12mm ER 40 Collet Precision Clamping, 5 µm Runout, L46mm - TECWERK

Achieve consistent tool concentricity and reliable holding with this ER 40 collet: 5 µm runout, full‑length gripping and a precise 12 mm nominal clamping diameter. Order the collet directly via Metav Werkzeuge or consult our specialists for application advice and selection support.

Collet ER 40/472 E — ER 40 collet, 12 mm clamping, TECWERK

The Collet ER 40/472 E is a precision ER 40 collet designed for secure 12 mm tool clamping in standard ER collet chucks for milling and turning applications.

• ER 40 collet for 12 mm clamping
• Conforms to DIN 6499-B
• Excellent runout accuracy 5 µm
• Full-length clamping including chamfer

Consistent concentricity for machining accuracy

A reliable clamping system reduces scrap and rework. The ER 40 collet is manufactured to DIN 6499‑B tolerances and delivers a typical runout of 5 µm, ensuring high concentricity for cutters and toolholders. This level of precision translates into improved surface finish and extended tool life, because consistent gripping reduces vibration and heat build‑up. The collet’s design guarantees that tools are held along their full clamping length, which improves axial stability and reduces the need for repeated re‑alignment when changing tools.

Fast integration and compatibility with ER chucks

Designed to fit standard ER type collet chucks, the component supports immediate integration into existing toolholding systems. The 12 mm nominal clamping diameter and the specified clamping diameter bridging (nominal minus 1.0 mm) permit small diameter adjustments without intermediate sizes. With a total length L: 46 mm, external diameter D: 41 mm and internal bore d: 12 mm, the collet is compact yet robust, offering a simple replacement option for workshops seeking dependable repeatability and reduced setup times.

Practical benefits for daily workshop use

Operational advantages include full‑length gripping capability and the option to clamp on the chamfer, which simplifies handling of short‑shank tools. The construction supports repeatable positioning, making the collet suitable for production environments where cycle‑to‑cycle consistency matters. Clear mechanical specifications and conformity to established standards make selection straightforward for purchasing and engineering teams, and the minimal requirement for intermediate sizes lowers inventory complexity while maintaining flexibility across a range of tooling tasks.

For tailored advice or to secure this TECWERK ER 40 collet for immediate use, contact Metav Werkzeuge for expert guidance and order placement — Metav Werkzeuge provides direct supply from Emmerich and application support to ensure the correct fit for the intended machining task.

Technical data

• Article number: 2000832972NW
• Type: ER 40
• Product: Collet ER
• Clamping diameter: 12 mm
• Packaging unit: 1

Facts

• Length (L): 46 mm
• Bore (d): 12 mm
• Outer diameter (D): 41 mm
• Runout / repeatability: 5 µm
• Clamping diameter bridging: nominal minus 1.0 mm

Special features

• Conforms to DIN 6499‑B
• Suitable for ER collet chucks
• Held along full clamping length
• Can be clamped on the guiding chamfer
• No intermediate sizes required

FAQ

What nominal clamping diameter does this collet provide?
The collet is specified for a nominal clamping diameter of 12 mm; the design allows a clamping diameter bridging of nominal minus 1.0 mm.

Is the collet compatible with standard ER 40 chucks?
Yes, the Collet ER 40/472 E from TECWERK is made to fit ER 40 collet chucks and follows DIN 6499‑B specifications.

What runout can be expected in service?
Typical runout and repeatability is stated as 5 µm, which supports high concentricity for precision machining using the ER 40 collet.

Can tools be clamped on the chamfer with this collet?
Yes, the design permits clamping on the guiding chamfer as well as along the full clamping length for short‑shank tools.

What is the article number for ordering and reference?
The article number for the TECWERK Collet ER 40/472 E is 2000832972NW.

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