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   - Angular contact bearings are suitable for applications where precise positioning, controlled motion, and the ability to handle dynamic or oscillating loads are essential.

In summary, main bearings are primarily responsible for supporting the rotational motion of the crankshaft and withstanding radial loads, while thrust bearings are designed to counteract axial forces and maintain the axial position of the crankshaft. Both types of bearings play critical roles in ensuring the smooth and reliable operation of engines and machinery.