156mm Reducer Sleeve MK5 to MK3 Hardened And Ground, DIN 2185 - TECWERK

Take advantage of the combination of DIN 2185 conformity, a fully hardened and ground finish and a secure fit between MK5 and MK3 tapers for dependable spindle-to-tool transitions; order the reducer sleeve directly via Metav Werkzeuge or consult our technical advisers for compatibility checks.

Reducing sleeve DIN 2185 MK5×MK3 (hardened, ground) – TECWERK

A reducing sleeve Reducing sleeve DIN 2185 MK5×MK3 (hardened, ground) designed to adapt tools with Morse taper connections while maintaining concentricity and mechanical integrity.

• DIN 2185 standard compliance
• Hardened and ground inside and out
• Fits Morse tapers MK5 to MK3
• Total length 156 mm

Dependable tolerance and machining accuracy

The reducer conforms to DIN 2185, providing a standardised interface that supports repeatable seating and alignment. The hardened construction combined with inside and outside ground surfaces minimises radial play and helps reduce runout at the tool tip. This predictability turns into measurable time savings during setup and fewer rejected parts in repetitive production runs, making the component suitable for precision toolrooms and everyday workshop use.

Seamless compatibility with Morse taper tooling

Designed specifically for adapting between MK5 and MK3 tapers, the sleeve enables older or mixed tooling to be used without remachining spindles or toolholders. The internal and external ground finishes ensure a snug mechanical fit with morse taper shanks, so retention and torque transmission remain consistent under load. For workshops that frequently change tooling, this adapter avoids the cost and downtime of dedicated holders while keeping spindle concentricity intact.

Durable construction reduces maintenance needs

The sleeve’s fully hardened body resists surface fatigue and wear from repeated insertion and withdrawal cycles, extending service life under typical machining conditions. Ground mating faces preserve precision over time, reducing the need for frequent regrinding or replacement. The result is a low-maintenance solution that retains accuracy and contributes to predictable maintenance intervals in production environments.

Practical integration and everyday workshop benefits

With a total length of 156 mm, this adapter provides sufficient engagement length to ensure secure contact between both tapers while remaining compact for typical lathe and drill press workflows. Supplied as a single unit, it is simple to store and deploy as required. Metav’s quality screening for the European market ensures consistent product checks at the Emmerich facility, and the component is particularly well suited to repair shops, prototyping benches and industrial maintenance departments that prioritise reliability and interchangeability.

Contact Metav Werkzeuge for tailored advice on compatibility and to secure the TECWERK hardened, ground reducing sleeve; Metav Werkzeuge can confirm suitability for specific spindles and arrange prompt dispatch from Emmerich

Technical Data

• Article number: 2000832360NW
• Label: Reduzierhülse DIN 2185 MK5xMK3 geh.u.geschl.TECWERK
• Manufacturer: TECWERK

Facts

• Standard: DIN 2185
• Total length: 156 mm
• Inner taper: MK3
• Outer taper: MK5
• Packaging unit: 1

Special features

• Hardened and ground inside and out
• Suitable for tools with Morse taper
• Execution: hardened and ground

FAQ

What tapers does the adapter connect?
The reducing sleeve connects an outer MK5 taper to an inner MK3 taper, enabling use of MK3 shank tools in MK5-equipped spindles.

Is the sleeve suitable for high-speed spindle use?
The hardened and ground surfaces of this TECWERK reducing sleeve support stable seating; final suitability for high-speed applications should be assessed against machine spindle specifications and operating speeds.

How does the DIN 2185 standard affect compatibility?
Compliance with DIN 2185 ensures standardised dimensions and fit quality, making the adapter predictable in seating behaviour with other components manufactured to the same norm.

Will the sleeve reduce tool runout?
Accurate ground mating faces help to minimise runout by improving concentric contact between the tapers, which contributes to better machining accuracy compared with unrefined adapters.

What is the total engagement length of the sleeve?
The total length is 156 mm, providing robust engagement for reliable mechanical contact between both tapers.

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