Involute and straight sided splines as well as serrations can be produced by hobbing, shaping, broaching, and rolling. Both internal and external splines can be cut using our CNC gear cutting machines, including internal or external helical splines. Hobbed splines can be made in lengths up to 50-60", depending on the diameter. Shorter splines can be cut up to 36" in diameter, either internals with up to 9" face length, or externals with longer lengths. For external, the exact length depends on the diameter of the spline and the configuration of the overall part.