The axial bearing disc, code 11.10121-0122.0, plays a critical role in managing axial forces acting on the crankshaft in the MAN L21/31 engine. By absorbing and distributing thrust loads generated during engine operation, it prevents excessive axial movement of the shaft and protects adjacent bearing surfaces from premature wear. Its robust construction and precise tolerances are essential for maintaining stable crankshaft positioning, reducing vibration, and ensuring reliable engine performance under variable load conditions.