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Taig Headstock With Er32 Spindle

Discussion in 'SHERLINE, TAIG, TITAN & SIEG MINI-MACHINES' started by Punisher 67, Apr 21, 2015.

  1. Punisher 67

    Punisher 67 Canada Steel Registered Member

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    Has anyone bought or converted a Taig headstock to ER32 Collet
    I am just sourcing the parts and will post results once finished .

    Could have bought this but I think making one would be cheaper ,
    I also want to integrate the factory 6 step pulley on to the conversion .

    http://bb6corp.com/shop/taig-lathe-accessories/taig-er32-spindle-headstock/

    ER32 Spindle - http://www.ebay.com/itm/161144619245?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT.

    Factory bearings are 40mm in dia I will have to line bore the head to 42mm to accommodate
    the 25mm x 42mm bearings to fit spindle , the sky is the limit when getting bearings - these can
    be as cheep as $3.00 all the way up to $150.00 for full ceramics .

    http://www.ebay.com/itm/6905-2RS-AB-Alternator-Bearing-25x42x9-Sealed-Ball-Bearings-17244/360738233400?_trksid=p2047675.c100005.m1851&_trkparms=aid=222007&algo=SIC.MBE&ao=1&asc=30242&meid=f9a1c0177c0a4eb9b84cf5ec9b6d27d8&pid=100005&rk=3&rkt=6&sd=400572460605&rt=nc
     
  2. Dracen knights

    Dracen knights United States Active Member Active Member

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    this is a great idea.... I'll have to do something close.
     
  3. Jim Nunn

    Jim Nunn United States Steel Registered Member

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    Looks like a fun project.

    Not all ball bearings are created equal I would consider using ABEC 5, 7 rated bearings for spindles .. try to find some reasonable priced NTN, Koyo ,NMB or SKF bearings. There is a lot of poor quality bearings in the market that very often do not meet specifications

    info on bearing ratings

    http://en.wikipedia.org/wiki/ABEC_scale

    http://www.nmbtc.com/bearings/abec-bearings-information/

    Ceramics are mostly used in extreme high speed applications for spindles/motors operating in the 25000 to 36000 RPM range. you would find them subject to cracking on a lathe spindle if you are making interrupted cuts. ceramics are also used in motors to interrupt the eddy currents between the rotor and frame of the motor when used on inverters
     
  4. Punisher 67

    Punisher 67 Canada Steel Registered Member

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    All-righty its done and here are the pictures on how I approached this , I had to use the Taig bearing spacer as a adapter to fasten the headstock to the 4 axis to mill the new 42mm bearing slots .

    0005.jpg 0006.jpg 0007.jpg 0008.jpg 0009.jpg 0010.jpg 0011.jpg 0012.jpg
     
  5. Punisher 67

    Punisher 67 Canada Steel Registered Member

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    The rest of the pictures and the ER32 chuck mounted on my CNC Taig lathe

    0013.jpg 0014.jpg 0015.jpg 0016.jpg 0017.jpg 0018.jpg 0019.jpg 0020.jpg
     
  6. mikey

    mikey Active User H-M Supporter-Premium

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    Very cool mod! What kind of run out are you getting with this set up?
     
  7. Punisher 67

    Punisher 67 Canada Steel Registered Member

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    If I am reading this right its 1.5/1000 at a span of 3 inches but I can live with that and I have yet to check the horizontal . most everything
    I machine with the ER32 won't extend past one inch as you can see in this video . And I can shim the head with shimstock to get it absolute dead on .



    0021.jpg 0022.jpg
     
  8. mikey

    mikey Active User H-M Supporter-Premium

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    That has got to be one of the coolest Taig set ups I've ever seen! Very nice! Congratulations - this is the first headstock mod I've seen on a Taig and you pulled it off brilliantly.

    Sherlinecollet.com does something very similar on a Sherline headstock but you can buy a new Sherline lathe for what their highest quality ER-32 headstock costs.
     
  9. Dracen knights

    Dracen knights United States Active Member Active Member

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    by chance do you have a link. or bearing info for the ones you used? I'm going to be doing a mod like this except I'm doing a drawbar quick change for my mill.
     
  10. Punisher 67

    Punisher 67 Canada Steel Registered Member

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    Mikey thank you for the nice comment - Yes I was talking to Jim Diamond from Sherlinecollet.com and just didn't have the heart
    to tell him he is way out to lunch on his prices . $387.00 for a ER32 headstock and I made mine for under $100.00 - $487.00 for a set of 18
    ER32 collets when you can buy the exact same set on ebay for $99.00 in fact you can get the full 25 piece from 1/16 to 13/16 in 1/32 incraments
    for $110.00 + $42.00 shipping . Yes buy local and enjoy getting bent over.......LOL

    Dracen Knights here is the link to the bearings.......61905-2RS1

    http://www.ebay.ca/itm/61905-2RS-Be...201?pt=LH_DefaultDomain_0&hash=item53fdaa5951

    I bought all 4 (2 per side) at our local bearing shop for under $20.00
     
  11. Punisher 67

    Punisher 67 Canada Steel Registered Member

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    The next project ( in a few weeks ) will be to do a Taig headstock to a ER25 collet system - this will be a lot easier now since I have the
    adapter made to machine the bearing slots and everything programed sitting in a file .

    ER32 to ER16 size comparison

    0023.jpg 0024.jpg
     
  12. martik777

    martik777 Canada Active User Active Member

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    I made an ER25 chuck to screw on the existing spindle threads (3/4-16?). The internal/external threads and rough taper were cut on my South Bend, then the final taper cut while mounted to the Taig spindle. ER25 sets are very cheap - approx $35 for a full set and they work well.
     

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