Rubber Flex Collet
The rubber-filled segmented structure provides elastic contact while helping reduce chip accumulation in the slots.
Flexible rubber collet workholding for thin-wall, sensitive and deformation-prone parts.
Rubber Flex Collets & Rubber Collet Chucks
KORRETTO rubber flex collets combine segmented metal bodies with vulcanized rubber to provide flexible, high-contact clamping. They are used for thin-wall parts, easily marked surfaces, short gripping lengths, internal expansion, external clamping and applications where chips should not collect easily in open slots. This category includes rubber flex collets, rubber collet chucks, internal expansion rubber collets, through-hole and blind-hole styles, inner-stop chucks, multi-spindle units and supporting tools.
Rubber Collet Chuck
Used with matching rubber flex collets when a complete chuck unit is needed for the machine.
High-Speed Pneumatic Rubber Collet Chuck
Suitable when flexible collet clamping and fast pneumatic actuation are required.
Blind-Hole Expanding Rubber Collet Chuck
Internal expansion rubber-flex chuck assembly for blind-hole and semi-through-hole workpieces where outside clamping is not suitable.
Rubber Flex Expanding Collet for Blind Holes
Used when the bore does not pass through the part and external clamping is not suitable.
Through-Hole Rubber Flex Expanding Collet
Suitable when the workpiece can be located and expanded from a through bore.
Through-Hole Rubber Flex Expanding Collet Chuck
Provides the machine-side holding unit for compatible through-hole rubber expanding collets.
Rubber Flex Collet Chuck with Inner Stop
The inner stop helps locate the workpiece during repeated clamping cycles.
Multi-Spindle Rubber Flex Collet Chuck
Used when multiple workpieces need to be clamped at the same time.
Rubber Flex Collet Bore Tool
Used to prepare the rubber flex collet bore to match the workpiece diameter.
Rubber Flex Collet Changeover Tool
Supports safer and more efficient collet replacement during setup changes.
How to Select Rubber Flex Collets
- Confirm whether the part is clamped externally or internally
External clamping uses rubber flex collets or rubber collet chucks. Internal location uses expanding rubber collets. - Check wall thickness and deformation risk
Rubber flex collets are often selected for thin-wall or easily deformed parts because they provide more surrounding contact than standard jaws. - Match bore or outside diameter
Provide the workpiece diameter, tolerance, wall thickness, gripping length and locating face so the collet or chuck can be matched correctly. - Choose blind-hole or through-hole internal expansion
Blind-hole and through-hole rubber expanding collets are not interchangeable without checking the workpiece bore and clamping length. - Confirm machine interface and actuation
Rubber collet chucks may use pneumatic, hydraulic or passive actuation depending on the product type and machine layout.
Quick Selection Table
| Requirement | Start with |
|---|---|
| External flexible clamping | Rubber Flex Collet / Rubber Collet Chuck |
| Thin-wall or easily marked workpiece | Rubber Flex Collet |
| Blind-hole internal expansion | Rubber Flex Expanding Collet for Blind Holes |
| Through-hole internal expansion | Through-Hole Rubber Flex Expanding Collet |
| Axial location during clamping | Rubber Flex Collet Chuck with Inner Stop |
| Multi-part clamping | Multi-Spindle Rubber Flex Collet Chuck |
| Bore preparation | Rubber Flex Collet Bore Tool |
| Faster collet replacement | Rubber Flex Collet Changeover Tool |
FAQ
What is a rubber flex collet used for?
A rubber flex collet is used for flexible clamping of parts that may deform, mark easily or require more surrounding contact than standard jaw clamping.
How is a rubber flex collet different from a standard metal collet?
A rubber flex collet uses segmented metal sections connected and sealed by vulcanized rubber. This provides elastic clamping and helps reduce chip accumulation in the slots.
Can rubber flex collets reduce thin-wall part deformation?
Yes, they can help distribute clamping contact more evenly, but the final result depends on wall thickness, material, gripping length, cutting force and setup.
What is the difference between external rubber collet clamping and internal expansion?
External clamping holds the outside diameter. Internal expansion locates and clamps from the bore. The workpiece drawing should be reviewed before choosing the method.
Are blind-hole and through-hole rubber expanding collets interchangeable?
Not usually. Blind-hole, through-hole and limited-depth bores require different clamping structures and should be checked separately.
What information is needed for rubber flex collet selection?
Provide the workpiece drawing, outside diameter, inside diameter, wall thickness, gripping length, locating surface, machine interface and target production volume.
Should I choose rubber flex collets or diaphragm chucks?
Rubber flex collets are useful for flexible surrounding contact and surface protection. Diaphragm chucks are often selected for high-repeatability elastic clamping in finishing operations.