Manual 4-jaw independent chuck for irregular and offset workpiece setup.
4-Jaw Independent Chuck
KORRETTO 4-Jaw Independent Chuck is a manual lathe chuck with four independently adjustable jaws. It is used when the workpiece requires individual jaw setting, offset adjustment or holding of non-round shapes.
Product Overview
The 4-jaw independent chuck allows each jaw to be adjusted separately. This makes it suitable for square parts, rectangular parts, castings, forgings, eccentric workpieces and setups where self-centering movement is not enough.
Selection should confirm chuck size, mounting interface, jaw travel, workpiece shape, clamping range, required setup accuracy and machine compatibility.
Key Features
| Feature | Description |
|---|---|
| Four independent jaws | Each jaw can be adjusted separately for flexible positioning. |
| Suitable for irregular workpieces | Useful for square, rectangular, cast and eccentric parts. |
| Manual adjustment control | Allows setup where synchronized jaw movement is not suitable. |
| Offset setup capability | Supports controlled offset positioning when the process allows it. |
| Separate from self-centering chucks | Selected when individual jaw control is required. |
Typical Applications
- Square and rectangular workpieces
- Irregular castings and forgings
- Offset turning setups
- Non-round workpiece holding
- Manual lathe setup work
- Workpieces requiring individual jaw positioning
Technical Data and Dimensions
Use the drawing and parameter table to check chuck size, mounting dimensions, jaw travel, net weight and machine compatibility.
| Size (mm) | Size (inch) | D1 | D2 | D3 | H | H1 | h | z-d | Net Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 80 | 3 | 55 | 66 | 22 | 56 | 42 | 3.5 | 4-M6 | 2.0 |
| 100 | 4 | 72 | 84 | 25 | 73 | 54 | 3.5 | 4-M8 | 2.9 |
| 125 | 5 | 95 | 108 | 30 | 78 | 56 | 4.5 | 4-M8 | 4.7 |
| 160 | 6 | 130 | 145 | 40 | 96.5 | 65 | 5 | 4-M10 | 7.7 |
| 200 | 8 | 125 | 104.8 | 50 | 110 | 75 | 6 | 4-M10 | 15.1 |
| 250 | 10 | 100 | 120 | 65 | 117.5 | 82 | 6 | 4-M12 | 21.3 |
| 320 | 13 | 140 | 165 | 95 | 134 | 90 | 6 | 4-M16 | 39.6 |
| 400 | 16 | 160 | 185 | 125 | 143 | 95 | 8 | 4-M16 | 53.9 |
| 500 | 20 | 200 | 236 | 160 | 161 | 106 | 8 | 4-M20 | 91.3 |
| 630 | 25 | 220 | 258 | 180 | 180 | 115 | 10 | 4-M20 | 146.5 |
| 800 | 32 | 250 | 300 | 210 | 210 | 135 | 12 | 8-M20 | 252 |
| 1000K | 40 | 320 | 370 | 305 | 236 | 145 | 15 | 8-M20 | 395 |
| 1250 | 50 | 400 | 500 | 305 | 251 | 160 | 15 | 8-M20 | 585 |
| 2000 | 80 | 450 | 560 | 350 | 290 | 190 | 20 | 8-M30 | 2310 |
Related Manual Chuck Pages
FAQ
What is a 4-jaw independent chuck used for?
It is used for workpieces that require individual jaw adjustment, such as irregular, square, rectangular or offset parts.
Is this the same as a 4-jaw self-centering chuck?
No. A 4-jaw independent chuck has separately adjustable jaws. A self-centering chuck moves the jaws together.
When should I choose an independent chuck?
Choose it when the workpiece cannot be located properly by synchronized jaw movement or requires offset adjustment.
Can it hold round workpieces?
Yes, but it is mainly selected when individual jaw setting is needed. For regular round workpieces, a self-centering chuck may be faster.
What should be checked before ordering?
Check chuck size, mounting interface, workpiece shape, clamping range, jaw travel and required setup accuracy.
Is this a hydraulic or pneumatic chuck?
No. This is a manual independent chuck. Power chucks are selected separately.