Manual precision adjustable chuck for fine centering and runout correction.
Precision Adjustable Chuck
KORRETTO Precision Adjustable Chuck is designed for manual lathe workholding where fine centering correction and runout adjustment are required. As a manual scroll chuck with adjustment capability, it helps match the chuck setup to precision machining requirements.

Product Overview
The precision adjustable chuck is selected when a standard manual chuck cannot meet the required centering correction or runout control. It combines manual self-centering chuck operation with an adjustable structure for fine alignment.
Selection should confirm chuck size, mounting interface, adjustment method, workpiece accuracy requirement, clamping range and machine compatibility.
Key Features
| Feature | Description |
|---|---|
| Precision adjustment capability | Supports fine centering correction during setup. |
| Manual scroll chuck structure | Suitable for self-centering manual chuck applications with additional adjustment. |
| Runout control support | Used when workpiece setup requires better centering correction than a standard chuck. |
| Manual lathe operation | Suitable for conventional turning and precision setup work. |
| Different from ordinary manual chucks | Selected when adjustable alignment is required. |
| Separate from power chucks | Hydraulic and pneumatic chucks are selected separately. |
Typical Applications
- Precision turning setup
- Workpieces requiring fine centering correction
- Manual lathe workholding
- Runout-sensitive clamping work
- Replacement or matching for precision manual chuck setups
- Workpieces requiring adjustable alignment before machining
Technical Data and Dimensions
Use the drawing and parameter table to check chuck size, mounting dimensions, adjustment-related dimensions, clamping range and machine compatibility.

| Size | D | D1 | D2 | D3 | H | H1 | H2 | h | z-d | Maximum Speed | Net Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| KM31125(5")A(DG) | 125 | 55 | 108 | 35 | 100 | 60 | 64.8 | 15 | 3-M8 | 5500 | 6 |
| KM31160(6")A(DG) | 160 | 86 | 140 | 42 | 114.4 | 71 | 76 | 18 | 3-M10 | 4600 | 10 |
| KM33160(6")A(DG) | 160 | 86 | 140 | 42 | 114.4 | 71 | 76 | 18 | 3-M10 | 3200 | 11 |
| KM33160(8")A(DG) | 200 | 110 | 176 | 55 | 125.5 | 80.5 | 85.3 | 20 | 3-M10 | 4000 | 20 |
| KM33200(8")A(DG) | 200 | 110 | 176 | 55 | 125.5 | 80.5 | 85.3 | 20 | 3-M10 | 2800 | 21 |
| KM31250(10")A(DG) | 250 | 145 | 224 | 76 | 117.5 | 94.5 | 99.3 | 20 | 3-M12 | 3500 | 31 |
| KM33250(10")A(DG) | 250 | 145 | 224 | 76 | 117.5 | 94.5 | 99.3 | 20 | 3-M12 | 2400 | 33 |
| KM31315(12")A(DG) | 315 | 180 | 286 | 103 | 151.4 | 94.5 | 99.5 | 20 | 3-M16 | 2800 | 53 |
| KM33315(12")A(DG) | 315 | 180 | 286 | 103 | 151.4 | 94.5 | 99.5 | 20 | 3-M16 | 2400 | 55 |
Related Manual Chuck Pages
FAQ
What is a precision adjustable chuck used for?
It is used when manual chuck setup requires fine centering correction or better runout control.
Is this also a scroll chuck?
Yes. It can be described as a manual scroll chuck when the self-centering scroll mechanism is used together with an adjustment structure.
How is it different from a standard manual chuck?
A standard manual chuck provides normal clamping and centering. A precision adjustable chuck adds adjustment capability for fine alignment.
Is this a hydraulic or pneumatic chuck?
No. This is a manual chuck. Hydraulic and pneumatic chucks are separate product lines.
What should be checked before ordering?
Check chuck size, mounting interface, adjustment requirement, workpiece accuracy requirement, clamping range and machine compatibility.
Can it correct every runout problem?
No. It supports setup adjustment, but final runout also depends on machine condition, mounting accuracy, jaws, workpiece geometry and machining process.