Patent ID: 8894292

Claim:
A split outer ring of a split rolling bearing which splits in a radial direction, the split outer ring comprising: a pair of split outer ring members which are each formed into a semi-cylindrical shape and which are formed into a cylindrical shape by being butted against each other at circumferential end portions, wherein a pair of first flat plane portions which extend from both axial end edges of the end portions towards a center in parallel with an axis and a V-shaped recess portion, positioned between the first flat plane portions and is recessed in a circumferential direction relative to the pair of first flat plane portions, are formed at one end portion of the circumferential end portions which are butted against each other, and a pair of second flat plane portions which extend from said both axial end edges in parallel with the axis so as to be brought into abutment with the pair of first flat plane portions and a projecting portion which is formed between the pair of second flat plane portions and which projects circumferentially into a shape which corresponds to the recess portion so as to be introduced into the recess portion are formed at the other end portion which is butted against the one end portion, and wherein a space is formed between the recess portion and the projecting portion so as to avoid a contact between a bottom portion of the recess portion and a vertex portion of the projecting portion.