The shielded or sealed deep groove ball bearings simplify the sealing structure of applications and are designed for use with a rotating inner ring. Greasing will not be necessary as these bearings are pre-lubricated.
These bearings are single-row deep groove ball bearings with a filling slot on both the inner and outer rings. They feature an enhanced radial load rating as they can contain more balls of larger diameter. Not suitable for applications that involve axial loading or high-speed rotation. When the bearing is installed, the filling slot on the fixed bearing ring should be in a no-load area.