ER32 Chuck Problem

  1. fizzy Forum Supporter

    Messages:
    5,086
    uk
    Well I bought one the Chinese offerings off Ebay for £65. Looks the same as all the others people are selling. Quality seems ok but the nut just doesn't grip many threads when you insert a collet. Just about grips in fact so would be very easy to cross thread it. Almost as if the collet is too long for the chuck. Any ideas?
     
  2. eLuSiVeMiTe

    eLuSiVeMiTe Forum Supporter

    Messages:
    9,941
    Location:
    Bedfordshire England
    Make a new nut.

    Half the stuff I bought from China is like that. Some re machining /fettling required.
     
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  3. MattH

    MattH Member

    Messages:
    3,651
    Location:
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    Sorry to point out the obvious here but you are seating the collet in the ecentric ring within the nut aren’t you?
     
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  4. fizzy Forum Supporter

    Messages:
    5,086
    uk
    [​IMG]

    This is the kind of thing. Yes screws up nice and tight with no collet but once you add one the threads are barely gripping. Others I have seen on Youtube tests seem to screw up more than just a fraction.
     
  5. fizzy Forum Supporter

    Messages:
    5,086
    uk
    Err umm not sure.
    Just drop the collet in and screw it up. Would that have the same effect? Possibly not :scared:
    Much prefer the Clarkson even though I only have one collet and one cutter!
     
  6. MattH

    MattH Member

    Messages:
    3,651
    Location:
    Bristol
    The collet needs to be snapped into the nut before screwing both into the holder. The nut will retain the collet.
    You then have to put sideways pressure on the collet to release it from the nut.

    The ecentric ring within the nut is what breaks the taper when unscrewing the collet.
     
  7. fizzy Forum Supporter

    Messages:
    5,086
    uk
    :ashamed::ashamed::ashamed::ashamed::ashamed::ashamed::ashamed:

    Doh - in fairness the warehouse lights were off until I fixed the switch.

    :doh:
     
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  8. skotl

    skotl Forum Supporter

    Messages:
    6,667
    Location:
    Edinburgh, UK
    I had exactly the same problem - ordered an ER32 MT3 chuck and a bunch of collets, couldn't get the nut to screw on when fitting a collet. I contacted the Chinese seller and they apologised and gave me a £5 credit so I could buy a new nut - bought one off ebay for £3.99, which was exactly the same.

    Then I realised my error, that it's an eccentric fit and you click the collet into the nut and then screw it to the holder. Oops :ashamed:

    Feel a bit bad at getting the £5 credit for the original set, but...:dontknow:
     
  9. fizzy Forum Supporter

    Messages:
    5,086
    uk
    So happy I am not the only idiot out there!
    Never felt such a fool.
    Ahh well even as you get older you can still learn something every day!
    This forum is so useful be lost without it.
     
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  10. dobbslc

    dobbslc Forum Supporter

    Messages:
    4,691
    Location:
    Hertfordshire UK
    I looked into mine and thought it had been machined badly when I saw the off centre ring...:ashamed::doh:
     
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  11. slim_boy_fat

    slim_boy_fat Forum Supporter

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  12. addjunkie

    addjunkie Member

    Messages:
    5,449
    Location:
    Northumberland. Reet oot in the sticks
    Snap..
     
  13. fizzy Forum Supporter

    Messages:
    5,086
    uk
    I have watched several videos on the subject - they go to great lengths checking runout etc but I couldn't see anywhere where they actually showed you how to use it! Probably too obvious lol.
     
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  14. MattH

    MattH Member

    Messages:
    3,651
    Location:
    Bristol
    1.gif 2.gif 3.gif
     
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  15. slim_boy_fat

    slim_boy_fat Forum Supporter

    Apologies lads, I've just tried mine and it took a few goes to get the knack.....:ashamed:
    Either @doubleboost made it look soooo easy, or I've got weak fingers. :laughing:
     
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  16. fizzy Forum Supporter

    Messages:
    5,086
    uk
    Well after Matt pointed out what a Wally I was I tried it earlier and it is so simple.
    Just pop it into place and it clicks. Twist it to remove - no effort at all.
    Quite happy with it now.
    I haven't checked runout yet - now where on Earth did I put that DTI?
     
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  17. MattH

    MattH Member

    Messages:
    3,651
    Location:
    Bristol
    We’ve all done it. Only a few members on here are perfect and most of those have been bannned as they couldn’t provide pics to prove it! ;)
     
  18. slim_boy_fat

    slim_boy_fat Forum Supporter

    I'm not falling for that one! :D
     
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  19. skotl

    skotl Forum Supporter

    Messages:
    6,667
    Location:
    Edinburgh, UK
    :clapping:
     
  20. RichardM Member

    Come on guys even I got mine right first time!

    :rolleyes:
     
    slim_boy_fat likes this.
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