11mm ER 25-GB Collet With 9mm Internal Square For Thread Cutting, 15 µm Runout - TECWERK

Benefit from precise runout control and integrated tapping capability: the collet’s 15 µm runout accuracy, internal 9 mm square for thread cutting and an 11 mm clamping diameter ensure consistent process quality and reduced rework; order or request advice via Metav Werkzeuge for quick delivery and technical clarification.

TECWERK ER-GB Collet – 11 mm clamping diameter, 9 mm internal square

A TECWERK ER-GB collet for ER-type collet chucks, designed to support thread cutting with its internal square and to provide high concentricity in light- to medium-duty production environments.

• Compliant with DIN 6499
• Internal square for tapping
• Runout accuracy 15 µm
• L 40 mm, clamping d 11 mm

Accuracy that safeguards thread quality

The primary advantage of this clamping sleeve is its runout accuracy, specified at 15 µm, which noticeably reduces concentricity-related defects during threading and light milling. Compliance with DIN 6499 confirms the geometric tolerances that are expected in professional production and workshop contexts, so the component seated in the chuck stays centred. Fewer rejects and less rework follow from stable clamping concentricity, improving overall process reliability without complex setup changes.

Secure clamping and clear dimensional data

Built with an 11 mm clamping diameter, an internal 9 mm square for tapping spindles and a nominal length of 40 mm, this collet fits standard ER-type systems and supports thread cutting operations directly from the chuck. The internal square converts the clamping sleeve into a short tapping aid, eliminating an extra tool change for many tapping tasks. Clear dimensional conformity simplifies tool selection and integration into existing collet chucks, enhancing machine uptime and throughput.

Practical benefits for the workshop and small production

Integration of a GB-style collet into an ER collet system streamlines workflows: fewer tool changes, consistent clamping, and proven compatibility with ER chucks. The mechanical design focuses on stable grip for short-run production and service jobs where accurate threads are required. Combined with Metav’s logistics and technical support, procurement and replacement are straightforward, supporting continuous operation and dependable results on the shop floor.

Contact Metav Werkzeuge in Emmerich for procurement or technical guidance on integrating this TECWERK ER-GB collet into existing toolholding systems

Technical Data

• Article number: 2000834975NW
• Manufacturer: TECWERK
• Product type: Collet GB
• Product designation: ER-GB collet

Facts

• Clamping diameter: 11 mm
• Runout accuracy: 15 µm
• Length: 40 mm
• Internal square: 9 mm
• Packaging unit: 1

Special features

• DIN 6499 compliant
• Internal square for tapping / thread cutting
• Suitable for ER-type collet chucks
• Designed for secure clamping and concentricity

FAQ

What materials and operations is this collet intended for?
The TECWERK ER-GB collet is specified for general-purpose clamping and is particularly intended to support thread cutting via its built-in 9 mm internal square, as described in the product data.

Is the runout specification critical for precision threads?
Yes; the stated 15 µm runout accuracy of the collet significantly improves concentricity during threading, reducing the risk of misaligned threads and rework.

Will this collet fit existing ER-type chucks?
The sleeve is designed for ER-type collet chucks and follows DIN-guided dimensions, so it integrates with standard ER holders used in workshops and small production machines.

How does the internal square benefit tapping operations?
The internal square permits a direct drive for tapping tools or adaptors, reducing tool changes and simplifying the setup for thread cutting tasks in short to medium production runs.

Can this collet be used as a universal replacement for worn collets?
The collet can replace worn GB-style ER collets where the dimensional match is identical; check the 11 mm clamping diameter and 40 mm length against existing tooling before installation.

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