Wachuko's Boyar-Schultz Six-Twelve Surface Grinder

[extropic]

I haven't yet gotten a good look at the round piece protruding from the right side of the magnetic chuck. However, I suspect it is the control (cam shaft?) for repositioning the magnets to attract and release workpieces. Does that piece have a means to rotate it? No point in disemboweling the assembly if not necessary. I suggest trying to find a brand name and operators manual for the chuck. Some assemblies, with magnets, require special assembly/disassembly procedures to avoid loosing some magnetic strength.

 

[Cadillac]

The bent pin in question is definately a hard stop for the tables traversing. I have the same grinder but the challenger version. Your ways look great on the table and your model has replaceable ways on the machine base. Their is a manifold in the machine base that diverts/splits the oiler lines. I’d locate and follow each one to see which holes get lubed. They use gravity to oil column ways once pumped up to the bevel gears for elevation screw.

 

[NCjeeper]

Here is a cheat sheet.

 

[extropic]

Here's the catalog that contains that chart.
Download the "2023 Surface Grinding Stock Assortment_Radiac.pdf"

Radiac Catalogs

 

[pontiac428]

Eek, I'm going to repeat what @extropic said about disassembling the mag chuck. Taking them apart can kill them dead, so do a little homework before going much further.

https://www.model-engineer.co.uk/wp-content/uploads/sites/4/documents/eclipsemagneticchuckhandbook.pdf

 

[extropic]

Thanks for the Handbook John.

@wachuko , see "Servicing" under section 10 of that handbook.

 

[wachuko]

Thanks for the Handbook John.

@wachuko , see "Servicing" under section 10 of that handbook.

I haven't yet gotten a good look at the round piece protruding from the right side of the magnetic chuck. However, I suspect it is the control (cam shaft?) for repositioning the magnets to attract and release workpieces. Does that piece have a means to rotate it? No point in disemboweling the assembly if not necessary. I suggest trying to find a brand name and operators manual for the chuck. Some assemblies, with magnets, require special assembly/disassembly procedures to avoid loosing some magnetic strength.

Eek, I'm going to repeat what @extropic said about disassembling the mag chuck. Taking them apart can kill them dead, so do a little homework before going much further.

https://www.model-engineer.co.uk/wp-content/uploads/sites/4/documents/eclipsemagneticchuckhandbook.pdf

Thank you for all the help/information. I only took it apart to see if it was something simple. Once I removed the bottom plate I could see that the mechanism is a very simple one.

The issue is that it seems that whatever was used for lubrication has solidify into a shellac looking crust. I do not plan on taking apart the assembly with the magnets. This is as far as I will take it apart.

I will clean it as much as I can...see if I can dip it in a bath of degreaser... and assemble back. If it is still stuck, I will ask for recommendations on a new one. I am afraid, that with something like this, any used one that I find, I might run into the same situation...

 

[wachuko]

I put it back together. Seems to be working. I just need to make a new L-shaped handle. Tested with a HEX/Allen wrench.

 

[wnchstrtnfldvlle]

Loving this thread. Just started the teardown of my new surface grinder as well.

 

[Cadillac]

Those screw holes on the side of your chuck are for mounting a backstop rail onto the chuck. Everyone Ive ever seen is located on the column side of the grinder hence “backstop”. There is usually a side stop also which is located on the left side of chuck which is used to stop parts from getting flung off the chuck.
Both of the rails/stops should be ground in place on the grinder so they are in perfect alignment with both axis.