Elastic diaphragm collet for precision clamping elements and diaphragm-style workholding.
Diaphragm Collet
KORRETTO diaphragm collet is an elastic clamping element used in diaphragm-style precision workholding. It supports controlled clamping contact and repeatable holding for suitable workpieces. This page covers the diaphragm collet itself, not a complete diaphragm chuck assembly and not the diaphragm chuck collection page.
Product Overview
The diaphragm collet is selected when the clamping element needs elastic movement and controlled contact with the workpiece. It may be used as part of a matched chuck or fixture system, depending on the machine interface and workpiece requirements.
Selection should confirm the workpiece diameter, clamping range, collet form, material, contact length, matching chuck structure, repeatability requirement and machining process.
Key Features
| Feature | Description |
|---|---|
| Diaphragm-style elastic element | Used as the clamping element in suitable diaphragm workholding systems. |
| Separate from chuck assemblies | This page covers the collet, not a complete diaphragm chuck. |
| Controlled workpiece contact | Suitable for precision clamping where repeatability and contact stability matter. |
| Application-specific matching | Must be matched with the correct chuck or fixture structure. |
| Useful for low-deformation clamping | Helps support parts that require gentle and repeatable holding. |
Typical Applications
- Precision diaphragm clamping elements
- Workpieces requiring controlled elastic contact
- Matched chuck or fixture systems
- Low-deformation finishing setups
- Repeat clamping applications
Technical Data and Dimensions
Use the drawing and parameter table to check collet size, clamping range, connection dimensions, contact form, compatible chuck structure and workpiece requirements.
| Parameter | JD-60 | JD-70 | JD-100 | JD-150 | ||||
|---|---|---|---|---|---|---|---|---|
| Type | External | Internal | External | Internal | External | Internal | External | Internal |
| ΦA (mm) | 65 | 70 | 75 | 80 | 105 | 110 | 155 | 160 |
| ΦB (mm) | 45 | 60 | 50 | 70 | 80 | 100 | 120 | 150 |
| C Clamping Range (mm) | 3–60 | 6–80 | 3–100 | 6–140 | 3–150 | 6–170 | 5–200 | 10–220 |
| ΦD (mm) | 52 | 52 | 60 | 60 | 90 | 90 | 135 | 135 |
| E (mm) | 20 | 20 | 22 | 22 | 29 | 29 | 35 | 35 |
| F (Mounting Hole) | 6-M4 CSK | 6-M4 CSK | 6-M5 CSK | 6-M5 CSK | 8-M5 CSK | 8-M5 CSK | 8-M6 CSK | 8-M6 CSK |
| Gripping Length | Custom length available on request | |||||||
Related Diaphragm Chuck Pages
FAQ
What is a diaphragm collet used for?
A diaphragm collet is used as an elastic clamping element in suitable precision workholding systems.
Is this the same as a diaphragm chuck?
No. A diaphragm chuck is a complete chuck assembly. This page covers the diaphragm collet itself.
When should I choose a diaphragm collet instead of a diaphragm chuck?
Choose a diaphragm collet when you need the elastic clamping element for a matched chuck or fixture system. Choose a diaphragm chuck when you need a complete chuck assembly.
What should be checked before selection?
Check workpiece diameter, clamping range, contact length, matching chuck structure, required repeatability and machining process.
Can this collet be used alone?
It normally needs to be matched with a suitable chuck, fixture or actuation structure. Compatibility must be confirmed before selection.
What information is needed?
Provide the workpiece drawing, clamping range, contact surface, matching chuck structure, machine interface and accuracy requirement.