This four-point contact bearing carries radial load and axial load in both directions within a single row, using a split inner ring construction that allows the balls to contact each ring at four points under load. Bore diameter is 55.0 mm, outside diameter 120.0 mm, width 29.0 mm, and net mass is 1.685 kg. The bearing is fitted with a solid brass cage (MPA), permitting a limiting speed of 11400.0 1/min and a reference speed of 5000.0 1/min. The split inner ring design lets this bearing take up axial loads from both directions in a compact single-row arrangement, replacing configurations that would otherwise need two angular contact bearings mounted back-to-back. The solid brass cage gives stable ball guidance and supports the higher limiting speed rating, while the open design requires the mounting arrangement to provide its own sealing and lubrication supply. Correct axial positioning during mounting is required to maintain the four-point contact geometry across both directions of thrust load.