Parker Majestic #2 surface grinder

[DavidR8]

Ok. Thanks Dave. I think I am going to have to make a bushing for mine.

EDIT: I looked for Loctite 77 Ultra Blue. Permatex makes a 77 Ultra Blue. It is just blue silicone that is very resistant to oils.
--->Here is the linky<--- to it, although I would not buy it from Fastenal.

If you get a moment I'd sure appreciate seeing what the handle looks like.
Thanks for the info on the 77Ultra Blue. I had some on hand so didn't really think about it.

 

[7milesup]

I will do that tomorrow Dave. Late here. I'm calling it a day.

 

[DavidR8]

I will do that tomorrow Dave. Late here. I'm calling it a day.

Sounds good
Have great night.

 

[7milesup]

Hi Dave. Here are some pictures of the handle. Your magnetic chuck is apparenty a little different than mine. Mine is 8 in by 15 in.
It looks like they added up block on to yours where the handle is. I'm assuming the hole where the handle passes through was worn.

 

[7milesup]

I see that your way oiling is accomplished the same way as my Bridgeport, which I find interesting. The oil wells on mine were not bad on my longitudinal travel but the lateral travel (Y axis) were all bunked up and the oil passages were clogged.
Of course the manual calls for Vactra #1 and all I have is Vactra #2. I wonder if I could use #2 or some other handy alternative to #1.

 

[Cadillac]

I’ve rebuilt acouple mag chucks that I’ve purchased. Between water getting in rusting the plates and no grease or oil the linkages got pretty beat up on mine. Went through cleaned all the surfaces, made a new linkage piece because the oblong holes shortened the throw of the magnet alignment to the top plate. Also made a new bushing for arm. That where I beleive water/coolant was getting in. So after boring bushing I cut a oring groove on the ID of bushing to seal shaft from coolant. After making the new parts I coated all parts in a thin layer of grease and reassembled. Here’s some pics I took the first is a 6x12 bad links and bushing this design slides the mag plate along the top plate no separation.



The second is a suburban 6x6 compound angle mag chuck. Same problem tough to engage and sloppy linkage. So I disassembled cleaned all the rust out of it. Stoned all the surfaces. I didn’t have to make anything the chuck was in good shape except the rust. This design pivots the mag plate off the top plate not sliding it. Definately more of a snap when engaged.

I’ve read that on some older chucks separating the mag plate from the top plate can reverse polarity on magnets. I think this is on the powdered type of magnets. Idk
The three that I’ve taken apart had newer type of coated magnets and all worked perfect once gone through. I haven’t yet but once together the top and bottom of chuck should be checked and ground for flatness and parrallelism.

 

[DavidR8]

I see that your way oiling is accomplished the same way as my Bridgeport, which I find interesting. The oil wells on mine were not bad on my longitudinal travel but the lateral travel (Y axis) were all bunked up and the oil passages were clogged.
Of course the manual calls for Vactra #1 and all I have is Vactra #2. I wonder if I could use #2 or some other handy alternative to #1.

I'm not sure if you could or not. I think I'd look at the specs for them and see what the differences are.
Thanks very much for the photos, they are very helpful.

 

[DavidR8]

Thanks for the pics @Cadillac, I was nervous about disassembling mine but when I got it apart I was surprised by how simple it was.

 

[7milesup]

You're welcome Dave.
Interesting Cadillac. after seeing some of your guy's chucks, I think mine is in pretty good shape.
I just turned a bronze bushing to take the slop out of my linkage.

 

[Liljoebrshooter]

I have almost the same picture as cadillac. My linkage was worn so much the magnet would not release.
Joe