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  #11  
Old 09-21-2016, 02:59 PM
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Shade Tree Welder Shade Tree Welder is offline
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Quote:
Originally Posted by GWIZ View Post
Looks like you need a large shoulder.
http://www.jacobschuck.com/drill-chuck-removal-guide
Good link Wiz.

Tackit, you don't have a shoulder, so you can not use wedges to remove it.

From the link above.

Quote:
In case the mounting taper of the arbor does not provide a shoulder, a cross hole should be drilled through the neck of the arbor (illus. D.) and a cross pin inserted. Then the wedges can be used between the chuck back and the cross pin. If desired, a hole may be drilled through the soft center portion of the chuck body (Illus. D.), and a pin may then be used with an arbor press to force the arbor out of the chuck.
See the link for the pictures. Personally I would do the second option and
drill a pilot hole through the center of the chuck and drive the arbor out.
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  #12  
Old 09-21-2016, 05:23 PM
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Quote:
Originally Posted by Shade Tree Welder View Post
Personally I would do the second option and drill a pilot hole through the center of the chuck and drive the arbor out.
That's what I had to do to get the old MT4/JT5 arbor out of if my Jacobs 30N.
It really isn't difficult to do & doesn't hurt the chuck.
Once you drill through the top of the chuck the arbor should pop right out with a punch.
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  #13  
Old 09-21-2016, 06:05 PM
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Thanks fellas, I learn something new everyday around here. OK, tomorrow I'll drill a hole down the center of the chuck and use a suitable size pin punch to force the arbor out. My hip went out this afternoon or I would have done it already. I must have been sitting on it wrong again, it feels like a nail gun shot to the hip when I get up from the chair or move a certain way.
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  #14  
Old 09-21-2016, 06:29 PM
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Randyjaco Randyjaco is offline
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I made my own out of CRS. They have worked fine for several chucks.
Randy
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  #15  
Old 09-21-2016, 07:08 PM
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Randy I was tempted to open up the #2 wedges on the mill to fit my arbor, but after learning my chuck doesn't have a proper shoulder to use wedges I'm going to pass on the idea.
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  #16  
Old 09-21-2016, 10:50 PM
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Quote:
Originally Posted by tackit View Post
Randy I was tempted to open up the #2 wedges on the mill to fit my arbor, but after learning my chuck doesn't have a proper shoulder to use wedges I'm going to pass on the idea.
It is the arbor that needs the shoulder.
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  #17  
Old 09-22-2016, 06:39 AM
Lew Hartswick Lew Hartswick is offline
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Check the size 6 . The numbers DON'T go by size. We have a "set" of 1,2,3,6 at school and the number has nothing to do with the size. :-)
...lew...
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  #18  
Old 09-22-2016, 06:46 PM
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Okay then, how about opening up the chuck jaws and drill a 1/4 "-5/16" hole through the bottom of the chuck. Then with an appropriate drift press or hammer out the arbor. A little Kroll or penetrating oil wouldn't hurt. Should have no negative effect on the chuck.

Randy
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