Caterpillar 9G-8715 Shaft

Caterpillar 9G-8715 is an OEM planetary gear shaft designed for Cat drivetrains. The Cat Parts Store lists 9G-8715 as “9G-8715: 47.1793mm Outer Diameter Planetary Gear Shaft,” and places it in the Drivetrain Transmissions & Components category under Other Transmission Components. This shaft represents a dedicated planetary gear component intended for use within planetary gear assemblies in Caterpillar transmission and drive systems. A verified spec accompanying the listing is a precise outer diameter of 47.1793 mm, a critical dimension that ensures proper engagement with planet gears and related housings in compatible 9G-series gear sets. As an authentic Caterpillar part, 9G-8715 is designed to match Cat planetary gear configurations to maintain alignment and load transfer in heavy equipment applications that rely on planetary gear drives.