Komatsu PC200-6 Travel Motor Hub

This travel motor hub serves as a critical rotating component within the final drive assembly of Komatsu PC200-6 series hydraulic excavators. Manufactured from high-strength alloy steel, it interfaces directly with the hydraulic motor output shaft and planetary gear carrier to transmit torque to the track sprocket. The component features precision-machined splines and bearing journals to maintain concentricity under high radial and axial loads typical in 20-ton class excavation operations. It is engineered to replace OEM housing and carrier components such as 20Y-27-21180 and 708-8F-31110, ensuring proper gear mesh and oil seal retention in the travel reduction gearbox. The hub assembly is compatible with machines equipped with Komatsu 6D102 and SAA6D102E diesel engines. It supports both standard and long-carriage undercarriage configurations including PC200LC-6, PC210-6, and PC220-6 models. Installation requires standard final drive disassembly tools and adherence to Komatsu torque specifications for the spindle nut and mounting bolts. Regular gear oil inspection and seal replacement are recommended at 2,000-hour intervals to prevent contamination-induced bearing failure.