Hydraulic coupling system for coupling a shell mill to an adapter

A hydraulic coupling system, comprising:

• an adapter including a pilot disposed on and extending from an end face, the pilot having an outer surface formed at a non-zero angle with respect to a central, longitudinal axis of the hydraulic coupling system;
• a shell mill including a central counter bore in an end face for enabling the pilot of the adapter to be inserted therein;
• a threaded member including a threaded head portion and a shaft portion having at least one sealing member, the threaded member capable of being threaded into a threaded bore of the shell mill;
• and
• a chucking membrane including a first flange at one end, a second flange at an opposite end, and an intermediate portion disposed between the first and second flanges, the chucking membrane having an inside surface formed at a non-zero angle with respect to the central, longitudinal axis of the hydraulic coupling system, the chucking membrane being disposed between the pilot of the adapter and the shell mill in such a way that the intermediate portion forms a fluid-tight channel for hydraulic fluid,
• wherein the threaded member exerts pressure against the hydraulic fluid, which causes pressure to be against the chucking membrane, and in turn, causes the chucking membrane to exert pressure against the pilot of the adapter, and
• wherein the non-zero angles of the pilot and the chucking membrane cause an axial force to seat the end face of the shell mill firmly against the end face of the adapter.