To increase the maintenance intervals of grease by suppressing agitation heat generated when the grease is agitated even when the grease of such an amount that can sustain lubricating performance for a long period is sealed in a bearing.

This tapered roller bearing 14 comprises a plurality of tapered rollers 14d held on a cage 14e interposed between inner and outer rings 14a and 14b and the grease sealed therein to seal the inside thereof. A projected part 20 for extruding the grease having a tilted surface 20a tilted to a diagonal rear side relative to the rotating direction of the cage 14e is formed on the axial one large diameter side lug part 14e2 of the cage 14e.