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Extension socket CM 6 / 5
Extension socket CM 6 / 5 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
At Krollit, we guarantee a safe and reliable shipping process. Orders are handled with the utmost care and traceability until delivery.
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Extension socket CM 6 / 5
Description
Morse taper extension sleeve CM 6/5 — MT 5 tool holder for MT 6 machine tapers. Fully hardened, internal and external taper ground according to DIN 2187. Austrian made, available from Krollit official Bernardo distributor since 2007.
- External taper: MT 6
- Internal taper: MT 5
- Standard: DIN 2187
- Processing: Fully hardened, ground taper
Logistics
Original spare parts available with 3–5 business days shipping. Customer support in Italian available.
Technical specifications
Technical specifications
| Specification | Value |
|---|---|
| External taper (machine) | MT 6 |
| Internal taper (tool) | MT 5 |
| Standard | DIN 2187 |
| Processing | Fully hardened, ground taper |
Warranty
Warranty terms and support procedures are available on the dedicated Krollit page.
View Krollit warranty termsFAQ / Frequently asked questions
Frequently asked questions
What is a CM 6/5 extension sleeve for and when is it needed?
The CM 6/5 extension sleeve has an MT 6 external taper (fits into the machine) and an MT 5 internal taper (holds the tool). It allows mounting tools with an MT 5 Morse taper shank on machines with an MT 6 Morse taper seat — the larger number is the machine taper, the smaller is the tool taper. The extension sleeve allows the smaller tool to fill the larger seat, maintaining DIN 2187 concentricity.
Difference between extension sleeve and reduction sleeve?
An extension sleeve brings a smaller taper (tool) into a larger seat (machine): CM 6/5 → the machine has MT 6, the tool has MT 5. A reduction sleeve does the opposite — it brings a larger taper into a smaller seat. They are not interchangeable. Always check which one you need before purchasing.
How do you remove the sleeve from the Morse taper seat?
Using the knockout pin (drawbar) that slides through the spindle hole: insert the pin from the opposite side and strike 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 business days shipping. Customer support in Italian available.
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