12mm ER25 Collet 34mm Clamping Length, 5 µm Runout, DIN 6499-B - TECWERK

Take advantage of the collet's compliance with DIN 6499-B, its 5 µm runout and repeatability, and the secure full‑length tool grip for consistent machining results; order the TECWERK ER 25 collet directly via Metav Werkzeuge or ask our consultants if needed.

TECWERK ER 25 Collet — ER 25/430 E, 12 mm clamping diameter

The TECWERK ER 25/430 E is a precision ER collet for reliable tool holding in standard ER collet chucks, designed for workshop and light industrial machining.

DIN 6499‑B standardised design
Full‑length tool grip for stable clamping
Runout and repeatability 5 µm
Clamping diameter 12 mm

Consistent precision for accurate machining

Compliance with DIN 6499‑B and a measured 5 µm value for runout and repeatability make this ER collet a dependable choice where dimensional accuracy matters. The standardised geometry ensures predictable behaviour across setups, reducing scrap and rework. The narrow tolerance on concentricity translates into tighter toolpaths and more consistent part quality, which benefits serial production and precision prototypes alike.

Secure grip across the entire clamping length

The collet holds tools along the full‑length grip, so cutters and drills are supported more evenly than with end‑only clamping. This design enables clamping on the lead chamfer as well, simplifying setups for short shank tools. The capacity to bridge gaps up to nominal minus 1.0 mm increases flexibility for slightly undersized tools without the need for intermediate sleeves, contributing to faster changeovers and improved process reliability.

Compact form factor for flexible workshop use

Built to the ER 25 specification, this collet fits common ER collet chucks while keeping a short overall length for minimal stick‑out and improved rigidity. Key dimensions: L 34 mm, d 12 mm, D 26 mm, supporting a clamping diameter 12 mm for numerous standard tooling applications. The compact footprint reduces overhang, which in turn improves machining stability and surface finish when compared with longer holding solutions.

For precision clamping with TECWERK quality and support from Metav Werkzeuge, contact Metav Werkzeuge for ordering and tailored advice at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 2000832933NW
• SKU: 2000832933NW
• Product type: ER 25 collet
• Label: Spannzange Typ ER 25/430 E Spann‑D.12mm TECWERK
• Manufacturer: TECWERK

Facts

• Clamping diameter: 12 mm
• Runout / repeatability: 5 µm
• Length (L): 34 mm
• Inner diameter (d): 12 mm
• Outer diameter (D): 26 mm
• Clamping diameter bridging: nominal minus 1.0 mm

Special features

• Complies with DIN 6499‑B
• Suitable for ER collet chucks
• Tools held along the entire clamping length
• Can be clamped on the lead chamfer
• No intermediate sizes required

FAQ

What degree of concentricity can be expected from this collet?
The collet delivers a measured runout and repeatability of 5 µm, ensuring high concentricity for precision operations with the TECWERK ER 25 collet (SKU 2000832933NW).

Is the collet compatible with standard ER chucks?
Yes, the item is designed for compatibility with standard ER collet chucks and follows DIN 6499‑B dimensions for ER 25 tooling.

Can shorter tools be clamped securely with this collet?
The collet holds tools along the full clamping length and can be used on the lead chamfer, improving secure clamping for short shank tools.

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