SS241LG12 Danaher
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The Danaher SS241LG12 is part of the Slo-Syn Synchronous Motors series and operates at 120 Vac, 60 Hz, and single phase with a rated current of 0.10 A. This motor features a gear ratio of 12:1 with gearbox efficiency of 77 percent and provides a minimum output torque of 2,218 oz-in at an output speed of 6 RPM. It supports an axial load capacity of 100 lb and a radial load capacity of 150 lb, with a maximum load inertia of 273 lb-in².
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Product Description:
The SS241LG12 is a geared synchronous stepping motor manufactured by Danaher and supplied through the Slo-Syn Synchronous Motors series. It combines a permanent-magnet motor with a spur gearbox in a single assembly that delivers low-speed, high-torque motion for indexing tables, metering pumps, and light conveyor stations. Because the motor advances in discrete steps, it supports precise positioning during repetitive cycles without requiring feedback sensors or a separate external reducer.
The mechanical reduction stage has a 12:1 gear ratio, so twelve rotor revolutions produce one output-shaft revolution and limit the output speed to 6 rpm. Minimum stall torque reaches 2,218 oz-in, providing substantial resistance to movement when the shaft is stationary. The gear train operates at 77% efficiency, allowing most of the motor’s mechanical output to reach the connected load. The winding circuit draws 0.10 A, which limits the electrical load placed on the control circuit. The gear train has 61 degrees of input lost motion and 2 degrees of output backlash, which must be considered in applications requiring bidirectional positioning. Single-phase excitation simplifies the required control arrangement. Installation uses a 3.875-inch bolt circle with 0.223-inch through holes, providing a secure mounting pattern for the motor assembly.
The coil set operates from 120 VAC at 60 Hz and must be connected through a compatible control circuit. The shaft permits an axial load of up to 100 lb and a radial side thrust of up to 150 lb, allowing it to support properly aligned pulleys, sprockets, or lead screws. Reflected load inertia must remain below 273 lb-in² to reduce the risk of missed steps during rapid acceleration or deceleration. The attached leads are 12 inches long, providing sufficient reach for connection to a nearby terminal strip. Proper load alignment is necessary to prevent excessive bearing stress and preserve consistent output motion during repeated operating cycles.
