4.5mm ER32-GB Collet With 3.4mm Square Drive, 15µm Runout, 40mm Length - TECWERK

The combination of precise runout control and a DIN 6499 internal square delivers consistent thread quality and reliable tapping performance; order the collet directly via Metav Werkzeuge or consult our specialists for technical matching and fast supply.

TECWERK ER 32-GB collet (internal square, 4.5 mm clamping)

The ER 32-GB collet is a compact tapping collet with an internal square designed for secure thread cutting in ER systems, suitable for precision workshops and toolrooms.

• DIN 6499 internal square for tapping
• Runout accuracy 15 µm
• Clamping diameter 4.5 mm
• Compact length 40 mm

Optimised concentricity for high-quality threads

Manufactured to meet the DIN 6499 specification, this tapping collet provides an internal square interface that centres taps precisely and reduces wobble during thread cutting. The guaranteed runout of 15 µm ensures high concentricity, which translates into cleaner threads and fewer rejects. For operations where repeatable thread geometry matters, this level of runout control reduces rework and increases first-pass yield on production and maintenance tasks.

Compact dimensions for straightforward integration

With a total length of 40 mm and a clamping diameter of 4.5 mm, the collet fits into standard ER collet chucks without added bulk, keeping setups compact and accessible. The internal square measures 3.4 mm, matching common tap shank sizes used in small-diameter threading. This compact footprint simplifies toolpath planning, shortens setup times and allows reliable use in confined toolholders or multi-spindle arrangements.

Consistent clamping that stabilises processes

Precision in manufacture results in tight tolerances and consistent clamping, both vital for reducing vibration and tool wear during tapping. The secure hold on the tap minimises axial and radial movement, which extends tap life and lowers the frequency of changes. For maintenance workshops and small-batch production, that stability leads to measurable improvements in process reliability and throughput without the need for frequent adjustments.

Practical application notes and workshop advantages

Designed primarily for tapping and thread-cutting tasks in ER systems, this collet suits applications where small-diameter threads are produced repetitively. The collet is supplied as a single unit (packaging unit: 1) and is especially useful when paired with dedicated tap holders or ER tapping chucks. For integration into an existing tool set, ensure the chuck accepts ER32 and that the tap shank matches the 3.4 mm internal square for optimal engagement.

For precise tapping performance from TECWERK, contact Metav Werkzeuge for product matching, technical advice and reliable supply directly from Emmerich.

Technical data

• SKU: 2000834969NW
• Type: ER 32-GB
• Label: Spannzange ER32-GB Spann-D.4,5mm 4-KT.3,4mm TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Clamping diameter: 4.5 mm
• Length: 40 mm
• Square drive: 3.4 mm
• Runout / roundness: 15 µm

Special features

• DIN 6499 internal square for tapping
• Compatible with ER collet chucks
• Suitable for thread cutting in ER systems

FAQ

What is the runout specification and why does it matter?
The runout is specified at 15 µm; this level of concentricity reduces wobble during tapping and improves thread quality when using the TECWERK ER 32-GB collet.

Is the collet compatible with standard ER32 chucks?
Yes, the collet is designed for ER systems and fits ER32 collet chucks for secure tapping and clamping operations.

Which tap shank size does the internal square accept?
The internal square measures 3.4 mm, suitable for matching taps with a corresponding square shank or holders designed for that dimension when using the ER 32-GB.

How long is the collet and how does size affect its use?
Total length is 40 mm; the compact size facilitates installation in confined toolholders and helps maintain rigidity during threading tasks.

How is the product supplied?
The item is supplied as a single unit, packaging unit: 1, ready for immediate fitting into an ER32 system.

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