JKP High Precision Keyless Drill Chuck 1/64"-5/16" with J1 Taper

The Self-Tightening High Precision Keyless Drill Chuck features a capacity of up to 5/8" and a maximum runout of 0.0016". The self-tightening mechanism automatically increases clamping forces in proportion to the torque increase during drilling, preventing tool slippage in clockwise rotation. This chuck is designed for right-hand rotation applications and is suitable for use on high-accuracy drill presses, jig borers, milling machines, and production drilling equipment. Chucks mount to the machine with standard Jacobs tapers. All wear-exposed components are fully hardened to maintain accuracy and extend the chuck's lifespan. The JKP series is hand tightened only, see the JKT series if you require supplemental tightening.