A deep groove in a ball bearing refers to the specific design feature of the bearing's inner and outer raceways, which allows it to accommodate radial and axial loads while enabling smooth and efficient rotation. The deep groove is a critical aspect of the ball bearing's construction and contributes to its performance in various applications.

   - Tapered Roller Bearing: Tapered roller bearings are known for their ability to support both radial and axial loads, making them suitable for applications where heavy loads and precise motion control are required. They are commonly used in automotive, industrial, and heavy equipment applications.