11mm ER25 Collet Precision Clamping, 5 µm Runout, L34 D26 - TECWERK

Take advantage of precise DIN‑compliant clamping, a compact 11 mm clamping diameter and low runout for consistent tool performance; order the collet directly via Metav Werkzeuge or consult the team for integration advice.

Collet ER 25/430 E – ER 25 collet, clamping Ø 11 mm (TECWERK)

The Collet ER 25/430 E is a high-precision ER 25 collet designed for secure tool holding in ER collet chucks across general machining applications.

• DIN 6499-B compatibility
• 11 mm clamping diameter
• 5 µm runout repeatability
• Full-length tool clamping

Precise compatibility that reduces setup time

Engineered to the DIN 6499-B standard, this ER 25 collet ensures consistent fitment in standard ER 25 collet chucks and removes uncertainty when matching tools to chucks. The standardised design and compatibility mean fewer adaptor parts and less inventory overhead, which translates into faster changeovers and lower administrative effort for purchasing. The specification for 5 µm runout underscores the collet’s contribution to precise machining results, supporting longer tool life and more uniform surface finish without requiring specialist fixtures.

Compact dimensions for reliable integration

With a body length of L: 34 mm, an inner bore d: 11 mm and an outer diameter D: 26 mm, the collet combines compact form with robust clamping capability. The clamping‑diameter bridging is defined as nominal size minus 1.0 mm, allowing the collet to compensate for a small amount of variation and maintain a secure grip. Because tools are held along the whole clamping length, axial play is minimised and concentricity is preserved, which helps maintain process stability during higher spindle speeds or when using slender tooling.

Operational benefits for workshop productivity

Reliable repeatability and the ability to clamp on the tool lead chamfer reduce set‑up adjustments and rework, improving first‑pass yield on production runs. The combination of standard compliance, compact geometry and low runout supports efficient changeovers and predictable machining outcomes, which contributes directly to lower micro‑vibration and reduced scrap. For procurement and maintenance teams, the clear technical parameters simplify specification and reordering, while workshop operatives benefit from the straightforward handling and secure clamping behaviour.

For tailored advice or to secure the TECWERK ER 25 collet for immediate integration, contact Metav Werkzeuge in Emmerich by phone +49 2822 7131930 or email info@metav-werkzeuge.com — experts on precision tooling and workshop supply are available to assist.

Technical data

• Article number: 2000832932NW
• Type: ER 25
• Label: Spannzange Typ ER 25/430 E Spann-D.11mm TECWERK
• Product type: ER collet
• Manufacturer: TECWERK

Core data

• Clamping diameter (d): 11 mm
• Outer diameter (D): 26 mm
• Length (L): 34 mm
• Runout / repeatability: 5 µm
• Spannbereich: 11
• Clamping‑diameter bridging: nominal minus 1.0 mm

Special features

• Conforms to DIN 6499‑B
• Suitable for ER 25 collet chucks
• Tools held along the full clamping length
• Can be clamped on the lead chamfer
• Designed for precision runout and repeatability

FAQ

What chuck types is this collet compatible with?
This collet is designed for use with ER 25 collet chucks and conforms to DIN 6499‑B, ensuring standardised compatibility in ER 25 systems.

What does the clamping‑diameter bridging of 'nominal minus 1.0 mm' mean?
It indicates the collet can compensate for up to 1.0 mm below the nominal diameter, allowing secure clamping across a small range of tool diameters while maintaining concentricity.

How important is the 5 µm runout specification?
A 5 µm runout figure denotes tight concentricity, which reduces vibration, improves surface finish and prolongs tool life when the collet is used in appropriate ER 25 setups.

Can the collet clamp on the tool chamfer?
Yes, the design permits clamping on the tool lead chamfer as well as along the full clamping length, offering flexibility in how tools are seated and secured.

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