The deep groove in a ball bearing is characterized by a raceway with a deep, concave profile that forms a continuous, circular track for the bearing's rolling elements, typically steel balls. This design feature allows the balls to move freely within the raceway, distributing the load evenly and minimizing friction during rotation. The deep groove also provides space for the lubricant, which helps to reduce wear and heat generation, ensuring the bearing's longevity and reliability.

   - 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.