16mm ER Collet, Clamping Length 46mm, Runout 5 µm - TECWERK

Benefit from precise clamping and low runout: compact dimensions and full-length clamping deliver consistent concentricity and dependable tool holding for production and workshop use. Order the collet directly via Metav Werkzeuge or ask the consultants for availability and advice.

TECWERK ER 40/472 E collet — ER 40 collet, 16 mm clamping diameter

A TECWERK ER 40/472 E collet designed for secure, high-precision clamping in ER 40 collet chucks across production and repair work

• DIN 6499-B compatibility
• Full-length tool clamping
• Runout and repeatability 5 µm
• Clamping diameter 16 mm, L 46 mm

Consistent concentricity through precise geometry

The collet is engineered to deliver consistent concentricity in demanding machining tasks. Conformance to DIN 6499-B ensures compatibility with standard ER systems while the full-length clamping principle holds the tool along its entire clamping surface, reducing deflection and vibration. The specified runout and repeatability of 5 µm provides a measurable improvement in finish quality and tool life compared with less rigid clamping methods, supporting stable process capability in serial and single-part production.

Easy integration and reduced tooling complexity

Compatibility with ER 40 chucks simplifies tool management: no intermediate sizes are required and the clamping geometry permits the use of the lead-in chamfer for quick seating. The design allows a clamping-range bridging of nominal minus 1.0 mm, which reduces the need for multiple collet sizes and streamlines inventory. For procurement and workshop planning this translates into fewer SKUs, faster setup and reduced changeover time when replacing or adjusting tooling in ER collet chucks.

Compact dimensions with reliable holding power

With a clamping diameter of 16 mm, an overall length L: 46 mm and outer diameter D: 41 mm, the collet offers a compact solution without compromising on holding capacity. The geometry supports stable tool retention even when the tool is positioned on the guiding chamfer, making it suitable for short-reach milling, drilling and reaming operations where space is limited. Selection of this collar-style clamping sleeve is appropriate for general workshop and light to medium production environments seeking dependable repeatability.

Practical benefits for workshop efficiency

The collet’s ability to grip tools over the whole clamping length reduces slippage and maintains concentricity during extended runs, which lowers scrap rates and the need for rework. Because intermediate sizes are unnecessary, maintenance routines become simpler and spare-part lists shorter. The measurable technical values support a rational purchasing decision: documented 5 µm runout and standard compliance make the component suitable for quality-focused workshops that require traceable, reproducible clamping performance.

Contact Metav Werkzeuge for stock, advice and delivery from Emmerich — their specialists will confirm compatibility and lead times for the TECWERK ER 40/472 E collet (SKU 2000832976NW)

Technical Data

• Article number: 2000832976NW
• Manufacturer: TECWERK
• Product type: ER 40 collet
• Packing unit: 1

Core data

• Clamping diameter: 16 mm
• Length L: 46 mm
• Outer diameter D: 41 mm
• Runout / repeatability: 5 µm
• Clamping-range bridging: nominal minus 1.0 mm

Special features

• Conforms to DIN 6499-B
• Suitable for ER collet chucks
• No intermediate sizes required
• Tools held along full clamping length
• Can be clamped on the guiding/lead-in chamfer

FAQ

What is the declared runout for this collet?
The declared runout and repeatability for the TECWERK ER 40/472 E collet is 5 µm, ensuring high concentricity in standard ER 40 setups.

Can the collet be used on the leading chamfer of a tool shank?
Yes, the design permits clamping on the guiding/lead-in chamfer so that tools can be seated securely along the whole clamping length.

Which standard does the collet comply with?
The collet is manufactured to DIN 6499-B, guaranteeing compatibility with ER 40 collet chucks that follow the same standard.

What is the clamping-range bridging capability?
The collet bridges the clamping range by nominal minus 1.0 mm, reducing the need for additional intermediate sizes.

What are the key dimensions to check when replacing collets?
Key dimensions are the clamping diameter 16 mm, overall L: 46 mm and D: 41 mm; the SKU for ordering is 2000832976NW.

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