4mm ER16 Collet Precision Clamping, 5 µm Runout, L27mm - TECWERK

Take advantage of DIN 6499‑B conformity and the 5 µm runout accuracy to ensure stable, repeatable machining; the 4 mm clamping diameter and full clamping length support secure tool holding for consistent results. Order the collet directly via Metav Werkzeuge or contact our consultants for specification advice.

Collet ER 16/426 E, clamping dia 4 mm (TECWERK) — ER 16 collet for precise, secure tool clamping

A TECWERK ER 16 collet designed for standard ER-type collet chucks, offering DIN 6499‑B compliance and high repeatability for demanding machining tasks.

• DIN 6499‑B conformity
• Full clamping length tool retention
• Runout and repeatability 5 µm
• Suitable for ER-type collet chucks

High-accuracy clamping for predictable machining results

The ER 16 collet is manufactured to the DIN 6499‑B specification, delivering a runout and repeatability of 5 µm that reduces variance between setups. This precision translates directly into fewer rejects and less rework in serial production, which improves overall process efficiency. By focusing on measurable tolerances rather than marketing claims, the design supports predictable cutting performance and stable spindle behaviour, a clear advantage for shops seeking consistent component quality.

Flexible clamping range and practical workshop benefits

With a nominal clamping diameter of 4 mm and a clamping diameter bridging of nominal minus 1.0 mm, the collet allows secure holding even when the effective tool diameter is slightly undersize. The compact L 27 mm length and D 17 mm outer diameter make the component suitable for tight setups, while the fact that tools are held over the full clamping length and may be clamped on the lead chamfer increases versatility. This reduces the need for stocking intermediate sizes and simplifies inventory management without compromising grip or concentricity.

Robust integration into ER-type toolholding systems

Designed to work with standard ER-type collet chucks, the component provides compatibility across common toolholders and machine spindles. The combination of standardised dimensions and reliable clamping behaviour supports fast changeovers and repeatable positioning, which is especially useful in CNC and production environments where setup time and process stability matter. The construction ensures that cutting tools remain held firmly along the usable length, improving tool life and cutting consistency under varied operating conditions.

Contact Metav Werkzeuge for procurement and technical guidance on TECWERK ER 16 collets, available from stock and backed by specialist advice.

Technical Data

• Article number: 2000832915NW
• Product type: Spannzange ER
• Brand: TECWERK

Core data

• Clamping diameter: 4 mm
• Length L: 27 mm
• Outer diameter D: 17 mm
• Runout / repeatability: 5 µm
• Clamping diameter bridging: nominal − 1.0 mm

Special features

• Conforms to DIN 6499‑B
• Fits ER-type collet chucks
• Tools held over full clamping length
• Can be clamped on the lead chamfer
• No intermediate sizes required

FAQ

What tolerance can be expected for concentricity with this collet?
The ER 16 collet achieves a runout and repeatability of 5 µm, which provides tight concentricity suitable for precision milling and drilling with standard ER chucks.

Is this collet compatible with standard ER-type chucks?
Yes, the collet is sized for ER-type collet chucks and follows the ER 16 specification, ensuring compatibility across matching ER chucks and toolholders.

How does the clamping diameter bridging affect tool selection?
The specified clamping diameter bridging (nominal − 1.0 mm) allows the collet to grip slightly undersized tools securely, reducing the need for intermediate sizes while maintaining a reliable hold.

Can tools be clamped on the chamfer with this component?
Tools may be clamped on the lead chamfer; the design holds the tool over the full clamping length for greater stability during cutting operations.

Which dimensions are relevant when checking for fit in a holder?
Check the nominal clamping diameter (4 mm), overall length (L 27 mm) and outer diameter (D 17 mm) to verify fit within an ER 16 holder and the machine’s tool envelope.

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