Axial swage tool having a stabilizing pin

A swaging system for joining two tubes together, the swaging system comprising:

• a fitting having a sleeve for receiving the tubes and a swaging ring, the swaging ring axially moveable over the sleeve to cause the ring to apply a radial force to the sleeve to thereby swage the sleeve to one of the tubes;
• a swaging tool including
• a tubular housing having a first end, a second end, an interior surface, a first end portion that is open at the first end, a second end portion at the second end defining a closed cylinder having a port for receiving pressurized fluid, and a middle portion between the end portions,
• a first jaw unit on the first end portion of the housing to engage one of the swaging ring or the sleeve of the fitting and to restrain said one of the swaging ring or the sleeve from axial movement,
• a ram movable in opposite axial directions in the cylinder of the second end portion of the housing, the ram having an interior surface defining a bore,
• a piston movable in opposite axial directions in the middle portion of the housing and into engagement with the ram, the piston having an interior surface,
• a second jaw unit on the piston to engage the other of the ring or the sleeve of the fitting and to move said other of the swaging ring or the sleeve toward the first jaw unit upon movement of the piston in a first axial direction within the housing,
• a stabilizing pin slidably received through the piston and into the bore of the ram, the stabilizing pin having a first end portion located between the first end of the housing and the piston and an elongated portion having an exterior surface engaging the interior surfaces of the ram and the piston, and
• the ram and the first end portion of the stabilizing pin each having bearing means for reacting moments generated by the second jaw unit during swaging directly into the housing, and
• a source of hydraulic pressure secured to the port for pressurizing the closed cylinder of the housing.