Rolling bearing cage, rolling bearing, and method of manufacturing rolling bearing cage

A method of manufacturing a rolling bearing cage, the rolling bearing cage being arranged between a pair of raceway rings and configured to retain rolling elements at predetermined positions,

• the method comprising forming a resin portion through injection molding of a resin material containing a solid lubricant with an annular body, which has pocket holes for receiving the rolling elements, being set as an insert component so that the resin portion comprises:
• first parts formed along inner peripheral surfaces of the pocket holes of the annular body to form pocket surfaces to be held in sliding contact respectively with the rolling elements;
• and
• a second part formed along an inner peripheral surface or an outer peripheral surface of the annular body to form a guide surface to be held in sliding contact with one of the pair of raceway rings,
• the first parts and the second part being formed integrally with each other,
• wherein a gate for injecting the resin material of the resin portion is formed along a molding surface for forming one end surface of the second part of the resin portion in an axial direction of the rolling bearing cage.