voltage: 120 V, and phase cap design allows plug-and-play replacement in legacy installations or new equipment builds. Engineers targeting precise motion control will find the SS241LE particularly suited for valve actuation, medical device positioning, and robotics end-of-arm tools.