Introducing our factory-made planetary carrier assembly for Caterpillar E311A, E311B, E311C, E311D, and E311F crawler excavator spare parts. Crafted with precision, our travel reduction gearbox's planetary gear set promises exceptional durability and reliable performance. As a factory, we prioritize maintaining the highest quality standards, ensuring efficiency and longevity in our products. Trust us to deliver the finest spare parts, tailored specifically for Caterpillar excavators, guaranteeing seamless operation and extended machine lifespan.