Tapered roller bearing and cage

A cage for a tapered roller bearing, the tapered roller bearing including

• an inner ring that has an inner ring raceway provided on an outer peripheral side, a small flange portion provided on a first side of the inner ring raceway in an axial direction, and a large flange portion provided on a second side of the inner ring raceway in the axial direction, the large flange portion having a larger diameter than the small flange portion,
• an outer ring that has an outer ring raceway on an inner peripheral side, and
• a plurality of tapered rollers in rolling contact with the inner ring raceway and the outer ring raceway, the cage comprising:
• a plurality of pockets for accommodating the tapered rollers;
• a plurality of first lateral faces facing outer peripheral surfaces of the tapered rollers respectively accommodated in the plurality of pockets from a first side in a circumferential direction of the cage;
• and
• a plurality of second lateral faces facing the outer peripheral surfaces of the tapered rollers accommodated in the plurality of pockets from a second side in the circumferential direction of the cage, wherein
• the plurality of pockets includes a first pocket which defines a first angle between the first lateral face and the second lateral face, and a second pocket which defines a second angle smaller than the first angle between the first lateral face and the second lateral face, and
• each of the first angle and the second angle is between a first line and a second line crossing each other, the first line and second line passing through a radially inner end and a radially outer end of the first lateral faces in a cross section of the cage taken along a plane perpendicular to an axial direction of the tapered rollers, the second line passing through a radially inner end and a radially outer end of the second lateral faces in the cross section of the cage.