Three Jaw Self-Centering Lathe Chuck Manual Chuck K11 K12 K22 For CNC Machine

I. Basic Structure

It consists primarily of three parts:

1. Chuck Body: The main housing mounted onto the machine tool spindle.

2. Movable Jaws: Three in total, distributed evenly at 120° intervals; these are classified into forward jaws (for clamping external diameters) and reverse jaws (for clamping large diameters or expanding against internal bores).

3. Drive Mechanism: Internally contains a small bevel gear and a large bevel gear (featuring flat-spiral threads on its reverse side).

II. Key Features

• ✅ Self-Centering: Rapid clamping; eliminates the need for repeated alignment adjustments.

• ✅ Versatile Application: Suitable for symmetrical workpieces such as round bars, discs, shafts, tubes, hexagonal stock, and more.

• ✅ Precision: General-purpose centering accuracy ranges from approximately 0.05 to 0.15 mm.

• ✅ Power Type:

◦ Manual: Wrench-operated; suitable for small-batch production and repair work.

◦ Hydraulic/Pneumatic: Automated operation with high clamping force; suitable for mass production.

III. Main Applications

• General-purpose Lathes: Turning of external diameters, internal bores, end faces, and threads.

• Grinders: Grinding of shaft-type and sleeve-type parts.

• Milling Machines / Drilling Machines: Machining of symmetrical parts in conjunction with an indexing head.