Patent ID: 8308373

Claim:
A pin type cage comprising: a first ring having a plurality of through holes placed so as to be circumferentially spaced from one another; a pin which is inserted into a through hole of a roller and which has a through-hole placement portion placed within the through hole of the first ring; an outer tapered member having an outer surface in contact with an inner circumferential surface of the through hole of the first ring, an end face located on axial one side, and an annular or generally annular tapered inner surface whose inner diameter increases with increasing axial distance from the end face; an inner tapered member having an inner surface in contact with the through-hole placement portion of the pin, an end face located on axial one side opposite to the end face side of the outer tapered member, and an annular or generally annular tapered outer surface whose outer diameter decreases with increasing axial distance from the end face and which is in contact with the tapered inner surface of the outer tapered member; and a screw member which has a screw portion and which is in direct contact with or in contact via an intervenient with one end face out of the end face of the outer tapered member and the end face of inner tapered member, wherein a circumferential surface out of an inner circumferential surface of the through hole of the first ring and an outer circumferential surface of the pin has a screw portion that is screwed with the screw portion of the screw member, the pin type cage further has a move-preventing portion which adjoins one circumferential surface out of the inner circumferential surface of the through hole of the first ring and the outer circumferential surface of the pin so as to be in direct contact with or in contact via an intervenient with the other end face out of the end face of the outer tapered member and the end face of the inner tapered member so that the move-preventing portion prevents the end face of the inner tapered member from moving toward one side opposite to the end face side of the outer tapered member in the axial direction, the one end face and the other end face are pressed axially by an axial force generated by being sandwiched between the screw member and the move-preventing portion, so that the tapered inner surface of the outer tapered member and the tapered outer surface of the inner tapered member are pressed by each other, the first ring and the pin are fixed by at least one of the pressing of the outer surface of the outer tapered member against the inner circumferential surface of the through hole and the pressing of the inner surface of the inner tapered member against the through-hole placement portion of the pin, and the pin type cage includes a weld part which is in contact with the screw member, and one of the first ring having the screw portion to be screwed to the screw portion of the screw member and the pin.