Abstract: A cracking die assembly which is adapted for use in a high production nutcracking apparatus of the type wherein a nut is held between an anvil and a cracking die, and a shuttle then impacts against the rear end face of the cracking die to sharply advance the cracking die and thereby crack the shell of the nut. The cracking die assembly includes a mounting sleeve having a bore with an internal shoulder, and a tubular retainer mounted within a portion of the sleeve bore so as to engage the shoulder of the sleeve. An annular gasket is fixedly mounted in the bore of the retainer, and the cracking die is mounted in the bore of the retainer, and the cracking die has a radial flange which is positioned to lie between the shoulder in the bore of the sleeve, and the gasket. Also, the gasket and radial flange have conforming conical surfaces which engage when the cracking die is impacted by the shuttle, to thereby absorb the impacting force of the shuttle.