Single row radial deep groove ball bearings 6000 series- extra light duty Simple design, be convenient when use. Advantage: low friction coefficient; high limit speed. Single row radial deep groove ball bearings are rigid and non-separable in design. They incorporate deep running grooves on their inner and out rings creating a ball path that accepts Axial and radial loading. The balls are separated by a cage that permits high speed operation. Their ability to accept misalignment Is very limited however. In normal operation they can't handle misalignment any greater than 10 angular minutes from their center position. Single row deep groove ball bearings have the highest speed capacity of all rolling element bearings, and are by far the most popular Bearing type in use today. Bearings are supplied in an open, shielded (zz), or sealed (2rs) design.