3mm ER 25 Collet, 34mm Length, Clamping Range 3mm, 5 µm Runout - TECWERK

Precision and compatibility combine in this TECWERK ER 25 collet: full‑length clamping and a 5 µm runout rating ensure steady, reproducible toolholding for small‑diameter tooling. Benefit from DIN 6499‑B conformity and the ability to bridge undersized tools (nominal −1.0 mm). Order the collet directly via Metav Werkzeuge or ask the consultants for tailored advice.

ER 25 Collet 430 E – 3 mm clamping diameter (TECWERK)

The ER 25 Collet 430 E is a DIN‑compliant collet designed for ER‑type holders, providing secure, full‑length clamping of 3 mm tools for precision machining applications.

• DIN 6499-B compatibility
• Full-length clamping for secure grip
• Runout and repeatability: 5 µm
• Clamping diameter 3 mm, length 34 mm

Consistent precision for demanding toolholding

Designed to meet DIN 6499‑B, this collet delivers repeatable runout of 5 µm, which translates into more accurate cuts and improved surface finishes. The full‑length clamping mechanism grips the tool along its entire clamping length and also accepts bracing on the leading chamfer, reducing axial play and vibration. For production runs where consistency matters, the technical specification—d = 3 mm, L = 34 mm, D = 26 mm—supports predictable performance and helps maintain tool life by limiting undesired deflection.

Faster setups and stable production processes

Compatibility with standard ER chucks eliminates the need for intermediate sizes and simplifies tooling changes, so set‑up times are reduced and throughput increases. The collet’s ability to bridge smaller diameters (clamping range: nominal −1.0 mm) allows secure gripping of slightly undersized tools without additional adapters. This functional flexibility supports leaner inventories of clamping accessories and fewer interruptions on the shopfloor, delivering a measurable efficiency advantage for workshops and toolrooms.

Suitable for precision shops and general machining

The ER 25 collet is suited to tasks that require reliable clamping of small‑diameter cutters and drills in milling and machining centres. By ensuring low runout and uniform grip, the component supports higher tolerances and repeatability in series production as well as prototyping. Where accurate concentricity and repeatability are required, the collet’s combination of ER system compatibility and defined dimensional data ensures predictable integration into existing clamping setups.

For secure, repeatable clamping of small‑diameter tooling, contact Metav Werkzeuge to discuss the TECWERK ER 25 collet (SKU 2000832924NW) and arrange procurement or technical advice; email info@metav-werkzeuge.com or call +49 2822 7131930.

Technical data

• Article number: 2000832924NW
• Type: ER 25
• Brand: TECWERK
• Product type: ER collet
• Packing unit: 1

Dimensions & accuracy

• Clamping diameter (d): 3 mm
• Length (L): 34 mm
• Outside diameter (D): 26 mm
• Runout / repeatability: 5 µm
• Clamping range bridging: nominal −1.0 mm

Compatibility & features

• DIN 6499‑B standard
• Fits ER collet chucks
• Full‑length clamping; tools can be clamped on the chamfer
• No intermediate sizes required

FAQ

What clamping diameter does the collet support?
The collet supports a 3 mm clamping diameter and bridges undersized tools up to nominal −1.0 mm for secure retention.

Is this collet compatible with standard ER chucks?
Yes. The design conforms to DIN 6499‑B and fits ER‑type collet chucks used in milling and machining setups.

How precise is the runout of the collet?
The TECWERK ER 25 collet is specified with a runout and repeatability of 5 µm, ensuring consistent concentricity for precision work.

Can tools be clamped on the chamfer with this collet?
Yes. The collet allows full‑length clamping and can also retain tools when supported on the leading chamfer, enhancing versatility.

What are the main dimensions to consider when integrating this collet?
Key dimensions are clamping diameter 3 mm, length 34 mm and outside diameter 26 mm; these values support correct selection for ER 25 holders.

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