6mm ER 40 Collet Precision Hold, Ø41mm Clamp Range Nennmaß−1.0mm, L46mm - TECWERK

Compact, repeatable clamping and simple compatibility make this collet a pragmatic choice for precision workshops. With runout 5 µm and a 6 mm clamping diameter, the component ensures concentric gripping and predictable tool life; order directly via Metav Werkzeuge or consult our specialists for matching chucks and handling advice.

TECWERK ER 40/472 E Collet — ER 40 collet, 6 mm clamping diameter and 46 mm length

A TECWERK ER 40/472 E collet engineered for high-precision clamping in ER 40 toolholders, ideal for machining centres and toolroom applications

• Compliant with DIN 6499-B
• Full-length tool grip including chamfer
• High concentricity with 5 µm runout
• Suitable for 6 mm shank, L 46 mm

Consistent concentric clamping for improved machining accuracy

The collet delivers a runout 5 µm specification that translates into markedly better concentricity during high-speed milling and drilling. Reduced radial runout leads to smoother tool engagement, improved surface finish and longer cutter life. For production environments where repeatable tolerances matter, the concentric clamping offered here reduces rework and minimises scrap by keeping the tool axis stable throughout operation.

Standardised fit and faster set-up for flexible workflows

Built to DIN 6499-B, the clamping element fits standard ER 40 chucks and avoids the need for intermediate sizes. The design holds tools along the entire clamping length and permits clamping on the guiding chamfer, which eases set-up and shortens changeover times. This compatibility supports mixed-tool inventories and streamlines operations in small series and batch production without introducing additional fixturing complexity.

Compact dimensions with practical bridging for versatility

With an overall 46 mm length and an outer diameter of 41 mm, the collet remains compact while providing secure retention. The device bridges clamping diameter variations up to nominal minus 1.0 mm, enabling reliable gripping of slightly undersized shanks without auxiliary sleeves. The nominal 6 mm clamping diameter is therefore adaptable across a range of common tool shanks, offering flexibility for toolrooms and maintenance shops where a limited set of collets must cover multiple tool types.

Applications, benefits and workshop suitability

Designed for machining centres, milling machines and precision toolholding, this ER 40 clamping solution supports both small-batch manufacturing and demanding toolroom work. The combination of precision clamping and simple compatibility lowers setup time and increases throughput. Maintenance is straightforward due to the conventional ER design, while the high repeatability reduces inspection cycles and contributes to a stable production rhythm.

For reliable ER 40 clamping from a trusted partner, speak with Metav Werkzeuge about the TECWERK ER 40/472 E collet—our consultants will advise on compatibility and supply; email info@metav-werkzeuge.com or call +49 2822 7131930.

Technical data

• Article number: 2000832964NW
• Type: ER 40
• Product type: ER collet
• Brand: TECWERK
• Packaging unit: 1

Facts

• Clamping diameter: 6 mm
• Length L: 46 mm
• Outer diameter D: 41 mm
• Shank diameter d: 6 mm
• Runout / repeatability: 5 µm
• Clamping-diameter bridging: nominal − 1.0 mm

Special features

• Compliant with DIN 6499-B
• Fits ER 40 collet chucks
• Tools held along the whole clamping length
• Can be clamped on the guiding chamfer
• No intermediate sizes required

FAQ

What tolerance can be expected for concentricity?
The TECWERK ER 40/472 E collet specifies a runout and repeatability of 5 µm, ensuring tight concentricity for precision machining.

Will this collet fit standard ER 40 chucks?
Yes, the collet is manufactured to DIN 6499-B and is compatible with standard ER 40 toolholders.

Can slightly undersized tool shanks be clamped reliably?
Clamping-diameter bridging is nominal − 1.0 mm, allowing secure gripping of slightly undersized shanks without additional sleeves.

What are the main dimensions to check when replacing a collet?
Key dimensions are L 46 mm, outer diameter D 41 mm and the clamping diameter 6 mm; these determine fit and clearance in the holder.

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