ER 11 Collet Wrench For ER/ESX Collet Nuts, Hardened Special Steel - TECWERK

Take advantage of secure clamping for ER/ESX collet nuts, the compact mini design and the hardened special steel construction for consistent toolholding and reduced setup times; order or consult with Metav Werkzeuge for procurement and technical advice.

Collet Wrench ER Mini No.250K — Compact tool for ER 11 collet nuts (TECWERK)

The Collet Wrench ER Mini No.250K is a compact, workshop-ready key designed for the secure tightening of ER/ESX collet nuts in machine tool and toolroom environments.

• Secure clamping for ER/ESX collet nuts
• Compatible with ER 11 size
• Hardened special steel construction
• Compact mini design for tight spaces

Consistent toolholding for reliable production

The compact key delivers secure clamping for ER/ESX collet nuts in accordance with DIN 6499, which supports repeatable and dependable toolholding. By ensuring the collet nut is correctly tightened, the wrench helps to reduce runout and vibration during machining, which directly contributes to longer cutter life and more consistent part quality. For production environments where process stability matters, correct clamping reduces rework and machine downtime, improving overall throughput and operational reliability.

Robust design that resists wear and corrosion

Manufactured from special steel and finished in a blued finish (tempered brown tone), this compact key offers mechanical strength with surface protection against everyday workshop corrosion. The tempering adds toughness to the steel while the blued finish provides a layer of oxidation resistance, making the tool suitable for regular use at the bench or on the machine. The durable construction supports frequent tightening cycles without rapid wear, so maintenance intervals are extended and replacement costs are reduced.

Compact form to speed up setups in confined spaces

The mini format is intended for accessibility where a full-size spanner would be impractical. The reduced profile improves reach into densely packed toolholders and spindle noses, enabling quicker changeovers and safer handling in tight assemblies. As a simple, purpose-built tool, it integrates seamlessly into existing setup routines and supports faster, more ergonomic clamping operations—helping workshop teams to maintain pace with production demands while keeping operations safe and repeatable.

Contact Metav Werkzeuge for tailored advice on fitting and delivery of the TECWERK Collet Wrench ER Mini No.250K from our Emmerich quality hub

Technical Data

• Article number: 4000605373NW
• Designation: Collet Wrench ER Mini No.250K
• Product type: Collet wrench

Core data

• Size: ER 11
• SKU / UID: 4000605373NW

Special features

• For secure tightening of collet nuts of the ER/ESX system according to DIN 6499
• Made from special steel
• Blued finish (tempered brown tone)
• Mini/compact design for restricted spaces

FAQ

Is this wrench suitable for ER 11 collets?
Yes. The Collet Wrench ER Mini No.250K is specified for ER 11 collet nuts and is compatible with the ER/ESX system.

What material and finish does the tool have?
The TECWERK key is manufactured from special steel and supplied with a blued finish (tempered brown tone) for enhanced surface protection.

Does the tool comply with a recognised standard?
The design is intended for use with collet nuts produced to DIN 6499, ensuring compatibility with standard ER/ESX toolholding systems.

Is the mini key suitable for tight machine environments?
Yes. The compact format of the key is designed for tight spaces, making it useful at the bench and in crowded spindle areas where full-size wrenches are impractical.

How does the wrench support production reliability?
By enabling secure, repeatable clamping of collet nuts, the tool helps to reduce runout and vibration, contributing to consistent part quality and longer tool life.

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