Abstract: A rod driver gear for a tubing expander is operable to drive a rod having a circumferentially extending outer surface with a plurality of grooves extending traversely across a longitudinal axis of the rod. The rod driver gear includes an annular body rotatably mounted to a frame of the tubing expander and connected to a power source of the tubing expander. The annular body has a ridged outer diameter surface. Each ridge of the outer diameter surface is dimensioned to extend into the grooves of the rod to sequentially engage the grooves of the rods when the power source rotates the annular body to thereby move the rod along the longitudinal axis of the rod. In a preferred embodiment, the outer diameter surface of the annular body has a plurality of grooves extending across the surface, and a plurality of pins are inserted through a bore into the grooves. A portion of the pins extends from the grooves to constitute the ridges.