171mm Reducing Sleeve MK5 to MK4 Hardened Ground DIN 2185 - TECWERK

Benefit from a robust adapter that combines DIN 2185 conformity with a fully hardened and ground finish and a precise MT5-to-MT4 taper transition for secure toolholding and minimal runout. The sleeve’s 171 mm overall length and internal/external machining ensure stable seating for Morse taper tools; order the reducing sleeve directly via Metav Werkzeuge or consult the team for application-specific guidance.

Reducing sleeve DIN 2185 MT5→MT4 — TECWERK

The Reducing sleeve DIN 2185 MT5→MT4 adapts tools with a Morse taper shank to larger machine tapers, offering a hardened and ground connection for reliable machining in workshops and industrial toolrooms.

• DIN 2185 compliant reducing sleeve
• Hardened and ground inside and out
• Adapts MT5 spindles to MT4 tools
• Total length 171 mm

Precision fit for repeatable toolholding

The adapter is manufactured to the DIN 2185 standard, which governs dimensions and tolerances for taper adapters; this guarantees a consistent interface between spindle and tool shank. With both the internal and external surfaces hardened and ground, the component reduces the risk of slippage and maintains concentricity under load. For production environments where repeatable positioning is essential, the hardened, ground finish delivers tangible improvements in runout stability and tool life.

Versatile compatibility across machine applications

Designed as a taper transition from MT5 (outer taper) to MT4 (inner taper), the sleeve permits the use of smaller-shank tooling in larger spindles without modifying fixtures or holders. The adapter’s 171 mm overall length provides sufficient engagement for secure seating while preserving access to cutting tools. The solution is suitable for turning, drilling and reaming tasks where Morse taper shanks are standard, making it a practical choice for maintenance shops and production lines alike.

Durable construction that simplifies workshop logistics

The component’s execution as a fully hardened and ground sleeve reduces surface wear and the need for frequent replacements, contributing to lower downtime and predictable maintenance intervals. By standardising on DIN-compliant adapters, procurement benefits from interchangeability and fewer bespoke parts. This approach supports efficient inventory management in toolrooms and helps streamline operations while assuring the mechanical integrity expected in demanding machining contexts.

Contact Metav Werkzeuge for a specification check and secure the TECWERK reducing sleeve DIN 2185 MT5→MT4 for precise taper adaptation directly from our Emmerich distribution centre.

Technical data

• Article number: 2000832361NW
• Standard: DIN 2185
• Brand: TECWERK

Facts

• Total length: 171 mm
• Inner taper: MT4
• Outer taper: MT5
• Packaging unit: 1

Special features

• Completely hardened and ground
• Suitable for tools with Morse taper shank
• Execution: hardened and ground

FAQ

What taper sizes does this adapter connect?
The reducing sleeve connects an MT5 outer taper to an MT4 inner taper, allowing MT4-shank tools to be used in MT5 spindles; the TECWERK adapter is manufactured to DIN 2185 tolerances.

Is the sleeve suitable for heavy-duty machining?
With a fully hardened and ground construction, the sleeve is designed for demanding workshop conditions and supports secure seating under typical machining loads.

How long is the adapter and why does length matter?
The total length is 171 mm; this provides sufficient engagement for stable clamping and helps preserve concentricity between spindle and tool.

Does the sleeve require special maintenance?
Regular inspection for wear and light lubrication of contact surfaces is recommended; the hardened and ground finish of the reducing sleeve extends service life and reduces maintenance frequency.

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