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Albrecht Chuck Problem

Discussion in 'MACHINE ACCESSORIES (Tables, Vises, Indexers)' started by Howardd, Nov 22, 2016.

  1. Howardd

    Howardd United States Iron Registered Member

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    I have a 1/2" Albrech keyless chuck that has less than 5 hours on it, a year and a half old. When I tried to use it today in my mill the drill bit fell out. I tried it a couple of times with the same result. A couple of times I tried to pull the bit out with a pair of pliers before starting the mill and the bit held fast.

    I brushed out the chuck to make sure the jaws were clean. Any idea what the problem outdoors be.

    Thanks

    Howard
     
  2. JimDawson

    JimDawson Global Moderator Staff Member Director

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    Are you turning the spindle backwards by chance? Is the bit bottoming out in the chuck when tightening? This can prevent proper tightening.
     
  3. mikey

    mikey Active User H-M Supporter-Premium

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    The commonest cause for an Albrecht chuck to loosen in use is oil on the spindle threads. I suggest you pull it apart and clean the threads and the threaded section of the body with lacquer thinner to remove all traces of oil.
     
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  4. Heckle and Jeckle

    Heckle and Jeckle United States Active Member Active Member

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    I would disassemble it as the very last resort. If in fact as mentioned above it is oil causing problems and it could be. And is supported because the chuck does clamp the bit, using lacquer thinner or mineral sprits, as an oil remover. Mineral sprits being preferred because it has a lubricating quality, where as lacquer thinner does not.

    Put it in a pan jaws open and facing up poor it down the hole. Bathe it with a brush, should wash out any excess oil. Once dried hose it down with some WD, let it set to drain. Not necessary to take the chuck a part, would not take the chuck apart, no reason to take the chuck apart.
     
  5. mikey

    mikey Active User H-M Supporter-Premium

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    Albrecht recommends that the spindle threads be completely oil-free for proper functioning of the chuck. In addition, there are 26 ball bearings just in front of the spindle that do require lubrication for the chuck to function properly. So, while it is certainly optional to not take the chuck apart, its actually the only way to remove oil from the part that needs to be oil-free and leave the lubrication where it needs the lubrication.
     
  6. TOOLMASTER

    TOOLMASTER you don't want to know Active Member

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    that was my first thought..they get tighter the other way..
     
  7. michelmachines

    michelmachines United Kingdom Iron Registered Member

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    You should try to reverse it and re-fix it again. It will work precisely and do its job greatly.
     
  8. Bill Gruby

    Bill Gruby United States Global Moderator Staff Member H-M Supporter-Premium

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    Here is the rebuild if needed.

    "Billy G"
     
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  9. tq60

    tq60 United States Active Member Active Member

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    Notice the tray...

    Do work in a pan or tray as you will get a surprise when opening the Chuck and the bearings depart.

    Sent from my SAMSUNG-SGH-I337Z using Tapatalk
     
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  10. Bill Gruby

    Bill Gruby United States Global Moderator Staff Member H-M Supporter-Premium

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    I use the tray also accompanied by a clear plastic bag large enough to get both hands in and work. Anything that decides to go elsewhere on its own stays in the bag where I can find it when the time comes. Haven't lost a small or large part since I started using the bag.

    "Billy G"
     
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  11. mikey

    mikey Active User H-M Supporter-Premium

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    I recall one Albrecht chuck I did - I dropped all 26 bearings on my garage floor FOUR times. If you saw my garage you would realize what a disaster this was. I found all of them with the help of a magnet on a stick but it wasn't that much fun. Whatever you can do to contain those little suckers, do it.
     
  12. tq60

    tq60 United States Active Member Active Member

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    Should have been one time...

    Sent from my SAMSUNG-SGH-I337Z using Tapatalk
     
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  13. mikey

    mikey Active User H-M Supporter-Premium

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    I've rebuilt 9 of these chucks and I was a total klutz with that one for some reason. Once I got it done and mounted on my drill press it runs with about 0.0005" of runout.
     

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