To inhibit the increase of rotating resistance of an outer ring.

This roller follower includes a pair of side walls 4, 4 opposite to each other, a spindle 6 fixed in a state of being bridged over a pair of side walls, an inner ring 8 fitted to an outer diameter side of the spindle, the outer ring 12 externally mounted on an outer diameter side of the inner ring through a specific opposite clearance, and a plurality of rollers 10 mounted in a circular space between the outer ring and the inner ring, and the inner ring is rotatably fitted to the spindle.