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A three-jaw chuck is a fundamental clamping device widely used in lathes and rotary machinery. It features three symmetrically arranged jaws that move simultaneously through a scroll mechanism to securely center and hold cylindrical or hexagonal workpieces with high concentricity. Typically self-centering, it ensures efficient and repeatable positioning for machining operations such as turning, drilling, or milling. Made from durable materials like hardened steel, three-jaw chucks are valued for their ease of use, quick setup, and reliable grip, making them essential in metalworking, woodworking, and manufacturing workshops where precision and productivity are required.
Three jaws move synchronously via internal worm gear, ensuring precise workpiece centering without manual adjustment.
Jaws with anti-slip serrations grip workpieces tightly, resisting cutting forces and centrifugal force during machining.
Adapts to symmetric parts (round, hexagonal) and fits various sizes by replacing or adjusting soft/hard jaws.
| Materials | Iron-based |
| Density | >6.95g/cm³ |
| Thickness | 13.1~13.4mm |
| Inner Diameter | |
| Maximum Outer Diameter | |
| Application | Automobile–Steering System |
| Process | PM |
| Sintering Conditions | 1120±10℃ |
| Hardness | ≥32HRC |
| Weight | 47.1g |
