Roller Bearings, a specific subcategory within Bearings in the Power Transmission category, are designed to carry heavy loads with minimal friction. Unlike ball bearings, which use spherical balls, roller bearings use cylindrical rollers that provide a larger contact area with the races. This design enables them to handle higher radial loads compared to ball bearings, making them ideal for applications subjected to heavy loads and high pressure. Roller bearings come in several types, including cylindrical, spherical, and tapered roller bearings, each tailored for different load-bearing and alignment requirements. These bearings are widely used in industrial machinery, automotive transmissions, rail vehicles, and heavy equipment. Their capacity to manage significant load differences efficiently makes them crucial for ensuring the operational reliability and longevity of various mechanical systems.