Bench Mill choices

[Oldseabee]

So Green would be better maybe. I have used Blue in the past with good results.

 

[DeadGuyAle]

Progress or not. More of a Money Pit.

Understand that statement, I'm refurbing a Clausing 4900 and at times I question the whole buying used thing When it's all done no doubt the juice will worth the squeeze.
Also have to agree that Clausing has been exceptional in responding to emails or working with me on the phone which is such a treat and somewhat unexpected these days

Thanks for taking the time to post the work being done, enjoy seeing what others are doing.
Now I have to start looking for an 82XX

Steve

 

[Aaron_W]

Progress or not. More of a Money Pit. After what I found yesterday I plan now on a complete tear down. Or at least the main table and cross table come off.
While removing the old motor I found 2 bad bearings on the belt adjusting shaft and a damaged shaft to. If I had a lathe I would make a new one. Or weld this one up and recut it on a lathe. The top bearing had heated up and the contact area for that bearing is no longer round. I think Clausing has on in stock. Oh what fun. In checking the parts diagram I found that the mill uses a total of 6 bearings that size which is a fafnier 201kdd.i got a set of 6 off ebay from one seller.

Just keep looking forward to the end product. To buy a new mill that is really comparable to what you will have when the rebuild is done, you would be looking at spending $4000-6000.

 

[Oldseabee]

I had ordered a used Baldor 1 hp dc motor. I thought i did the measurements. Must have been too many beers. Motor was delivered by FedEx. I should have refused delivery. I'm sure the shaft is bent or bearings damaged. The seller is taking it back
Way too big too. This was the bottom of the box. Is what seller told me. I have already ordered another 1hp dc but new. Got it on sale for 203 shipped free.

 

[Oldseabee]

I called FedEx today and complained about the above delivery and point blank asked that they come pick it up. They agreed and will stop by next Monday
And no charge. So I got lucky this time

 

[Oldseabee]

Well the motor issue turned out ok. It now has a Baldor 1hp that I'm getting ready to wire.
I pulled the table off, and the cross slide. Next is the knee. All bearings so far are shot. But I had purchased mot of these knowing this.
The knee lift shaft assembly is next to come off. Then the knee. Any helpful suggestions so I don't FUBAR this up? From the drawing it appears to me that I need to punch out the roll pin in the gear as I think to pull the sleeve it needs to come off.
U

 

[Oldseabee]

The knee will be off tonight. I kept looking at the diagram of the knee. There are 2 3/8x 1 in allen cap srews takes a 5/16 bit. Ran the knee all the way up. Dropped the 2 screws and removed the gib. Loose as a goose now. Now with some helpers I can lift the knee off and put it on the floor to work on. All the parts are in great condition except for the bearings. Pulling it off this way seems alot easier to me. That will leave the screw assembly sticking up like a sore thumb. Then I can remove and clean the screw too. I'll reassemble reverse of how it came apart.

 

[Aaron_W]

The knee will be off tonight. I kept looking at the diagram of the knee. There are 2 3/8x 1 in allen cap srews takes a 5/16 bit. Ran the knee all the way up. Dropped the 2 screws and removed the gib. Loose as a goose now. Now with some helpers I can lift the knee off and put it on the floor to work on. All the parts are in great condition except for the bearings. Pulling it off this way seems alot easier to me. That will leave the screw assembly sticking up like a sore thumb. Then I can remove and clean the screw too. I'll reassemble reverse of how it came apart.

One more reason these mills are popular, they are not too complicated to disassemble, and are just small enough that one person can still manage the weight of the individual components.

You are putting a lot of work into this one, but you should be good for a long time once you are finished.

 

[Oldseabee]

The knee is off. And I removed the 1/4 roll pin for the sleeve. Then sprayed with Deep Creep. Waited about 10 minutes and then using a brass hammer knocked the sleeve in about 3/4 inch to break the lockup. Then used a prybar and it came right out. Deep creep works. All the bearings are rough. But the really bad one was under the screw retainer plate. It is so dry it rattles. And it was not a sealed bearing. I'm putting a sealed bearing back in. That's enough for today.

 

[Oldseabee]

I ordered the Andrew D3 special bearing for the knee. I spoke with Clausing tech department. They couldn't recommend a replacement and no D3 in stock. Then I spoke with an engineer who is up on bearing design and uses. He said same thing. He could not come up with a direct fit alternative. The mount that the bearing sets in is a very loose fit. I also asked Clausing about that. He had no idea. And the mounting hole is not wore out. Still has paint overspray from the factory. Since I don't own a lathe I'll have a friend make me a bushing to take up the slack. The bearing engineer also said do not use a regular ball bearing. He said that a regular bearing can't hold the load placed on it by the knee, cross slide and table.