Radial insert ball bearings are single row, ready-to-fit units made of a solid outer ring. The outer ring has a spherical or cylindrical outside surface. In combination with an INA housing matched to the design, bearings with a spherical outer ring can compensate for misalignment of the shaft, see link. They are located on the shaft by means of eccentric locking collars, grub screws in the inner ring, adapter sleeves, drive slots or fit. Available also with split outer ring as an aligning ring and thick-walled NBR interliner.