Spherical roller bearings have two rows of symmetrical rollers, a common sphered outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis . The centre point of the sphere in the outer ring raceway is at the bearing axis. 

Bearing features

• Accommodate misalignment 
  Spherical roller bearings are self-aligning like self-aligning ball bearings or CARB bearings .
• High load carrying capacity 
  Spherical roller bearings are designed to accommodate both heavy radial loads and axial loads in both directions.
• Long service life 
  The rollers are manufactured to such tight dimensional and geometrical tolerances that they are practically identical in a roller set. The symmetrical rollers self-adjust , providing optimal load distribution along the roller length and together with the special profile prevent stress peaks at the roller ends .
• Low friction 
  Self-guiding rollers keep friction and frictional heat at low levels . A floating guide ring guides unloaded rollers so that they enter the load zone in the optimal position.
• Robust 
  All SKF spherical roller bearings contain strong window- or prong-type cages.