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Burnerd Multisize Collet Chuck . .

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Burnerd Multisize Collet Chuck . .

Home › Forums › Manual machine tools › Burnerd Multisize Collet Chuck . .

Viewing 4 posts - 1 through 4 (of 4 total)
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  • 30 November 2009 at 11:18 #45747
    WALLACE
    Participant
      @wallace
      Hello all.
       
      I’ve got a Burnerd Multisize collet chuck which has either been dropped from a very great height or wasn’t ground correctly in the frist place as the run out on the end of the collet taper is a couple of thou.
       
      So the question is – how or where can I get is reground  ? (and not for totally silly money . . ).
       
      I should add that the spindle end is a L00 taper.
       
      thanks.
       
      WALLACE 
       
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      30 November 2009 at 11:18 #11625
      WALLACE
      Participant
        @wallace
        30 November 2009 at 22:04 #45760
        KWIL
        Participant
          @kwil
          Sorry to see about your problem, the Multisize is a superb bit of kit as I have found.
           
          Have you tried contacting Pratt Burnerd? try msenior@600lathes.co.uk 
           
          He is the contact point for spares and may well direct you.
           
           
          15 December 2009 at 14:00 #46236
          WALLACE
          Participant
            @wallace
            Thanks for the reply !
             
            I was going to email – but thought I’d have a bit more of a play around first. . . 
             
            I turned a scrap piece of  1 1/4″ bar paralell and put the chuck onto this ‘ back to front’ if that makes sense – and measured the run out of the LOO taper end. And it was about 1/3 of a thou – so now I’m starting to think the spindle on the lathe isn’t true.
             
            Yet that appears to be the same – or possibly less. (Slightly diificult to measure around the full 360 degrees due to the locating key ).
             
            Finally, I started to wonder about the accuracy of the taper on the chuck – when ‘blued’ up, it only appears to make contact with the broadest part of the taper – there’s virtually none on the front part.
             
            All interesting (frustrating ? !) stuff !
             
            Out of curiosity – and something to aim for – does anyone know what should be the run out of say a 1″ precision ground bar held in the chuck ?   
             
            W.
              
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