Clamping element for tool holders

A clamping system for releasably connecting a clamping device to an interior of a second component, said clamping device comprising:

• a shaft comprising (i) a length extending along a longitudinal axis of said shaft, (ii) opposing first and second ends;
• (iii) a diametral outer surface, (iv) a pair of mutually opposing recesses located on said diametral outer surface, each of said recesses having a bottom surface, and opposing first and second walls, each of said walls having a height above said bottom surface that varies up to a portion of greatest height, said first wall having a rounded or chamfered contour such that the distance between said walls increases to a maximum near said portion of greatest height, said first wall being closer to said first end of said shaft than said second wall, (v) a first aperture extending along at least a portion of said length of the shaft, and (vi) a second aperture extending through said shaft connecting said bottom surfaces of said recesses;
• two clamping segments, one slidably mounted within each recess, each of said clamping recesses having opposing first and second opposing outer surfaces that correspond to the first and second walls of said recess, respectively;
• a spindle located within said second aperture of said shaft and located between said two clamping segments, said spindle having a length extending between said two clamping segments and having an aperture perpendicular to said length;
• and
• a coolant tube located within said first aperture of said shaft and within said aperture of said spindle.