Bearings are precision components enabling smooth, controlled rotational or linear movement between vehicle parts. Primarily utilized within wheel hubs, transmissions, engines, and steering systems, they minimize friction and support axial and radial loads. Construction typically involves hardened steel balls or rollers contained within inner and outer races, with varying materials and cage designs optimized for specific load, speed, and temperature requirements. Sealed or shielded designs provide contamination protection, while tapered roller bearings handle combined radial and thrust loads common in wheel applications. Specialized bearing types, such as needle bearings and thrust bearings, address unique automotive demands for compactness or axial force support.