Gallery, Projects and General > Oooops!

Stuck Collet Chuck Arbor

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Miner:
Have it pressed out at a good machine shop.

Pete

doubleboost:
Hi
Have you tried a good fitting punch and really hitting it with a propper hammer
Tapping it will only swell the end up and make it worse
Failing that it is a strip down job and press it out
I have seen people tapping things with hammers  that really need a couple of good blows
John

Miner:
OK, :Doh: One more time, I've worked in open pit mines for a long time. And I've used large and heavy duty equipment to position bearings for millwrights and mechanics that were far too heavy to be humanly lifted and put in place. These are not "precision" bearings, Just industrial grade roller and ball bearings. They are ALWAYS installed and handled very delicately. I just plugged into Google "Precision bearings and shock" A quote "100 grams of force from a distance of 4 mm can be enough to cause brinelling of the bearings".

Pete

doubleboost:
Hi
It is very simple really :bugeye: :bugeye: :bugeye:
You hit it and it comes out (it will)
Then you replace the bearings ect
Or you strip the spindle and have it pressed out (then replace the bearings)
John

lordedmond:

--- Quote from: ukazak on March 21, 2012, 06:24:58 PM ---well,
it has been more than ten days now, machine is running without the drawbar. at least 4hrs a day, up hill, down hill, fast and slow, with fly cutting, slot cutting and 16mm end mills and all... nothing hapened so far. running just as usuall. ıt just doesnt give..
unal

--- End quote ---

you need a bigger hammer hit though not at its a quick sharp clout that shifts thing not a series of taffy hammer taps , I have used a MT3 mill for years , yes the chuck that came with it was in well and needed a good dose of the manchester screwdriver ,but the mill is still OK and the bearings are still fine


Stuart

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