This bearing washer provides the flat raceway surface required alongside needle roller bearings, with a width of 7.0 mm and a net mass of 393.0 g. It is designed as a mating component, taking axial loads directly on its ground face rather than acting as a rolling element itself. Symbol LS120155 is suitable for use with AXK and K811 needle roller sets, forming the axial bearing arrangement together with the needle cage. Its flat design allows correct load distribution across the roller ends, and it should be paired with a needle bearing of matching bore and outside diameter to complete the assembly.