4mm ER Collet Type ER11/4008 E Clamping Diameter 4mm, L18mm - TECWERK

Take advantage of precise clamping, excellent runout control and straightforward compatibility with ER chucks for reliable machining results; order directly via Metav Werkzeuge or consult our specialists for application advice.

ER 11 collet 4008 E — 4 mm clamping diameter, 18 mm length (TECWERK)

The ER 11 collet 4008 E is a precision clamping sleeve for ER 11 toolholders, designed to hold 4 mm shank tools securely and to maintain concentricity during milling and drilling operations.

• Conforms to DIN 6499‑B
• Compatible with ER collet chucks
• Full‑length clamping for secure hold
• Runout and repeatability ≤ 5 µm

Precision clamping for consistent tool performance

The collet is manufactured to the DIN 6499‑B specification, delivering consistent concentricity and a documented runout of ≤ 5 µm, which directly improves surface finish and tool life. Because the sleeve achieves full‑length clamping, the cutter is supported along its shank rather than at a single point, reducing vibration and minimising tool deflection. The specified clamping diameter overbridge (nominal − 0.5 mm) allows a defined range of shank tolerances to be accommodated without intermediate adaptors, so repeatable results are achieved across batch runs and setup changes.

Practical compatibility and easy handling in the workshop

Designed for the ER system, the sleeve fits standard ER 11 collet chucks and accepts a 4 mm clamping diameter for common small‑tool applications. The compact dimensions — d 4 mm, L 18 mm, D 11.5 mm — make it suitable for confined toolholders and compact spindle arrangements. Tools can be clamped on the guide chamfer where required, and because no intermediate sizes are necessary, changeover is straightforward. This compatibility simplifies inventory management and speeds up tool changes in busy production environments.

Process reliability that supports productivity

Holding the cutting tool over the entire clamping length reduces the risk of slippage under load and improves repeatability between setups. The combination of secure axial and radial support lowers scrap rates and contributes to predictable machining outcomes. For operations where consistent concentricity and minimal runout are critical, the design reduces rework and supports higher feeding rates while retaining dimensional accuracy. The ER 11 collet’s measured tolerances translate into dependable performance for series work and precision tasks.

For high‑precision clamping solutions from TECWERK, contact Metav Werkzeuge for tailored advice and to secure the ER 11 collet 4008 E through our supply channels

Technical Data

• Article number: 2000832858NW
• Type: ER 11
• Product: ER collet
• Brand: TECWERK

Numbers

• Clamping diameter: 4 mm
• Length L: 18 mm
• Outer diameter D: 11.5 mm
• Runout / repeatability: ≤ 5 µm
• Clamping diameter overbridge: nominal − 0.5 mm

Special features

• Conforms to DIN 6499‑B
• Fits ER collet chucks (ER 11)
• Full‑length clamping for secure hold
• Can be clamped on the guide chamfer
• No intermediate sizes required

FAQ

What chuck type does this collet fit?
The sleeve is designed for ER 11 collet chucks and matches the dimensions typical of that system for direct mounting.

What clamping diameter does this collet support?
This collet provides a clamping diameter of 4 mm, suitable for 4 mm shank tools.

How accurate is the concentricity when clamped?
Runout and repeatability are specified at ≤ 5 µm, delivering high concentricity for precision tasks.

Can the tool be clamped on the guide chamfer?
Yes, the design allows the tool to be clamped on the guide chamfer and still achieve secure, full‑length support.

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