3-Jaw Self-Centering Lathe Chuck 5-Inch, Reversible Jaws

5 inch self-centering 3 jaw lathe chuck delivers fast, repeatable workholding so you can clamp round stock accurately with minimal setup time. Built with an HT300 body, hardened 20Cr jaws, and a 40Cr scroll, it’s designed for consistent grip and stable turning. Reversible internal/external jaws expand the clamping range from small parts to larger workpieces, making it a practical upgrade for lathe, milling, drilling, and machining-center tasks.

• Delivers self-centering clamping for quicker setups and consistent alignment on round workpieces


• Includes reversible internal & external jaws to cover a wide 2.5–125 mm (0.1–5 in) clamping range


• Improves accuracy with precision gears and ≤0.05 mm bearing tolerance for repeatable machining


• Resists wear with HT300 body, 20Cr jaws (≥53 HRC) and 40Cr scroll (≥45 HRC), oil-coated finish


• Fits workshop workflows with T-key operation, fixing screws, and compact 3-jaw design

Designed for operators who want reliable concentric clamping without repeated calibration, this 3-jaw chuck supports everyday turning plus secondary operations like milling or drilling setups where stable holding matters. Install in the correct order, use the T-key to adjust, and switch jaw orientation to match your workpiece size and grip needs. Add it to your tooling lineup for smoother changeovers and more consistent results across small and large parts—grab yours today.

• Chuck type: 3-jaw self-centering


• Chuck outside diameter: 5 in / 125 ± 5 mm


• Clamping range (internal jaws): 2.5–40 mm / 0.098–1.57 in


• Clamping range (external jaws): 45–125 mm / 1.78–5 in


• Bore: φ30 mm


• Materials: HT300 body; 20Cr jaws; 40Cr scroll


• Hardness: jaws ≥53 HRC; scroll ≥45 HRC


• Bearing tolerance: ≤0.05 mm / 0.002 in


• Surface finish: Ra ≤0.8, oil coated


• Fixed thread: 3-M8


• Product size: φ125 × 135 mm


• Net weight: 10.8 lb / 4.9 kg