Caterpillar 4V-4501 Planetary Gear Shaft Assembly

The Caterpillar 4V-4501 Planetary Gear Shaft is a steel planetary shaft used in Cat planetary gear sets, built to withstand high-load operation in heavy equipment transmissions. Cataloged under part number 4V-4501, this shaft features an outer diameter of 47.19 mm and is manufactured from steel to Cat’s engineering standards for surface finish and dimensional accuracy. As the planetary shaft in a planetary gear arrangement, it transmits torque between the input and output stages of the gear train and interfaces with planet gears and carriers within Cat gear sets. This component is designed for compatibility with Cat planetary gear assemblies, serving as a robust, precise element in drive systems that require reliable performance. The 4V-4501 designation helps technicians identify the correct replacement part in Cat’s catalog and ensures proper fitment with other Cat components in planetary gear configurations. With verified material and dimension data, this shaft provides the essential strength and geometry required for proper meshing and load distribution in Cat planetary gear applications.