Cage, rolling bearing, and method for molding cage

A cage made of synthetic resin and including an annular body and a plurality of prongs spaced away from each other in a circumferential direction of the annular body and protruding from the annular body to one axial side, the cage having a plurality of pockets for holding a plurality of rolling elements of a rolling bearing in a freely rollable manner, each of the pockets being formed between the prongs adjacent to each other in the circumferential direction, the cage comprising:

• a plurality of gate marks formed away from each other in the circumferential direction;
• a weld formed between the gate marks adjacent to each other in the circumferential direction;
• and
• a plurality of pocket forming portions that is each disposed between the gate marks and in which the pockets are formed, wherein
• each of the pocket forming portions has a through hole formed through a bottom of the pocket forming portions in an axial direction,
• the weld is formed between the gate marks only in a region on one circumferential side of the through hole or only in a region on another circumferential side of the through hole, and
• the weld includes:
• a first weld portion extending entirely in a radial direction in an axial view;
• and
• a second weld portion extending in the circumferential direction from a radial midpoint of the first weld portion to the through hole in the axial view.