11mm ER 16-GB Collet With 9mm Internal Square For Thread Cutting, 15 µm Runout - TECWERK

High concentricity and an integrated internal square ensure reliable thread‑cutting and consistent tool life, while a compact 34 mm length and 11 mm clamping bore guarantee compatibility with standard ER collet chucks; order the collet directly via Metav Werkzeuge or request advice from our technical consultants.

ER25-GB collet — 11 mm clamping diameter, 9 mm internal square (TECWERK)

The ER25-GB collet is a DIN 6499‑compatible clamping sleeve with an internal square for secure thread cutting, designed for use in ER collet chucks to deliver repeatable concentricity and reliable tool holding.

• DIN 6499 compatible ER‑GB design
• Internal square 9 mm for thread cutting
• Clamping diameter 11 mm
• Runout accuracy 15 µm for precision

Consistent concentricity for repeatable production

High concentricity is central to precision machining. The clamping sleeve delivers runout accuracy 15 µm, which reduces wobble and vibration during rotation; this leads to improved surface finish, lower scrap rates and longer tool life. For workshops and small production runs, this level of concentricity means fewer set‑up checks and more predictable process windows. The result is measurable process stability and less unexpected downtime.

Secure threading and torque transfer for tapping operations

An internal square 9 mm provides a positive drive when thread cutting or tapping, avoiding slippage that can damage tools and workpieces. The design follows DIN 6499, ensuring the collet mates correctly with ER‑style chucks and tap holders. Because the square is integrated rather than an adapter, torque transfer is direct and efficient, which is especially beneficial when working with materials that demand consistent thread form or when using shorter tapping cycles.

Compact dimensions that simplify tool management

With a compact profile (L 34 mm) and an 11 mm clamping diameter, the sleeve is sized for common ER25 toolholding systems, allowing straightforward replacement without altering existing setups. The modest overall length helps maintain clearance in fixtures and reduces the need for length offsets in CNC programmes. As a standardised clamping component, the collet supports rapid changeovers and reduces the variety of spares required in a workshop environment.

For reliable thread‑cutting and precise clamping, contact Metav Werkzeuge to specify the TECWERK ER25-GB collet and request application guidance from our technical team via info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 2000834967NW
• Brand: TECWERK
• Product type: Collet GB

Facts

• Clamping diameter: 11 mm
• Internal square: 9 mm
• Length: 34 mm
• Runout accuracy: 15 µm

Special features

• DIN 6499 compatible ER‑GB design
• Internal square for thread cutting
• Suitable for ER collet chucks
• Packaging unit: 1

FAQ

What materials is the ER25-GB collet suitable for?
The ER25-GB collet (TECWERK, Article No. 2000834967NW) is designed as a general‑purpose clamping sleeve for ER tooling systems; material suitability depends on the cutting tool and machining parameters rather than the collet itself.

How does the internal square help with thread cutting?
The internal square 9 mm transfers torque directly from the holder to the tap, reducing slippage; the ER25-GB collet therefore supports reliable thread formation under typical tapping loads.

What level of concentricity can be expected in production?
The collet achieves a runout accuracy of 15 µm, which supports consistent concentricity for many precision turning and drilling operations and helps to reduce rework.

Is the collet compatible with standard ER chucks?
Yes — the component follows DIN 6499 dimensions for ER‑GB design, ensuring fitment in standard ER collet chucks and simplifying integration into existing toolholding systems.

Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund