Part Number 3189, Tapered Roller Bearings -
2 Based on 90 x 10 6 revolutions L 10 life, for The Timken Company life calculation method. C 90 and C a90 are radial and thrust values for a single,row, C 90(2) is the two,row radial value. 3 These maximum fillet radii will be cleared by the bearing corners. 4 Negative value indicates effective center inside cone backface.