4.5mm ER16 Collet With 3.4mm Square Drive For Thread Cutting, 15µm Runout - TECWERK

Taking advantage of the combination of proven runout control and DIN‑compliant design ensures reliable thread cutting and consistent tool performance; order the collet directly via Metav Werkzeuge or ask our consultants for application advice.

TECWERK ER16-GB collet — 4.5 mm clamping diameter, 3.4 mm internal square

The TECWERK ER16-GB collet is a precision ER collet designed for thread cutting and general clamping tasks in ER chucks, offering controlled runout and secure tool engagement.

• ER-GB design to DIN 6499 compliant
• Internal 3.4 mm square for thread cutting
• Runout accuracy 15 µm for consistent finishes
• Compact dimensions: L 27.5 mm, ø 4.5 mm

High precision where it matters

The ER16‑GB variant delivers measurable benefits for workshop and production environments that require repeatable results. Built to DIN 6499, the design provides a standardised interface that helps maintain consistent concentricity when used in ER chucks and thread‑cutting collet holders. The specified runout accuracy of 15 µm means reduced vibration and improved surface quality on threaded parts; for operators this translates into fewer rejects and longer tool life. In practice, a low runout figure limits radial play, which is crucial when forming or cutting threads to tight tolerances.

Built for thread cutting and robust clamping

A defining feature is the internal square (3.4 mm) that accepts threading tools or allows positive engagement during thread cutting operations. This internal profile, combined with a clamping diameter of 4.5 mm, secures small shank tools reliably while maintaining accessibility for coolant and chips. The compact length of 27.5 mm keeps the tool assembly short, reducing overhang and improving stiffness. For those less familiar with collet terminology: the internal square is simply a fixed polygonal bore that prevents tool rotation and ensures repeatable axial positioning during cutting tasks.

Integrating into workshop tool sets with confidence

Compatibility with standard ER tooling simplifies inventory and changeover: the collet mates with ER type chucks and thread‑cutting collet holders without adaptation. Its ER‑GB designation denotes the specialised geometry for thread operations while preserving the general clamping characteristics of ER systems. The single‑piece supply unit makes planning straightforward and minimises logistical overhead. If there is any uncertainty about fitment or application in a specific machine, the supplier network can advise on bedding‑in procedures and suitable holders to achieve the best runout and holding performance.

Contact Metav Werkzeuge for tailored application advice and to request the TECWERK ER16-GB collet – info@metav-werkzeuge.com | +49 2822 7131930

Technical Data

• Article number: 2000834956NW
• Product type: ER 16-GB
• Description: Spannzange ER16-GB Spann‑D.4,5mm 4‑KT.3,4mm TECWERK
• Manufacturer: TECWERK
• Pack unit: 1
• UID: 2000834956NW

Facts

• Clamping range: 4.5 mm
• Internal square: 3.4 mm
• Length: 27.5 mm
• Diameter: 4.5 mm
• Runout accuracy: 15 µm
• Type: ER‑GB

Special features

• Conforms to DIN 6499
• Internal square for thread cutting applications
• Compatible with ER collet chucks and thread‑cutting collet holders
• Compact design for reduced overhang

FAQ

What is the clamping range of this collet?
The clamping range is 4.5 mm as specified for the TECWERK ER16-GB collet (SKU 2000834956NW).

Is the collet suitable for thread cutting?
Yes, the collet features an internal square (3.4 mm) specifically intended to support thread cutting operations and positive tool engagement.

How precise is the runout of this collet?
The runout accuracy is 15 µm, which supports consistent surface finish and repeatable thread geometry in production settings.

Will this fit standard ER chucks?
The ER16‑GB design is compatible with standard ER chucks and thread‑cutting collet holders designed for ER systems.

What are the main dimensions to check for tooling compatibility?
Key dimensions are length 27.5 mm, clamping diameter 4.5 mm and internal square 3.4 mm; these determine fit and clearance in the tool assembly.

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