Results 1 to 7 of 7
  1. #1
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    61
    Posts
    1,404

    Default Crawford Multibore Type B collets

    Gday All.
    I have 12 Crawford Multibore Type B collets that have been laying around in my shed for some time. There is also what I believe to be a retaining nut with them.
    First I thought about moving them on but today I've been thinking of maybe making a chuck for them.
    I have a nice chunk of cont cast CI that would be suitable for the body.
    So I've been searching online for a while tonight trying to find out some dimensions of a suitable chuck.
    So far all I've found is a gazillion ads for every form of collet known to man I think.
    However so far no actual dimensions of a chuck. I'll keep looking but I was wondering if anyone here had any info/leads/links etc etc.
    It wont be that hard to work out the internal sizes from the collets, but a diagram with the sizes would be nice to have a look at.
    New, these collets are big money and even used on UK ebay they start at around $90aud each.

    collets 001.jpg collet nut.jpg


    Any help would be greatly appreciated.
    peter

  2. #2
    Join Date
    Jul 2016
    Location
    Melbourne
    Age
    32
    Posts
    1,187

    Default

    Peter I use similar style pratt burnerd collets, happy to give dimensions on my chuck if it helps. Does the nut have a keyway on it?

    Sent from my SM-G973F using Tapatalk

  3. #3
    Join Date
    Sep 2012
    Location
    North Yorkshire UK
    Posts
    3,844

    Default

    Quote Originally Posted by bollie7 View Post
    Gday All.
    I have 12 Crawford Multibore Type B collets that have been laying around in my shed for some time. There is also what I believe to be a retaining nut with them.
    First I thought about moving them on but today I've been thinking of maybe making a chuck for them.
    I have a nice chunk of cont cast CI that would be suitable for the body.
    So I've been searching online for a while tonight trying to find out some dimensions of a suitable chuck.
    So far all I've found is a gazillion ads for every form of collet known to man I think.
    However so far no actual dimensions of a chuck. I'll keep looking but I was wondering if anyone here had any info/leads/links etc etc.
    It wont be that hard to work out the internal sizes from the collets, but a diagram with the sizes would be nice to have a look at.
    New, these collets are big money and even used on UK ebay they start at around $90aud each.

    collets 001.jpg collet nut.jpg


    Any help would be greatly appreciated.
    peter
    Hi Peter

    Here you go
    Collets, Crawford, 3J, Plain Bore, Multibore, Spring, Multisize
    Best Regards:
    Baron J.

  4. #4
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    61
    Posts
    1,404

    Default

    Quote Originally Posted by caskwarrior View Post
    Peter I use similar style pratt burnerd collets, happy to give dimensions on my chuck if it helps. Does the nut have a keyway on it?

    Sent from my SM-G973F using Tapatalk
    That would be great if you could do a rough sketch for me. Thanks. No rush.

    The nut I have does not have a keyway. I don't even know for sure if its the correct nut for these collets either. It was in with the collets when I got them.

    I don't know if I will even use these collets if I make a chuck for them. I just thought as I don't have any actual machining projects planned, (apart from fixing a few bits and pieces on the machines as I have been doing) it would be a good project to bring my machining skill level back up after many years of not doing any.

    peter

  5. #5
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    61
    Posts
    1,404

    Default

    Quote Originally Posted by BaronJ View Post
    Thanks. I hadn't come across that last night but I had been searching on a collet chuck rather than the collets themselves.
    Unfortunately these days, the internet is a pain when you are searching for information rather than wanting to buy something.
    peter

  6. #6
    Join Date
    Sep 2007
    Location
    Wentworth Falls NSW 2782
    Age
    73
    Posts
    115

    Default Search results

    Quote Originally Posted by bollie7 View Post
    Unfortunately these days, the internet is a pain when you are searching for information rather than wanting to buy something.
    peter
    That is partly due to Google optimizing search results towards sales.

    Try using a different search engine such as the quaintly named DuckDuckGo.

    https://duckduckgo.com/

    Findlay.

  7. #7
    Join Date
    Sep 2012
    Location
    North Yorkshire UK
    Posts
    3,844

    Default

    Hi Peter,

    Quote Originally Posted by bollie7 View Post
    Thanks. I hadn't come across that last night but I had been searching on a collet chuck rather than the collets themselves.
    Unfortunately these days, the internet is a pain when you are searching for information rather than wanting to buy something.
    peter
    If you click on the pictures you will get taken to the drawings of the collets.
    Best Regards:
    Baron J.

Similar Threads

  1. Crawford Trugrip Collet
    By ES2 in forum WANTED TO BUY
    Replies: 0
    Last Post: 30th May 2018, 07:33 AM
  2. Genuine Crawford/Dickson or Bison Toolpost/Toolholders Choice.
    By bpbuilder in forum METALWORK GENERAL
    Replies: 12
    Last Post: 15th Oct 2016, 06:51 PM
  3. Type A and Type B assets - Grays online
    By simonl in forum METALWORK GENERAL
    Replies: 38
    Last Post: 1st Oct 2014, 11:04 AM
  4. Tap (& die) holders - bar type vs t-bar type
    By TheOtherLeft in forum METALWORK GENERAL
    Replies: 26
    Last Post: 13th Apr 2011, 07:53 PM
  5. N.S.W. Clarkson Type Milling Tool holder and collets
    By Ruddy in forum METALWORK - Machinery, Equipment, MARKET
    Replies: 5
    Last Post: 8th Mar 2011, 04:04 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •