Heavy Duty Taper Mounted Plain Bearing Chuck For 3JT Mount Five Eighths Inch Maximum Capacity K3 Key Included Center Ground Jaws For Absolute Straightness Through Hardened Teeth And Hardened Nose For Superior Wear Resistance
✔️ 3JT mount, through-hardened sleeve, single-chuck precision
This heavy-duty taper-mounted chuck is designed for 3JT spindles and uses a plain bearing for smooth, low-friction operation. It’s built for precise holding of drills and small tooling on lathes and milling machines, with center-ground jaws to ensure straightness.
✅ Jaws center-ground for absolute straightness and alignment
✅ One-piece sleeve eliminates cracks between driving teeth
✅ Through-hardened sleeve teeth, hardened nose and keyholes for wear resistance
✅ TIR 0.004 in maximum at half capacity
✅ Closed length 3-11/16 in, open length 2-7/8 in; sleeve diameter 2-19/64 in
✅ 3JT taper mount; single chuck, heavy duty construction
💡 What is a 3JT taper chuck used for in precision milling and turning? The 3JT taper chuck securely holds small tooling in turning and milling setups with high concentricity and repeatable gripping force. - 3JT compatibility for compact tooling in machines - center-ground jaws improve straightness and alignment - through-hardened components reduce wear over time - maintains low runout and stable gripping under load
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