2.5mm ER11 Collet 18mm Length 5 µm Runout, Nomin. Minus 0.5mm Clamping Range - TECWERK

Take advantage of precise clamping, DIN-compliant manufacture and compact length for consistent tool performance across jobs; the collet secures tools along their full clamping length and tolerates chamfer-mounted bits while maintaining a 5 µm runout. Order the collet directly via Metav Werkzeuge or ask our consultants if needed.

Collet Type ER 11/4008 E — ER 11 collet with 2.5 mm clamping diameter, TECWERK

Collet Type ER 11/4008 E is a compact ER 11 clamping sleeve designed for general workshop and light industrial use, offering reliable concentricity and compatibility with standard ER collet chucks for milling and drilling operations.

• Compliant with DIN 6499-B
• Fits ER collet chucks type ER
• Runout and repeatability 5 µm
• Clamping diameter: nominal −0.5 mm

Accurate clamping for consistent machining results

The compact collet delivers reliable concentricity by holding tools along the entire clamping length, which reduces vibration and improves surface finish. The specified runout and repeatability of 5 µm provides a measurable advantage when repeatable hole positions or precise milling paths are required. Because the clamping sleeve permits seating on the lead chamfer, short shank tools and countersunk bits can be secured without special adapters, improving process reliability in short-cycle production and prototyping.

Seamless compatibility with ER systems and quick tool changes

Designed to meet DIN 6499-B, the sleeve integrates with standard ER collet chucks, eliminating the need for intermediate sizes and simplifying inventory management. The nominal-to-clamped compensation of −0.5 mm allows predictable clamping behaviour for a 2.5 mm nominal diameter, while the small overall length (L: 18 mm) and outer diameter (11.5 mm) keep the assembly compact. This compatibility reduces setup time and supports efficient tool changes in a busy workshop environment.

Practical benefits for workshop and maintenance applications

Made to suit everyday machining tasks, the collet balances compactness with grip performance to improve operator confidence during repetitive operations. The small clamping diameter (2.5 mm) is ideal for fine drilling, small-end milling and finishing passes, where tool runout directly affects part quality. Clear technical conformity and predictable performance contribute to process optimisation, especially when combined with Metav Werkzeuge’s product range and logistical support from Emmerich.

Contact Metav Werkzeuge for tailored clamping advice and availability — eMail: info@metav-werkzeuge.com · Tel: +49 2822 7131930

Technical Data

• Article number: 2000832851NW
• SKU: 2000832851NW
• Product type: ER 11 collet
• Brand: TECWERK
• Packaging unit: 1

Numbers / Core technical data

• Clamping diameter nominal: 2.5 mm
• Outer diameter D: 11.5 mm
• Length L: 18 mm
• Runout / repeatability: 5 µm
• Clamping diameter compensation: nominal −0.5 mm

Special features / Versions

• Compliant with DIN 6499-B
• Suitable for ER collet chucks type ER
• Tools held along full clamping length
• Can be clamped on the lead chamfer
• No intermediate sizes required

FAQ

What materials and tool types can be clamped with this collet?
The Collet Type ER 11/4008 E from TECWERK is intended for typical small-diameter tools such as drills and end mills; material-specific suitability depends on the tool material rather than the collet itself.

How precise is the clamping accuracy of the ER 11/4008 E?
The collet provides a runout and repeatability of 5 µm, ensuring consistent concentricity for fine machining tasks when used with a compatible ER collet chuck.

Can short-shank tools be secured with this collet?
Yes, the design allows tools to be clamped along the full clamping length and it is possible to clamp on the lead chamfer, which helps secure shorter tool shanks without additional adapters.

Is the ER 11/4008 E compatible with standard ER chucks?
The collet is manufactured to comply with DIN 6499-B and is compatible with standard ER collet chucks of the corresponding size.

What is the clamping range and compensation for the 2.5 mm nominal size?
For the nominal 2.5 mm clamping diameter, the clamping diameter compensation is nominal −0.5 mm, providing predictable clamping behaviour.

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