Thrust bearings are used to control the crankshaft’s axial movement, meaning how much the crankshaft can move back and forth in the engine’s lengthwise direction. They are important for correct crankshaft control, stable operation and durability, especially in engine rebuilds, tuning and performance builds.
ACL bearings are often used in engine builds where precise and strong bearings are required for high load. Correct installation and correct axial bearing clearance are essential for oil pressure, reliability and engine life.
Always check crankshaft dimensions, bearing clearance and axial play before installation. Incorrect installation or incorrect bearing clearance can cause serious engine damage.