Self-tightening tool holder SP

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Maximum total integrated run-out of 0,04 mm (.0016”). Self-tightening feature automatically increases gripping force in proportion to increased torque to prevent tool shank slippage. For right-hand rotation applications only. Permits use on high accuracy drill presses, jig borers, milling machines and production drilling equipment. All components exposed to wear are completely hardened to maintain accuracy and extend chuck life. Also available with through hole, for EDM machines, on demand.