- Main bearings, also known as crankshaft bearings, are designed to support the crankshaft within the engine block. They are positioned at the main bearing journals of the crankshaft and provide support for the rotational motion of the crankshaft. Main bearings are subjected to radial loads and are crucial for maintaining the alignment and smooth rotation of the crankshaft.

   - Taper Roller Bearings: Taper roller bearings are not designed to accommodate misalignment to the same extent as spherical roller bearings. They are more suitable for applications where precise axial and radial load support is required without significant misalignment.