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ER32 ballbearing nut

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  • ER32 ballbearing nut

    Hi All,
    Just seen this on fleabayhttp://cgi.ebay.co.uk/ER32-collet-ch...QQcmdZViewItem
    I asked them a question as to why the ball bearing and their reply was that it increases the pressure on the collet by some 25%. My thoughts are is this wise surely the angles in the collet have been designed to be adequate and if you exceed them you may harm the chuck.
    Any other thoughts!!
    peter
    I have tools I don't know how to use!!

  • #2
    Peter,

    I have an ER32 collet set, and (especially with the smaller size collets) it takes a lot of tightening of the nut to get an adequate grip. If this nut eliminates one source of friction, it looks like a good idea to me!

    Regards,

    Ian
    All of the gear, no idea...

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    • #3
      Originally posted by ptjw7uk
      Hi All,
      Just seen this on fleabayhttp://cgi.ebay.co.uk/ER32-collet-ch...QQcmdZViewItem
      My thoughts are is this wise surely the angles in the collet have been designed to be adequate and if you exceed them you may harm the chuck.
      Any other thoughts!!
      peter
      I have one of these from ETM
      http://www.jlindustrial.co.uk/ETM-00016E/REC:NETPETAIL/product.html
      who make some of the best collets and have had no problems. I pressumed that if ETM were happy with it there should be no problems.

      It should make it easier to push the collet back like putting a backing ring between an o-ring and a screw in clamp.

      Steve Larner
      Last edited by SDL; 01-06-2008, 03:02 PM.

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