This shaft locating washer is a component of an axial cylindrical roller bearing assembly of the 811 series, designed for single-direction axial load transmission. It has a bore diameter of 35.0 mm and a net mass of 29.5 g. As one of the mating rings, it is used together with matching components such as K811 and GS to form a complete axial cylindrical roller bearing set. The washer provides the flat raceway surface against which the rollers run, transmitting axial load in one direction only. Its function requires correct axial alignment with the shaft and housing surfaces during assembly, and it must be paired with the corresponding cage and housing washer to achieve the intended axial load path.