In summary, the key differences between needle roller bearings and cylindrical roller bearings lie in their design, load-carrying capacity, and application suitability. Each type of bearing is tailored to meet specific operational requirements and environmental conditions in diverse industrial applications.

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.