Single Row Angular Contact Ball Bearings Loads

When a radial load is applied to a single row angular contact ball bearing, the load is transmitted from one raceway to the other at an angle to the bearing axis and an internal axial load is induced. This must be considered when calculating the equivalent bearing loads for bearings in adjusted arrangements consisting of two single bearings and/or bearing pairs arranged in tandem.

The equations are only valid if the bearings have identical contact angles and are adjusted against each other to practically zero clearance, but without any preload. In the table, bearing A is subjected to a radial load F_rA and bearing B to a radial load F_rB. Both F_rA and F_rB are always considered positive, even when they act in the direction opposite to that shown in the figures. The radial loads act at the pressure centres of the bearings (distance a, refer to product table).

The values for basic load ratings and fatigue load limits listed in the product table apply to single bearings. For universally matchable bearings mounted immediately adjacent to each other, the following values apply:

• basic dynamic load rating for standard bearings in all arrangements and for LILY Explorer bearings in a back-to-back or face-to-face arrangement:
  C_pair = 1,62 C_{single bearing}
  
  
• basic dynamic load rating for LILY Explorer bearings in a tandem arrangement:
  C_pair = 2 C_{single bearing}
  
  
• basic static load rating:
  C_{0 pair} = 2 C_{0single bearing}
  
  
• fatigue load limit:
  P_{u pair} = 2 P_{u single bearing}