My Bridgeport head rebuild...was only top end now both. 2hp variable speed.

[expressline99]

I've finished uploading and notating the bushing removal and new kit install.

Vari-disc bushing replacement: http://www.hobby-machinist.com/gall...2hp-variable-speed-bushings-being-redone.595/
18 photos

Belt housing next.

Paul

 

[expressline99]

I'm not done with this. I will still finish my huge photo collection. At the moment I am making a new "sleeve shaft" for the variable speed control.. I had to cut mine off with a dremel and on top of that I was forced to cut the worm gear off of it. Then the new shafts that are available for some reason are different than my old one. The one I removed is exactly like the one in the renovating guide pictures... Apparently the one I have doesn't seem to be available. But it's a simple shaft just a little bit of time. Some turning/grinding and drill one hole. Then I can post those pictures.

So I am down to just a few parts before finishing the upper belt housing. Then the motor and remount of the head. I will get more pictures up this week.

After that I'll start a album for doing the new lead screws/nuts and taking the table apart...and the bjur oiler.

Paul

 

[expressline99]

Update:
I've finished uploading all the pictures for the lower belt housing. It's 106 pictures.
http://www.hobby-machinist.com/gall...s-2hp-belt-housing-tear-down-and-rebuild.596/

The upper part has been rebuilt. I just have to upload the photos and describe.

Paul

 

[expressline99]

Last update for today:

I uploaded and did the descriptions for the upper belt housing. 84 pictures
http://www.hobby-machinist.com/gall...upper-belt-housing-tear-down-and-rebuild.604/

Only things not included are the reassembly on to the head, installing the bearing cap, and installing the speed dial face plate. This is coming next with a separate album.

Paul

 

[expressline99]

Just checking in here. After disassembling the motor to clean everything up I decided to change the bearings while I was in there. Also, the motor "fan" had gotten smashed at some point. So several fins where missing and the top motor cover was dented thoroughly. I ordered bearings..and they are cheap for the motor. The book said 6210 for the larger bearing. It wasn't the right size. Ordered it...checked when it arrived... way too large. The bearing is a 6206 for the larger one and 6203 for the smaller end of the shaft. These are double sealed not double shielded. So buy the bearings with rubber seals on both sides. Be sure to check the numbers on yours if you plan on replacing them. The motor itself is really simple to take apart and when I get the rest of the parts this week. I'll put it all together and get the pictures posted.

Paul

 

[expressline99]

One more thing. Just for current reference of cost on new series 1 units: http://www.kneemills.com/index.asp?html=prods&catID=1

 

[expressline99]

The motor tear down and bearing replacement are done. All pictures can be found in this album. http://www.hobby-machinist.com/gall...-motor-tear-down-and-bearing-replacement.614/
73 pictures.

I'll get the rest of the belt housing reinstall uploaded soon. Then that's the end aside from mounting the head back on the unit.

Then of course I can start the table rebuild along with new screws and nuts.

Paul

 

[expressline99]

Apparently I had uploaded almost all of the belt housing install pictures. So they are done also.
http://www.hobby-machinist.com/gall...ing-lower-upper-belt-housing-on-the-head.605/

29 pictures

Paul

 

[Alittlerusty]

Someday in the distant future (I hope) I'll be looking for this post. Thx for taking the time to share.

 

[Alittlerusty]

Paul or anyone can u tell me what this screw and locknut do? My j-head varispeed is older but has it as well