The performance of bearing sets depends mostly on the accuracy of the matching operation.

To satisfy this condition SNFA bearing sets are made up as follows:

  • reduced tolerance of gap between bearing faces in combination with high precision measurement loading
  • uniform contact angle
  • minimum bore and outside diameter difference (about one third of respective tolerances)

Observing the following recommendations is essential in using SNFA bearing sets;

  • never exchange bearings from different sets
  • assemble the bearing sets as indicated by the V marked on the bearing outside diameter surface (the tip of this V points in the directions of the predominant axial thrust acting on the inner rings)
  • the axis of the V is at the point of maximum eccentricity (maximum radial thickness) of the outer ring of each bearing