In summary, the function of a single row deep groove ball bearing includes supporting radial and axial loads, reducing friction, enabling smooth rotation, distributing loads, and facilitating proper lubrication. These functions make single row deep groove ball bearings essential components in a wide range of machinery and equipment across various industries.

   - Needle Roller Bearings: Needle roller bearings are capable of supporting high radial loads in applications with limited radial space. Their compact design and high load-carrying capacity make them suitable for use in automotive transmissions, small engines, and other machinery with space constraints.