Manufacturing method of outer ring of double row rolling bearing, vehicle driving force transmission device, and double row rolling bearing

摘要

PROBLEM TO BE SOLVED: To manufacture a double-row rolling bearing capable of supplying a large amount of lubricating oil to a plurality of rolling elements, a driving force transmission device for a vehicle provided with the double-row rolling bearing, and a method for manufacturing an outer ring of the double-row rolling bearing. offer. SOLUTION: A double-row conical roller bearing 1 has an outer ring 2 having a double-row outer raceway surfaces 21a and 21b on the inner circumference, and inner raceway surfaces 31a and 32a radially facing the outer raceway surfaces 21a and 21b on the outer circumference. It is provided with a pair of inner rings 31 and 32 having the above, and a plurality of conical rollers 41 and 42 arranged between the outer raceway surfaces 21a and 21b and the inner raceway surfaces 31a and 32a. The outer ring 2 has a cylindrical outer ring main body 21 and a flange 22, and has a first oil groove 201 provided on the axial end surface 22a of the flange 22 and a second oil groove 201 provided on the outer peripheral surface 21c of the outer ring main body 21. The oil groove 202 and the through hole 203 provided between the inner and outer peripheral surfaces of the outer ring main body 21 communicate with each other. The through hole 203 is opened between the outer raceway surfaces 21a and 21b of the double row on the inner peripheral surface of the outer ring main body 21. [Selection diagram] Fig. 3