21.5mm Rubber Flex Collet Holder For VTA7 Threading Attachment, Ø4–Ø7mm Compatible - Vertex

Take advantage of the combination of flexible rubber clamping, precise centring and compact dimensions for reliable thread cutting operations; order the collets directly via Metav Werkzeuge or consult the team for selection advice.

Rubber-Flex Collets FC for VTA7 Thread Cutting Attachment (Ø21.5 mm)

The Rubber-Flex Collets FC for VTA7 are flexible clamping inserts designed to secure small-diameter tool shanks in a thread cutting attachment for workshop and light industrial use.

• Flexible rubber clamping element for secure hold
• Designed for VTA7 thread cutting attachment
• Nominal diameter Ø21.5 mm for compact fixtures
• Suitable for shanks Ø4–Ø7 mm with fine centring

Reliable clamping for consistent thread cutting

The set of collets provides elastic clamping that adapts to minor shaft tolerances and reduces runout during threading. Built for use with the VTA7 thread cutting attachment, the inserts convert radial compliance into a stable grip, lowering the risk of chatter and premature tool wear. This behaviour benefits repetitive operations where consistent thread geometry is required and supports steady cycle times on manual and semi-automatic equipment.

Measured compatibility and performance benefits

With a nominal external diameter of Ø21.5 mm and a length of 13 mm, the collets present a compact interface that suits confined toolholders and short overhangs. The internal clamping range of Ø4–Ø7 mm accommodates common small shank sizes used in thread cutting. Caution: the elastic design compensates for minor dimensional variation but is not a substitute for properly ground tool shanks. The result is improved centring and reduced axial and radial deviation, which translates into more precise thread profiles and fewer scrap parts.

Durable operation and workflow advantages

Engineered for repeatable use in workshop environments, the Rubber-Flex inserts combine simple replacement with operational robustness. Their rubber-based clamping surface cushions the tool shank, decreasing point loads and minimising marring on delicate shafts. Stocking these collets alongside conventional rigid chucks can improve setup flexibility and shorten machine downtime. Metav’s logistics and quality control in Emmerich ensure dependable availability for production runs and maintenance cycles.

Choose the Vertex FC-20 Rubber-Flex collets for improved thread-cutting stability and ask Metav Werkzeuge for assistance with compatibility or ordering to ensure an optimal match for the tooling setup

Technical Data

• Article number: FC-20
• GTIN: 4061905094866
• Manufacturer: Vertex

Core dimensions

• External diameter: Ø21.5 mm
• Length: 13 mm
• Internal clamping range: Ø4–Ø7 mm

Compatibility & features

• Designed for thread cutting attachment VTA7
• Flexible rubber clamping inserts
• Category: clamping collet series FC

FAQ

How do the Rubber-Flex collets improve thread quality? The Rubber-Flex collets reduce runout through elastic clamping, improving the centring of the tool shank and resulting in more consistent thread profiles when used with the VTA7 attachment.

Which shank diameters are supported by these collets? The collets accept shanks in the Ø4–Ø7 mm range; the FC-20 design adapts to small tolerances within that span to maintain grip and precision.

Are these collets compatible with other thread cutting systems? They are specifically designed for the VTA7 thread cutting attachment; alternative systems may require different collet geometries or adaptors to ensure proper seating and clamping.

What maintenance is required to keep performance stable? Periodic inspection for wear of the rubber surface and cleaning of the collet bore preserves clamping performance; replacement is advised when deformation or hardening is observed.

Is the FC-20 suitable for high-speed threading operations? The elastic clamping improves stability for typical threading speeds used with VTA7; for high-speed or heavy-duty machining, selection should be validated against the specific tooling and spindle conditions.

Manufacturer: Vertex Machinery Works Co., Ltd.; No. 296, Sec. 1, Feng Shih Road, Fengyuan District, Taichung City 420, Taiwan