3.5mm ER11 Collet Precision Clamping, 5 µm Runout, 18mm Length - TECWERK

Take advantage of the compact 18 mm length and high repeatability (≤ 5 µm) for stable clamping of 3.5 mm tools; compatible with standard ER 11 chucks and designed to hold tools over the full clamping length for improved rigidity — order via Metav Werkzeuge or consult the product specialists for integration advice.

TECWERK ER 11/4008 E collet (ER 11) – 3.5 mm clamping diameter

A TECWERK ER 11/4008 E collet engineered for precise, space-saving clamping of 3.5 mm shanks in ER 11 toolholders.

• High repeatability under 5 µm
• Full-length tool retention
• Compact length 18 mm
• Compatible with ER 11 chucks

Precision and runout control for repeatable production

The compact clamping sleeve is specified to deliver runout and repeatability of 5 µm, a figure that supports consistent tool performance across serial operations. The collet design follows DIN 6499‑B principles and is manufactured to bridge small diameter gaps: the clamping-diameter bridging is nominal minus 0.5 mm, allowing secure holding even when the shank is marginally undersized. Such characteristics reduce scrap rates and simplify quality control procedures, as concentricity is preserved during repeated tool changes.

Space savings and rigidity that improve machining results

With a total length of 18 mm and an outer diameter of 11.5 mm, the clamping sleeve is suitable for tight setups where tool overhang must be minimised. The geometry permits clamping on the leading chamfer as well as along the full clamping length, so the toolholder can achieve higher stiffness with shorter projections. Compatibility with standard ER 11 collet chucks ensures straightforward integration into existing assemblies, while the absence of required intermediate sizes simplifies tool inventory and changeover processes.

Practical advantages, process reliability and supply confidence

Constructed to retain tools along their entire clamping length, the component supports secure machining of standard shanks and contributes to predictable cycle times and less rework. The design emphasises operational ease — the sleeve can be seated and released in conventional ER 11 systems without special adapters — which helps maintain throughput in busy workshops. Backing from a reliable distributor in Emmerich adds logistical certainty, with rapid order processing and clear product traceability that align with professional procurement needs.

Contact Metav Werkzeuge for tailored integration guidance on TECWERK clamping systems or to discuss order and delivery options.

Technical Data

• Article number: 2000832857NW
• SKU: 2000832857NW
• Type: ER 11
• Label: Spannzange Typ ER 11/4008 E Spann‑D.3,5mm TECWERK
• Product type: Collet ER

Facts

• Clamping diameter: 3.5 mm
• Length (L): 18 mm
• Outer diameter (D): 11.5 mm
• Repeatability / runout: 5 µm
• Clamping‑diameter bridging: nominal minus 0.5 mm
• Packaging unit: 1

Special features

• Conforms to DIN 6499‑B
• Compatible with ER 11 collet chucks
• Holds tools along full clamping length
• Can be clamped on the lead chamfer
• Designed for standard 3.5 mm shanks

FAQ

What runout can be expected from this collet?
The TECWERK ER 11/4008 E collet is specified with a runout and repeatability of 5 µm, providing stable concentricity for precision machining.

Can this collet grip tools that are slightly undersized?
Yes, the clamping range allows a diameter bridging of nominal minus 0.5 mm, so minor undersizing can be compensated for without intermediate sleeves.

Is the sleeve compatible with standard ER 11 chucks?
The sleeve is designed for use with ER 11 collet chucks and seats correctly in standard ER 11 toolholders.

Can the tool be clamped on the chamfer with this collet?
The geometry permits clamping on the leading chamfer as well as along the full clamping length, enabling secure holding in varied setups.

What are the main dimensions to check for installation?
Key dimensions are clamping diameter 3.5 mm, length 18 mm and outer diameter 11.5 mm; verify these against the ER 11 holder specifications.

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