Tensioner having a roller assembly with a bearing and a roller having features for axially securing an outer bearing race of the bearing to the roller

A tensioner for tensioning a belt, the tensioner comprising:

• a base;
• an arm that is coupled to the base for movement relative to a movement axis;
• and
• a roller assembly having a bearing and a roller, the bearing supporting the roller relative to the arm for rotation about a roller axis that is spaced apart from the movement axis, the bearing having an outer bearing race, an inner bearing race, and a plurality of bearing elements that are disposed radially between the outer and inner bearing races, the roller having a wall member that defines a roller member, a bearing socket and one or more locking tabs, the roller member having an annular roller surface that is disposed concentrically about the roller axis and configured to engage the belt, the bearing socket having an annular bearing surface, which is disposed concentrically within the annular roller surface, and a stop that is disposed radially inwardly from the annular bearing surface, each of the one or more locking tabs having a proximal end, which is resiliently coupled to an adjacent portion of the wall member, and a distal end that projects radially inward from the proximal end and the annular bearing surface;
• wherein the bearing is received in the bearing socket such that the outer bearing race is disposed axially between the stop and the distal ends of each of the one or more locking tabs, and wherein the one or more locking tabs limit axial movement of the outer bearing race along the roller axis in a direction away from the stop.