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Bernardo  |  SKU: 24-1054

Extension socket CM 6 / 3

€134,44 (22% VAT incl.)
Business solution up to 30 installments

Delivery and Shipping

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Description

Morse taper extension sleeve MT 6/3 — tool holder MT 3 in machine seats MT 6. Fully hardened, internal and external taper ground according to DIN 2187. Made in Austria, in the Krollit catalog since 2007 as an official Bernardo distributor.

  • External taper: MT 6
  • Internal taper: MT 3
  • Standard: DIN 2187
  • Processing: Fully hardened, ground taper

Technical specifications

Specification Value
External taper (machine) MT 6
Internal taper (tool) MT 3
Standard DIN 2187
Processing Fully hardened, ground taper

Logistics

Original spare parts available with 3-5 working days shipping. Customer support in Italian available.

Frequently asked questions

What is a MT 6/3 extension sleeve used for and when is it necessary?

The MT 6/3 extension sleeve has an external taper MT 6 (fits into the machine) and an internal taper MT 3 (holds the tool). It allows mounting tools with an MT 3 Morse taper shank on machines with an MT 6 Morse taper seat — the larger number is the machine's taper, the smaller is the tool's taper. The extension sleeve allows the smaller tool to fill the larger seat, maintaining DIN 2187 concentricity.

Difference between an extension sleeve and a reduction sleeve?

An extension sleeve takes a smaller taper (tool) into a larger seat (machine): MT 6/3 → the machine has MT 6, the tool has MT 3. A reduction sleeve does the opposite — it takes a larger taper into a smaller seat. They are not interchangeable. Always check which one you need before purchasing.

How to remove the sleeve from the Morse taper seat?

With the ejector pin (drawbar) that runs through the spindle bore: insert the pin from the opposite side and tap with a hammer. Alternatively, use the flat extraction wedge inserted into the spindle slot. Never force it with improvised tools — the Morse taper is self-locking and lateral force can damage the seat.

Delivery times?

Original spare parts available with 3-5 working days shipping. Customer support in Italian available.

Product safety

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