Jaw-Type Diaphragm Chuck
Uses a diaphragm mechanism to drive the jaws elastically, helping improve repeatability in suitable finishing operations.
Elastic precision clamping for thin-wall parts, easily marked surfaces and repeat finishing operations.
Diaphragm Chucks
KORRETTO diaphragm chucks use elastic diaphragm deformation to provide controlled clamping and release. They are suitable for thin-wall parts, easily marked workpieces and precision finishing operations where repeatability and low deformation are important. This category includes jaw-type diaphragm chucks, fixed diaphragm chucks, diaphragm collets and rear-actuated passive diaphragm chucks.
Fixed Diaphragm Chuck
Used when the diaphragm clamping unit is installed as a fixed solution for repeated workholding.
Diaphragm Collet
Used as a diaphragm-style clamping component where elastic repeatable clamping is required.
Rear-Actuated Passive Diaphragm Chuck
Rear actuation keeps the front area more compact and can be selected when front-end space is limited.
How to Select a Diaphragm Chuck
- Confirm the part sensitivity
Diaphragm chucks are suitable for parts that deform easily, mark easily or require repeatable finishing clamping. - Identify the clamping structure
Choose jaw-type, fixed, diaphragm collet or rear-actuated passive structures according to the machine layout and workpiece contact surface. - Check required repeatability
Diaphragm chucks are often selected for finishing operations where repeatability matters more than heavy roughing force. - Review workpiece wall thickness and contact area
Thin-wall parts need careful control of contact surface, clamping force and support location. - Compare with rubber flex collets
Rubber flex collets provide flexible surrounding contact. Diaphragm chucks provide elastic precision clamping through diaphragm deformation. The better option depends on the part and process.
Quick Selection Table
| Requirement | Start with |
|---|---|
| Precision external clamping with elastic jaw motion | Jaw-Type Diaphragm Chuck |
| Fixed-station repeat clamping | Fixed Diaphragm Chuck |
| Diaphragm-style collet component | Diaphragm Collet |
| Compact front area or rear actuation | Rear-Actuated Passive Diaphragm Chuck |
| Thin-wall or easily marked workpiece | Diaphragm Chucks / Rubber-Flex Collets |
| Heavy roughing | Hydraulic Chuck or another stronger workholding option |
FAQ
What is a diaphragm chuck?
A diaphragm chuck uses elastic diaphragm deformation to clamp and release the workpiece. It is often used for precision finishing and repeatable low-deformation clamping.
Are diaphragm chucks and membrane chucks the same product type?
In many workholding discussions, membrane chuck is used to describe the same general elastic clamping product type. KORRETTO uses diaphragm chuck for these precision elastic clamping products, and the exact structure should be selected from the workpiece drawing, clamping surface and machine layout.
What parts are suitable for diaphragm chucks?
Thin-wall parts, easily marked workpieces and parts requiring repeatable finishing clamping are typical candidates.
What is the difference between a diaphragm chuck and a rubber flex collet?
A diaphragm chuck clamps through elastic diaphragm deformation. A rubber flex collet uses segmented metal and rubber connection to provide flexible surrounding contact. The better choice depends on deformation risk, contact surface and accuracy requirement.
What is a rear-actuated passive diaphragm chuck?
It is a diaphragm chuck actuated from the rear side, allowing the front clamping area to remain compact for certain machine or fixture layouts.
What information should I provide for selection?
Send the workpiece drawing, material, wall thickness, clamping surface, required repeatability, spindle nose or fixture interface and machining process.