Main bearing pair for Komatsu GD511A

The main bearing pair supports the crankshaft within the internal combustion engine, facilitating smooth rotation while managing radial and axial loads generated during operation. These bearings maintain precise crankshaft alignment and ensure the necessary clearance for effective oil film formation, which is required for proper engine function. By separating the crankshaft from the engine block, these components manage the forces exerted during the combustion cycle.

This component is compatible with the Komatsu S6D95L-1 engine found in the Komatsu GD511A and GD511A-1 motor graders. The part number 6204-28-8100 refers to a set of plain bearings consisting of two half-shells. These bearings are engineered to meet the specific tolerances required for the S6D95L-1 engine block and crankshaft assembly.

Main bearings function as plain bearings that rely on a hydrodynamic oil film to minimize metal-to-metal contact. They are installed in the engine crankcase to provide a stable surface for the crankshaft journals to rotate against. Proper installation and maintenance of these bearings are necessary to support the structural integrity of the engine assembly and to prevent damage to the crankshaft or engine block during operation.