I have this no name (imported?) chuck for a while. I came with the lathe, but it was painful to use it as the taper end was cut short by the previous owner and I would not eject when tailstock was fully retracted.
One way to address the issue is obviously replace the MT2 taper, but I don’t have the wedges to loosen the Jacob taper on the chuck end. Plus, I owner a good 1/2” Jacob chuck, don’t feel like spend too much on a Jacob taper for this import chuck.
So here is my hack to get the ejection to work. The idea, might have from one of the post here, is to add a short round stock which extended the taper long enough so it will catch the center pin and push itself out. But I don’t really want to deal with “fishing” the round stock with magnet when switching to other inserts. So I decide to drill and tap a 1/4-20 hole and I then screw in a 3/4 length bolt...
Here a few pictures of the process, and the final “product”. The bolt is put on with lock-tite, in case I need a shorter taper for whatever reason. I can just remove the bolt.
Didn't really have a good way to clamp down the the taper with chuck on it. So I locked the chuck on a 3/8 mandrel, and then clamped the mandrill in a collet chuck.
Started drilling with the center drill.
After a few iteration of the drill bits, finally ended a 7/32" hole.
Tap into 1/4-20 thread, first with a starter tap in the tail stock
Completed the threading with the tap wrench.
One way to address the issue is obviously replace the MT2 taper, but I don’t have the wedges to loosen the Jacob taper on the chuck end. Plus, I owner a good 1/2” Jacob chuck, don’t feel like spend too much on a Jacob taper for this import chuck.
So here is my hack to get the ejection to work. The idea, might have from one of the post here, is to add a short round stock which extended the taper long enough so it will catch the center pin and push itself out. But I don’t really want to deal with “fishing” the round stock with magnet when switching to other inserts. So I decide to drill and tap a 1/4-20 hole and I then screw in a 3/4 length bolt...
Here a few pictures of the process, and the final “product”. The bolt is put on with lock-tite, in case I need a shorter taper for whatever reason. I can just remove the bolt.
Didn't really have a good way to clamp down the the taper with chuck on it. So I locked the chuck on a 3/8 mandrel, and then clamped the mandrill in a collet chuck.
Started drilling with the center drill.
After a few iteration of the drill bits, finally ended a 7/32" hole.
Tap into 1/4-20 thread, first with a starter tap in the tail stock
Completed the threading with the tap wrench.
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Is there no tang slot on your tailstock quill?