Abstract: A quick-opening bearing block containing a set of bearings to support a rotating shaft comprising a block base, mountable to a supporting surface, containing the lower bearing, a cover hinged to the base, containing the upper bearing, where the hinge is spaced apart from the bearings, and a T-shaped fastener mounted on the base between the bearings and the hinge, adapted to pass through a slot formed in the cover, to permit the cover to be opened and closed quickly, and thereafter locked down in closed position on top of the base to support the shaft in the bearings by simply twisting the fastener out of alignment with the slot.