ER Collets for my South Bend

Discussion in 'General Engine Discussion' started by Mosey, Nov 24, 2011.

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  1. Nov 24, 2011 #1

    Mosey

    Mosey

    Mosey

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    Would it be possible, and make any sense to make an ER 32 collet chuck to thread onto my lathe spindle?
    I have no way to grind a chuck, so it would only be turned to shape.
     
  2. Nov 24, 2011 #2

    ShedBoy

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    ER32 collets are great. I am sure it could be done. I have seen a collet chuck that was turned and lapped internally with a hardwood lap with valve grinding paste on a hercus lathe which has a thread on the lathe spindle, the body was turned from a lump of 4140 (driveshaft from a scraper free from earthmoving company bin) with same thread and register as the chuck. Yes it would make alot of sense.

    Brock
     
  3. Nov 24, 2011 #3

    ShedBoy

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  4. Nov 24, 2011 #4

    arnoldb

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    Mosey, it's absolutely possible and really worth it to make one.

    Mine (shown here on HMEM) is now pretty much the most used chuck on my lathe as I tend to make lots of little parts.

    Regards, Arnold
     
  5. Nov 24, 2011 #5

    bezalel2000

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  6. Nov 24, 2011 #6

    Blogwitch

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  7. Nov 24, 2011 #7

    bob ward

    bob ward

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  8. Nov 24, 2011 #8

    Blogwitch

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    On the one I made, I nearly got my grinder out, but found I got such a good finish hand feeding, I didn't bother.

    For anyone interested in making holders and things to swap between lathe and mill, rotary table, spindexer, 5C blocks etc.

    I showed a whole range of things being made over on modders.

    If you want, I can give all the links.

    Sorry Mosey, I'm not trying to hijack your post.


    John
     
  9. Nov 24, 2011 #9

    ttrikalin

    ttrikalin

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    links, sir john, are mucho appreciated!
    Google is my friend and I got at least some of them...

    thanks much,

    tom in MA
     
  10. Nov 24, 2011 #10

    Blogwitch

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    OK Tom,

    But don't blame me when we get warned for post hijacking.

    Hope these are worth you saving

    The start of it all

    http://madmodder.net/index.php?topic=422.msg1458#msg1458


    5MT to Myford nose

    http://madmodder.net/index.php?topic=1993.msg20614#msg20614


    5C to MT

    http://madmodder.net/index.php?topic=4758.msg52580#msg52580


    5C to R8 adaptor

    http://madmodder.net/index.php?topic=4805.msg53225#msg53225



    Plus a few other bits 'n bobs

    Lathe chuck backstop

    http://madmodder.net/index.php?topic=1649.msg22616#msg22616


    Tailstock V centre drilling head

    http://madmodder.net/index.php?topic=4792.msg53061#msg53061


    Mill vice backstop

    http://madmodder.net/index.php?topic=1007.0


    John

     
  11. Nov 24, 2011 #11

    Tin Falcon

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    Bogs :
    I am generally tolerant about posts wandering. so no worries . but. if you do not mind could you make a posting in the links area maybe call it useful tool info and post the links there easier for folks to find later.
    I try not to encourage duplicate threads or post but sometimes a Gem should not be lost.
    Tin
     
  12. Nov 24, 2011 #12

    ttrikalin

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    thanks much
     
  13. Nov 25, 2011 #13

    Mosey

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    Making a collet chuck looks like a great project. Does anyone know of a commercial 1-1/2 x 8 to ER 32 chuck? (lazy)
     
  14. Nov 25, 2011 #14

    bezalel2000

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    Hi Mosey

    Is there a particular reason you want to use the spindle thread instead of the #3 Morse taper?

    If you haven't bought the collets yet and were interested in some ER40s I could give you a Doz or so that are surplus to mt needs.
    Unfortunately I'm too stingy poor to pay the freight for you from Aus to NJ ;D

    PM me if your interested in taking the offer further.

    Bez
     
  15. Nov 25, 2011 #15

    Mosey

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    The spindle is 6K inside, proprietary to South Bend, so I cannot use 3mt. If I could, it would no isssue. Therefore the interest in 32ER, which would give full spindle bore capacity. Thanks for the kind offer..
     
  16. Nov 25, 2011 #16

    Paulsv

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    Beall Tools makes a 1 1/2 x 8 ER32 chuck. They sell it with wrenches for $83.00, which seems very reasonable. They also sell it in a set with 5 collets, but their prices on the collets are kind of high, so you would do better to buy a complete set of import ER32 collets elsewhere.

    http://www.bealltool.com/products/turning/colletchuck.php
     
  17. Nov 25, 2011 #17

    Groomengineering

    Groomengineering

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    Well, the spindle on my SB9 is 3mt. It's the screw on collet nose thats 6k.

    Any reason not to use 5c? Many chucks available with 1 1/2 - 8 backplates.

    Cheers

    Jeff

    col.png
     
  18. Nov 25, 2011 #18

    steamer

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    +1 for the 5C Get an adjust true from Bison. I have one on my Logan and it's an awesome chuck.

    Dave
     
  19. Nov 25, 2011 #19

    Mainer

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    My SB10K has the 6K taper just inside the spindle nose, but behind that it's Morse #3. Yours is almost certainly the same, otherwise you couldn't put a center in the headstock. You should be able to use Morse #3 collets if you make an appropriate drawbar. Morse collets are limited in that they don't allow stock to pass through them, however. That is likely to be mostly an inconvenience rather than a problem, but it is something to think about.

    Why not use 6K collets? (Let me guess: cost? Maximum 5/8" capacity vs. 3/4 for Morse #3?)
     
  20. Nov 25, 2011 #20

    Mosey

    Mosey

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    The only reason I don't like to use the 6K collets, is because you need to have the 64ths increments to hold numerous times. I have all of the 32nds, and 6 of the 64ths ones, but it is expensive/impossible/difficult to get the rest of them, and yes, it is usual that I need the through hole opportunity. So, I thought wouldn't it be nice to have the ER-32's, where you only need about 18 by 32nds to hold all work sizes up to the spindle bore of 5/8". I feel a little stupid for forgetting about the MT3 bore. Sorry.
     

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