Abstract: This invention relates to a mounting assembly for a roller having a bearing and a fastener. The fastener is at least partially shrouded by a sleeve, the end of which is keyed into the roller. Use of the sleeve provides an additional bearing surface to allow the roller to rotate with the bearing. Should the bearing seize, the sleeve and the roller are still able to rotate without affecting the fastener, that is, the fastener does not unravel and disengage from the housing. This invention has particular application to mounting of rollers to mower decks of a mowing implement.