Shock-absorbing collet chuck holder

A shock-absorbing collet chuck holder mountable on a spindle device for holding a cutting tool, comprising:

• a chuck member extending along and surrounding an axis, said chuck member including a chuck section to be held by the spindle device, a cutter section opposite to said chuck section along the axis, and a grip section interconnecting said chuck section and said cutter section;
• a collet member coaxially engaged with said cutter section and adapted for holding the cutting tool;
• a collet nut surrounding and engaged with said cutter section, and movable relative to said cutter section in a direction of the axis and permitting the cutting tool to extend therethrough such that, by moving engagement of said collet nut toward said chuck section, said collet member is pressed inwardly to tighten the cutting tool, said collet nut being made of an engineering plastic material;
• and
• a grip sleeve disposed on said grip section to be gripped by an auto-tool device or a robotic arm, and being made of an engineering plastic material.