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