The deep groove in a ball bearing is a fundamental design feature that enables the bearing to provide smooth and reliable operation, reduce friction, and support loads in a variety of mechanical systems. Its ability to accommodate radial and axial loads while maintaining efficient rotation makes deep groove ball bearings essential components in many types of machinery and equipment.

The deep groove design is particularly advantageous for radial loads, as it enables the bearing to support forces that act perpendicular to the shaft's axis. Additionally, the deep groove configuration allows the bearing to accommodate some degree of axial load, although axial load capacity is typically lower than radial load capacity in deep groove ball bearings.

   - Tapered Roller Bearing: Tapered roller bearings consist of tapered rollers and raceways, with the rollers and raceways designed to meet at a common point on the bearing axis. This design allows the bearing to support both radial and axial loads, as well as combinations of these loads, making them suitable for applications where precise motion control and high load-carrying capacity are essential.