12mm ER Collet 40mm Length, DIN 6499-B Accuracy 5 µm - TECWERK

Combining reliable runout accuracy and secure full‑length holding, this ER collet delivers repeatable clamping for workshop and CNC applications. Benefit from DIN 6499‑B conformity and a 5 µm runout specification for consistent part quality; order via Metav Werkzeuge or consult our specialists for fitment and availability.

TECWERK ER 32 Collet (Clamping Ø 12 mm, L 40 mm)

The TECWERK ER 32 collet is a precision clamping component for ER collet chucks, engineered to maintain concentricity and hold tools along the full clamping length in milling and turning setups

• DIN 6499‑B standard compliance
• Held along entire clamping length
• Runout and repeatability: 5 µm
• Clamping range bridging: nominal −1.0 mm

Improved process reliability through tight runout control

The primary benefit of this ER collet is consistent concentricity, demonstrated by a 5 µm runout and repeatability figure. Such precision reduces part rework and scrap in production environments where tight tolerances matter. Because the clamping element is designed to be held along the entire clamping length, axial and radial stability are improved, so machining cycles remain predictable and tool life is extended. For workshops and small series production, this stability translates directly into fewer rejects and smoother downstream processes.

Straightforward integration with ER chucks and standard tooling

Compliance with DIN 6499‑B ensures the collet fits standard ER systems without the need for intermediate adapters, which simplifies tooling logistics and reduces setup time. The component accepts clamping on the pilot chamfer and can bridge the diameter by nominal −1.0 mm, allowing flexible use with slightly undersized shanks. Specified dimensions (L 40 mm, Ø 12 mm, outer D 33 mm) enable easy comparison with existing holders and ensure predictable compatibility across ER 32 collet chucks.

Practical benefits for workshop efficiency and handling

Manufactured to perform in everyday shop conditions, the collet’s design supports quick changeovers and precise reclamping, improving throughput on both CNC machines and manual equipment. Retaining tools over the full clamping length means the workpiece or cutter is guided more securely, lowering vibration and producing a cleaner surface finish. The construction makes it suitable for repeated use without complex maintenance routines, supporting long service cycles and reliable production output.

For reliable clamping precision with TECWERK components, contact Metav Werkzeuge for availability and tailored technical advice from our Emmerich location.

Technical data

• Article number: 2000832948NW
• Type: ER 32
• Product: ER collet
• Packaging unit: 1

Facts

• Clamping diameter: 12 mm
• Length (L): 40 mm
• Inner diameter (d): 12 mm
• Outer diameter (D): 33 mm
• Runout / repeatability: 5 µm
• Clamping range bridging: nominal −1.0 mm

Special features

• Conforms to DIN 6499‑B
• Suitable for ER collet chucks
• Held along entire clamping length
• Can be clamped on pilot chamfer
• Label: Spannzange Typ ER 32/470 E Spann‑D.12mm TECWERK

FAQ

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

Is the collet compatible with standard ER 32 chucks? Yes. Conformity to DIN 6499‑B means the collet fits standard ER 32 collet chucks without intermediate adapters.

Can slightly undersized tool shanks be clamped securely? The collet allows a clamping range bridging of nominal −1.0 mm, enabling secure clamping of slightly smaller shanks.

Which dimensions should be checked to ensure fitment? Compare the collet’s L 40 mm, inner Ø 12 mm and outer D 33 mm with the holder and tools to confirm compatibility.

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