Pipe end preparation and cutoff tool

In a pipe end preparation tool having a tool axis, including a generally annular pipe-engaging support housing member extending along the tool axis, and a tool carrier ring member mounted on the end of the housing member for rotation relative thereto about the tool axis, the improvement comprising, said ring member connected to said housing member by a roller bearing assembly comprising two sets of rollers mounted on one of the members and respectively mounted for rotation about axes located in orthogonal planes, each set of rollers being circumferentially spaced about the ring and housing members, said rollers having peripheral bearing surfaces engaging and cooperating with circumferential bearing races provided on the other member, said races lying generally in the same respective orthogonal planes as said bearing rollers, said bearing surfaces arranged to lie within said bearing races, said bearing races comprising grooves with sidewalls extending parallel with and engageable by said bearing surfaces, whereby radial and thrust loading applied to the ring member can be reacted by the housing member through the bearing surfaces and bearing races.