4mm ER32 Collet Precision Clamping, 5 µm Runout Accuracy, L40mm - TECWERK

Take advantage of precise tool retention and proven runout performance combined with easy integration into ER systems for uninterrupted machining. The combination of full-length holding and a narrow clamping diameter 4 mm minimises slippage and improves surface quality. Order or request advice via Metav Werkzeuge for seamless setup and application support.

Collet type ER 32/470 E — ER 32 collet, 4 mm clamping diameter (TECWERK)

The Collet type ER 32/470 E is a precision ER 32 collet designed for secure clamping of 4 mm shank tools in ER-style collet chucks, compliant with DIN 6499-B.

• ER 32 compatibility, DIN 6499-B
• Precise runout and repeatability 5 µm
• Holds along full clamping length

Consistent accuracy that reduces rework and scrap

Engineered to meet DIN 6499-B, the ER 32 collet offers a runout and repeatability of 5 µm, ensuring consistent tool positioning in serial and single-piece production alike. This level of precision reduces oscillation and vibration at the tool tip, which directly lowers the risk of chatter and the need for rework. For operations where surface finish and dimensional tolerance matter, the reliable clamping behaviour translates into measurable quality gains and less downtime for adjustments.

Compatibility and practical advantages for workshop integration

The collet is made to fit standard ER 32 collet chucks and benefits from full clamping length contact, so tools are supported along their entire shank rather than only at the tip. The design allows clamping on the lead chamfer and includes a clamping range bridging: nominal minus 1.0 mm, meaning slightly undersized shanks are gripped securely without intermediate spacers. This compatibility reduces the number of intermediate measures required and shortens setup times when swapping tools in busy machining cells.

Operational reliability and clear dimensional data for planning

With a compact overall length (L 40 mm), an inner diameter d 4 mm, and an outer diameter D 33 mm, the collet is easy to handle and store while maintaining sufficient rigidity for high-precision tasks. The narrow clamping diameter 4 mm is ideal for small-diameter end mills, drills and reamers where concentricity is critical. Because the tool is held along its full clamping length, operators can expect improved stability and less micro-movement during high-speed milling or finishing operations, helping to protect expensive cutting edges and improve throughput.

Contact Metav Werkzeuge for tailored guidance on integrating the TECWERK ER 32 collet into existing collet chucks and to secure the right clamping solution for demanding production requirements.

Technical data

• Article number: 2000832940NW
• Type: ER 32
• Product: Collet type ER 32/470 E
• Brand: TECWERK
• Packaging unit: 1

Core measurements

• Clamping diameter: 4 mm
• Overall length L: 40 mm
• Inner diameter d: 4 mm
• Outer diameter D: 33 mm
• Runout & repeatability: 5 µm
• Clamping range bridging: nominal minus 1.0 mm

Standards and features

• Compliance: DIN 6499-B
• Holds tools along full clamping length
• Can be clamped on lead chamfer
• Suitable for ER collet chucks
• Designed for secure tool retention

FAQ

What level of concentricity can be expected with this collet?
The TECWERK ER 32 collet delivers a runout and repeatability of 5 µm, providing high concentricity for precision machining.

Can undersized tool shanks be clamped securely?
Yes. The collet features a clamping range bridging of nominal minus 1.0 mm, allowing secure clamping of slightly undersized shanks without intermediate spacers.

Is this collet compatible with standard ER 32 chucks?
The collet is manufactured to DIN 6499-B and is compatible with standard ER 32 collet chucks for straightforward integration.

What are the key dimensions for toolholder planning?
Key dimensions are L 40 mm, d 4 mm and D 33 mm, which assist in planning fixture clearances and storage.

How does full-length holding improve machining outcomes?
Holding the tool along the full clamping length increases support and reduces micro-movement, which improves surface finish and extends cutter life.

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