Deep Groove Ball Bearings of 6800 Series 6800 Series (also used to be known as 618 series) deep groove ball bearing is a widely used bearing type known for its simple and robust design. The "deep groove" refers to the close proximity of the balls to the raceways, which allows for higher load capacities and smoother operation. This design allows the bearing to support high radial loads and moderate axial loads in both directions. These bearings are prized for their high-speed operation, quiet performance, and ability to function reliably in a variety of applications, including industrial machinery, automotive systems, and household devices. These bearings are versatile, reliable, and commonly used in applications ranging from household appliances to industrial machinery.