Tool holder and tool magazine

A tool holder attachable to a spindle including a spindle bore, a circumferential groove located on an outer periphery of the spindle, and a drive slot connected to the circumferential groove, the tool holder comprising:

• a tool body including a shank configured to be received in the spindle bore;
• an operation sleeve disposed radially outside of the tool body, the operation sleeve configured to be urged toward a basal end of the spindle, the operation sleeve reciprocable along axial direction of the spindle, the operation sleeve including
• a drive key configured to be received in the drive slot to transmit rotation of the spindle to the tool body, and
• a receiving portion located on an outer periphery of the operation sleeve,
• a holder elastic body configured to urge the operation sleeve toward the spindle with respect to the tool body;
• and
• a hold ring disposed on the tool body, the hold ring including a hold claw configured to extend through the drive slot to be hooked on the circumferential groove.