{"id":4224,"date":"2019-03-31T23:49:17","date_gmt":"2019-04-01T02:49:17","guid":{"rendered":"https:\/\/tangopardo.com.ar\/2cf7\/?p=4224"},"modified":"2019-04-03T20:56:30","modified_gmt":"2019-04-03T23:56:30","slug":"repairing-an-albrecht-chuck","status":"publish","type":"post","link":"https:\/\/tangopardo.com.ar\/2cf7\/2019\/03\/31\/repairing-an-albrecht-chuck","title":{"rendered":"Repairing an Albrecht chuck"},"content":{"rendered":"\n

Long time ago I was waiting for my turn to use the weighting scale on a scrapyard when I stepped over something curious.<\/p>\n\n\n\n

Inside a sturdy chunk of mud there were the remains of an electric drill but what got my attention was the keyless chuck. I asked at the counter and got it for free.<\/p>\n\n\n\n

It slept for some time on a shelf until I found it again cleaning. It resisted a civilized dismantling intent so I bathed it overnight in a mix of gasoline and paint thinner.<\/p>\n\n\n\n

The front came out easily and looked good enough given it’s history except for a couple of spots with tool wounds and corrosion with significant missing iron. Seems it had been passivated on the inside.<\/p>\n\n\n\n

There’s a two hole pig nut on the back and that one gave more trouble. I first tried with a round nose pliers and then a punch but it only made things worse.<\/p>\n\n\n\n

I used a heat gun to clear any remnant of gasoline, hoping that it would loose the threads but no cigar. So I welded a piece of scrap and with that I managed to pry it.<\/p>\n\n\n\n

Compared to the rest this part looked much better. I expected a ball bearing but there was only a hardened steel ring instead.<\/p>\n\n\n\n

I padded a couple of beads on the body and after a bit of careful grinding it’s like it never spent time buried.<\/p>\n\n\n\n

Now I only have to fix the horrible amount of run-out and play of the drill press.
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