Through-hole rubber-flex collet chuck for uniform outside clamping.
Through-Hole Rubber-Flex Collet Chuck
KORRETTO through-hole rubber-flex collet chuck is used for outside clamping of round, square, hex and profile workpieces. The rubber-flex collet provides continuous contact around the workpiece, helping reduce jaw marks, clamping deformation and runout variation compared with conventional jaw clamping. This page covers the through-hole external-clamping rubber-flex chuck, not the Rubber-Flex Collets collection page and not an internal-expansion mandrel page.
Product Overview
The through-hole rubber-flex collet chuck is selected when the workpiece can be clamped from the outside diameter and requires more uniform support than a standard jaw chuck. It is suitable for precision turning, grinding, finishing and repeated clamping of parts with stable outside dimensions.
Selection should confirm the workpiece shape, clamping diameter, workpiece tolerance, collet type, draw force, radial clamping force, maximum speed and machine spindle or fixture layout.
Key Features
| Feature | Description |
|---|---|
| Uniform outside clamping | Rubber-flex collet contact supports the workpiece around the clamping diameter. |
| Through-hole chuck structure | Suitable for workpieces and layouts requiring center clearance. |
| Reduced clamping marks | Helps reduce jaw marks compared with point-contact jaw clamping. |
| Shape compatibility | Can be selected for round, square, hex or special profile clamping ranges. |
| Precision workholding use | Suitable for repeated CNC clamping where consistency matters. |
Typical Applications
- Round shafts and sleeves
- Square and hex workpieces
- Thin-wall or mark-sensitive parts
- Precision turning and finishing
- Repeated CNC lathe clamping
- Workpieces requiring uniform outside support
Technical Data and Dimensions
Use the drawing and parameter tables to check chuck structure, collet stroke, maximum draw force, maximum radial clamping force, maximum clamping diameter, recommended workpiece tolerance and maximum speed.
| No. | Structure Name (Illustration) |
|---|---|
| 1 | Clamping Head (vulcanized segmented steel structure) |
| 2 | High-Precision Chuck Body |
| Specification | Stroke (mm) | Maximum Draw Force (kN) | Maximum Radial Clamping Force (kN) | Maximum Clamping Diameter (mm) | Recommended Workpiece Tolerance (mm) | Maximum Speed (r/min) |
|---|---|---|---|---|---|---|
| 32 | 2.5+3 | 25 | 70 | 32 | ±0.3 | 8000 |
| 42 | 2+2.5 | 35 | 80 | 42 | ±0.5 | 7000 |
| 52 | 2+2.5 | 35 | 80 | 52 | ±0.5 | 6000 |
| 65 | 2+2.5 | 50 | 90 | 65 | ±0.5 | 5000 |
Related Rubber-Flex Pages
FAQ
What is a through-hole rubber-flex collet chuck used for?
It is used for outside clamping of workpieces that need uniform support around the clamping diameter, such as shafts, sleeves and precision turned parts.
Is this the same as the Rubber-Flex Collets collection page?
No. This is a detail page for the through-hole external-clamping rubber-flex chuck. The collection page lists multiple rubber-flex collet and expanding collet solutions.
Is this an internal expansion mandrel?
No. This page covers outside clamping. Internal expansion rubber-flex products are handled separately under blind-hole or through-hole expanding collet pages.
What shapes can be clamped?
Depending on the collet specification, rubber-flex collets can be selected for round, square, hex or profile workpieces.
What information is needed for selection?
Provide the workpiece drawing, clamping diameter, shape, tolerance, material, clamping length, machine layout, draw force and required accuracy.
When should I choose this instead of a jaw chuck?
Choose it when the workpiece needs more uniform contact, lower marking risk or better repeat clamping than a conventional jaw chuck can provide.