Main bearings, crankshaft

The main bearings of the crankshaft are central components in the engine and ensure that the crankshaft is precisely mounted in the engine block. They bear the forces generated during combustion in the engine and enable smooth and low-friction rotation of the crankshaft.

The crankshaft converts the up-and-down motion of the pistons into a rotary motion via the connecting rods. This places very high mechanical loads on the bearings. The main bearings consist of special metal alloys and multi-layered bearing materials designed for high load-bearing capacity and optimal lubrication.

A thin film of oil, generated by the engine lubrication system, lies between the crankshaft and the main bearing. This oil film prevents direct metal-to-metal contact and reduces wear and friction within the engine. Precise bearing manufacturing is crucial to ensure proper oil pressure build-up and stable crankshaft guidance.

Worn main bearings can lead to engine knocking, reduced oil pressure, or serious engine damage. Therefore, main bearings are frequently replaced during engine overhauls to restore reliable engine operation.

At Autoteile Gossau, you'll find crankshaft main bearings for numerous vehicle models, available in both original equipment and high-quality aftermarket versions. Our replacement parts meet manufacturer specifications and ensure reliable crankshaft support within the engine. Benefit from our exceptionally competitive prices in Switzerland, fast delivery, or the option to pick up your order directly from our shop in Gossau and pay by cash or card.