Designs and variants

SKF standard assortment

  • bearings in the QJ 2 and QJ 3 series (fig. 1)
  • some sizes in the QJ 10 and QJ 12 series
Bearings with locating slots

Four-point contact ball bearings can be supplied with two locating slots in the outer ring (designation suffix N2, fig. 2):

  • preventing the bearing from turning
  • positioned 180° apart

The dimensions and tolerances of the locating slots are in accordance with ISO 20515 and are listed in table 1.


SKF four-point contact ball bearings are fitted with one of the cages shown in table 2.

For additional information about the suitability of cages, refer to Cages and Cage materials.

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