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Home Workshop > Members > Forum > General Area > General > Bernerd Collets

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Bernerd Collets

Bernerd Collets

Can anyone confirm that both EC and MC collets will fit my lever operated collet chuck on my Chipmaster. I currently use EC collets but seem to remember reading that MC collets will also fit.

Martyn Harrold
13 Posts
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Re: Bernerd Collets

I'm not sure that they are supposed to fit, but I have used both types in the same chuck, apparently successfully. Why do you want to use MC? The intended benefit is the ability to hold short lengths, but then the cap forces you to have more overhang from the jaws than you want, defeating some of the benefit.


When you stop learning you start dying

Nick Kempley
533 Posts
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Re: Bernerd Collets

MC collets will fit into an EC chuck but not vice-versa without modifying the hole in the closing piece.
I bought my EC collets and then the chuck not knowing it was an MC.
A nice man from Burnerd told me that other than the hole in the closing piece the two chucks were identical and sent me a drawing so that I could modify the closing piece in situ in the chuck to maintain concentricity.
Not having any MC collets I can't guarantee that you don't need to make a reducer for the closing piece.

Phil Fern
Charge Hand
36 Posts
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