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What key fits a RJ3-16H drill press chuck?

Tommacebb

Plastic
Joined
Feb 14, 2019
One of my sons recently gave me a behemoth of a bench top drill press (Central Machinery model 726). It works great but did not come
with a chuck key. The chuck is a RJ3-16H. I have looked online and it gave me several different sizes for that chuck number. Does anyone know what size key I need?

Thanks
 
The internet doesn’t know, but I like to prove I don’t know what I’m talking about, so buy a K3 key, having a 5/16” pilot hole.

Them come back and tell the internet I was wrong.

I may be wrong because the pilot hole is another diameter.

Or, the pilot hole is 5/16”, but the similarity ends there. Perhaps the other keys with 5/16” pilot holes are correct, but SteveBausch wasted $10, and should be taken to small claims court.
 








 
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