215mm Extension Sleeve MK3×MK3 Hardened Ground According To DIN 2187 - TECWERK

Benefit from the combination of DIN 2187 accuracy, fully hardened and ground surfaces, and a 215 mm overall length for reliable extended-reach machining. Order the extension sleeve directly via Metav Werkzeuge or ask our consultants for technical advice.

Extension sleeve DIN 2187 MK3×MK3 – TECWERK

The Extension sleeve DIN 2187 MK3×MK3 is an industrial extension sleeve that extends Morse taper tooling to reach deeper bores while maintaining precision and interchangeability for workshop and toolroom applications

• DIN 2187 accuracy version
• Fully hardened and ground inside and out
• For tools with Morse taper MK3
• Total length 215 mm for extended reach

Engineered for consistent machining accuracy

Manufactured to the DIN 2187 specification, this extension sleeve is designed as an accuracy version to ensure repeatable positioning and stable results in precision operations. The internal and external surfaces are hardened and ground, which reduces surface distortion and helps preserve the intended geometry under load. As a consequence, tool runout is minimised and concentricity is maintained, delivering reliable component tolerances in milling, drilling and reaming tasks where repeatability is essential.

Extended reach with retained rigidity

With a total length of 215 mm and a usable length of 112 mm, the sleeve provides additional reach for machining tasks that would otherwise require inconvenient setups or special tooling. The larger outer diameter (D 36 mm) contributes to torsional stiffness, so extended-reach applications do not come at the expense of stability. This design reduces the need for multiple tool changes and simplifies clamping strategies, improving workflow efficiency on production runs and one-off engineering tasks alike.

Built to withstand regular workshop use

The sleeve is supplied in a fully hardened and ground finish both internally and externally, which enhances surface wear resistance and reduces the frequency of replacement. The robust treatment of contact faces ensures long service life in continuous-shop environments, while precision grinding provides smooth mating with mating tapers. The Extension sleeve DIN 2187 MK3×MK3 by TECWERK is therefore suited to workshops that demand dependable tooling performance with low maintenance overhead.

Easy integration and broad compatibility

Standardised to DIN 2187 and fitted with MK3 internal and external tapers, this sleeve is compatible with a wide range of Morse taper tooling and spindles, enabling straightforward interchangeability across machines and fixtures. The adherence to the norm simplifies procurement and setup, allowing toolrooms to maintain consistent inventories and reduce adapter complexity. That interoperability supports faster changeovers, fewer assembly errors and a more predictable production flow.

For detailed application advice or to arrange supply from Metav Werkzeuge’s Emmerich warehouse, contact Metav Werkzeuge for expert guidance and dependable delivery

Technical Data

• Article number: 2000832340NW
• Standard: DIN 2187
• Product: Extension sleeve
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Total length L2: 215 mm
• Usable length L1: 112 mm
• Outer diameter D: 36 mm
• Internal taper: MK3
• External taper: MK3

Special features

• Accuracy version to DIN 2187
• Fully hardened and ground inside and out
• Designed for tools with Morse taper

FAQ

What tolerance and precision can be expected from this sleeve?
The extension sleeve complies with the DIN 2187 accuracy version; the TECWERK extension sleeve is ground and hardened to preserve concentricity and provide consistent repeatability.

Is the sleeve compatible with MK3 tooling and spindles?
Yes, the product features an internal and external MK3 taper and is intended for use with Morse taper tooling, ensuring direct compatibility.

What are the main dimensions of the sleeve?
The TECWERK extension sleeve has a total length of 215 mm (L2), a usable length of 112 mm (L1) and an outer diameter of 36 mm.

Can the sleeve be used for deep-hole drilling or long-reach operations?
The 215 mm overall length is specifically provided to extend tool reach while retaining rigidity, so the sleeve is suitable for many deep or hard-to-access machining tasks.

How is the sleeve finished and what does that mean for service life?
The extension sleeve is fully hardened and ground inside and out; this surface treatment improves wear resistance and helps maintain precise taper contact over prolonged use.

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