Patent ID: 8641290
Filing Date: 2014-02-04
Classification: F16C

Abstract:
1. A tapered roller bearing comprising: an outer ring having an outer ring raceway surface undergoing crowning; an inner ring having an inner ring raceway surface undergoing crowning; and plural tapered rollers having a rolling surface undergoing crowning, which are located as rolling universally between said outer and inner ring raceway surfaces, wherein the total crowning amount, defined as the sum of crowning amount of outer ring, the crowning amount of inner ring and two times the crowning amount of the roller, is more than 50 μm, the crowning ratio of the outer ring, defined as crowning amount of outer ring divided by the total crowning amount, is 40% or more, and the roller crowning ratio, defined as two times the roller crowning amount divided by the total crowning amount, is 20% or less.