Hitachi M12VC owners out there? - Router Forums
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post #1 of 11 (permalink) Old 01-10-2010, 02:38 PM Thread Starter
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Default Hitachi M12VC owners out there?

I have this router and am really at the end of my rope. If you own this router can you please tell me if you have a heck of a time getting the bits out? I leave a 1/16" space. It happens in with both 1/4" and 1/2" bits every time.
i am beginning to think I have a defective router or this model is poorly designed.
what are your experiences?
Thanks
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post #2 of 11 (permalink) Old 01-10-2010, 04:31 PM
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Quote:
Originally Posted by antknee3491 View Post
I have this router and am really at the end of my rope. If you own this router can you please tell me if you have a heck of a time getting the bits out? I leave a 1/16" space. It happens in with both 1/4" and 1/2" bits every time.
i am beginning to think I have a defective router or this model is poorly designed.
what are your experiences?
Thanks
I've had one of those for almost a year, haven't had any trouble with it after I figured out it had the self-releasing collet. You loosen it with the wrench, unscrew it a couple more turns and it tightens up again. Then loosen it up some more with the wrench, the second time it frees up you should be home free.
I have seen some feedback where some were tightening the collet with the bit to far in and jamming the bit in there. Don't know if that could damage the collet permanently or not.
Good Luck.

John Schaben

The problem with experience is I usually get it immediately after I need it.
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post #3 of 11 (permalink) Old 01-10-2010, 05:37 PM Thread Starter
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Yeah, I have completely taken the nut off and still can't pull the bit out.
I have been leaving space, not seating the bit all the way in.
maybe mine is defective in some way...
Thanks
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post #4 of 11 (permalink) Old 01-10-2010, 05:54 PM
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Hi Tony

Try this,,pull your heat gun out or a good hair dryer,rap a wet rag around the shaft of the router,put the heat on the shaft ,get it hot but not to hot and rap it sharp with a wooden stick ( or brass hammer ) this should break the seal..
Once you have the bit out check the collet nut for any marks and inside of the shaft, if you see any you may want to return the router for a new one or take some steel wool and clean up both parts, the bit should side in free without the nut on if not replace it with a new one..

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Quote:
Originally Posted by antknee3491 View Post
Yeah, I have completely taken the nut off and still can't pull the bit out.
I have been leaving space, not seating the bit all the way in.
maybe mine is defective in some way...
Thanks



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post #5 of 11 (permalink) Old 01-11-2010, 10:18 AM Thread Starter
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Ok, So I was looking a router review. But I can't post the url yet (that's annoying)...

About halfway down the author describes a self-releasing collet and show a picture of one on the left. It has a white arrow pointing to the collot in the nut. The collet's lip is above the nut. Is this the way the Hitachi's is supposed to be as well? Mine was located below the nut.
Maybe this is the issue.
Thanks
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post #6 of 11 (permalink) Old 01-11-2010, 01:25 PM
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Quote:
Originally Posted by antknee3491 View Post
Ok, So I was looking a router review. But I can't post the url yet (that's annoying)...

About halfway down the author describes a self-releasing collet and show a picture of one on the left. It has a white arrow pointing to the collot in the nut. The collet's lip is above the nut. Is this the way the Hitachi's is supposed to be as well? Mine was located below the nut.
Maybe this is the issue.
Thanks
I think you're OK... To bad you can't post the URL, I would have liked to see that one.
Check the pics below:

Sorry, haven't quite mastered the photo editing but think I got close up enough. When out of the router, the collet should fit loosely but not fall out. There is a groove on the collet and a lip inside the nut. The collet just snaps in, force fit so to speak.

I just reread your original post. Happening with BOTH collets likely says there is something else going on here. Check the bore in the armature to make sure there is no trash in there that can deform the collet when it is being tightened and make sure you aren't overtightening the thing. About all I can think of off hand. I'm sure there will be some other suggestions forthcoming.
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John Schaben

The problem with experience is I usually get it immediately after I need it.

Last edited by jschaben; 01-11-2010 at 01:33 PM.
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post #7 of 11 (permalink) Old 01-11-2010, 01:55 PM Thread Starter
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ok, yours looks like the way I have it. The nut is going over the collet. I copied this picture from the link I was talking about. It is from a Triton router, but you can see the lip of the collet is actually outside of the nut (white arrow). makes sense because when you loosen the nut it pulls up the collet.

Thanks
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post #8 of 11 (permalink) Old 01-11-2010, 05:05 PM
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OK, makes sense. The lip on the Triton Collet is on the outside edge and the lip on the Hitachi is internal on the nut. I have an old Craftsman that doesn't have a lip. It uses an external e-ring on top of the collet nut to pull the collet out of the armature shaft.

John Schaben

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post #9 of 11 (permalink) Old 01-11-2010, 05:10 PM Thread Starter
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Hmmm... so how is the Hitachi supposed to work? It seems like having the collet inside the nut will jam the collet down in to the shaft...
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post #10 of 11 (permalink) Old 01-11-2010, 05:22 PM
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Originally Posted by antknee3491 View Post
Hmmm... so how is the Hitachi supposed to work? It seems like having the collet inside the nut will jam the collet down in to the shaft...
The collet is snapped into the groove inside the collet nut, should be a fair amount of play, 20-30 thousands maybe. When you torque down the nut the top of the nut forces the collet down into the taper of the armature shaft closing the collet down on the bit shank. When removing the bit, the collet will initially be tight then loosen. It will be loose until the lip on the inside of the nut contacts the edge of the groove on the collet. You need the wrench again for another half turn or so to extract the collet itself.
I'm at work right now and haven't got access to my drawing packages. Maybe someone else with sketchup or DeltaCad can do one to illustrate.

John Schaben

The problem with experience is I usually get it immediately after I need it.
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