Patent ID: 7306238

Claim:
A tool-holding chuck assembly comprising: a collet for receiving a cutting tool shank having at least one coolant access hole therethrough, the collet having a nose; a lock nut for creating a gripping force between the collet and the cutting tool shank, the lock nut having an outer front face that is substantially flush with the nose of the collet; a coolant sealing ring attached to the lock nut so that the coolant sealing ring may be detached from the lock nut, the coolant sealing ring being structured to permit the tool shank to extend therethrough, wherein the coolant sealing ring comprises: a sealing disk through which the tool shank may extend and a sealing disk cap for receiving the sealing disk; a first fluid tight seal between the sealing disk cap and the lock nut; a second fluid tight seal between the sealing disk cap and the sealing disk; and a third fluid tight seal carried by the sealing disk that is adapted to engage the tool shank.