Abstract: A rolling tool assembly is provided that has a generally three-piece housing construction including a main, generally C-shaped body or frame member and a pair of opposing side plate members, that are fastened together to close off the open sides of the generally C-shaped body member for forming an interior space into which the remaining components of the rolling tool assembly can be mounted. In one alternative, the body member is made to be of a standard size with the side plate members being custom-made so that the side plate members vary in predetermined dimensions thereof to correspond to the size of the crankshaft bearing to be rolled. In another alternative, the side plate members are made to be of standard size while the body member is custom-made to vary in predetermined dimensions thereof to correspond to the size of the crankshaft bearing to be rolled.