morse cone removal

[ranald]

you could try to hold the flat part (on the end of the morse taper , may have to grint it flatter) and try to unscrew the chuck. take a note that, as i posted elsewhere,that a screw may be epoxied into the morsetaper holding the chuck in place so it doesn't come off by accident so heat may be required for removal of screw. also take note of the other advice to clean up any burrs as that may be the cause of it not running true before taking any drastic action like grinding and/or welding.

[bigtrev8xl]

A picture/photograph would help

[olderdan]

All previous advice is relevant and should be considered.
The picture I posted was of a precision keyless chuck in my case an ALBRECHT but other brands will be the same fitting.
If you do see a screw at the bottom the chuck will likely be from a reversing power tool, the screw will be a left hand thread and is there to prevent the chuck from UNSCREWING from the arbor, the head of this screw will almost certainly need drilling off, my tip is to use a piece of tube in the chuck to protect the jaws and the drill bit while doing so. I have never seen a chuck of this type fitted to a No 3 Morse taper arbor but with second hand machinery anything is possible. On that note I have seen arbors that have been bent as they are case hardened only.