How do you calculate the induced axial load in a tapered roller bearing pair?

Tapered roller bearings generate induced axial thrust Fa_induced = 0.5.Fr/Y from radial loads. For back-to-back or face-to-face arrangement under radial loads Fr1 and Fr2, compare 0.5.Fr1/Y1 with 0.5.Fr2/Y2. The bearing with smaller induced thrust carries the net external axial plus reaction. For bearing 1: Fa1 = 0.5.Fr2/Y2 + Ka (if this bearing carries net axial). Bearing life calculation uses equivalent load P = 0.4Fr + Y.Fa when Fa/Fr > e. Preload setting is critical: insufficient causes skidding, excessive reduces life. Adjust with shims or threaded adjusters.