Spherical bearing mount

egratton · Apr 6, 2018

I have the task of restoring the spherical bearing fit in some custom blocks that are integral to a larger assembly.I am in need of tooling to machine the radius back to original fit in a manual lathe.The bearing has a 52mm O.D. that is ofcourse spherical. Is there a insert or brazed tool source for getting this done. The bearing is UC205-16
Any help is appreciated.
Eric G.

RJT · Apr 6, 2018

Umm, no. Find some one with a CNC lathe. Way too much contact for this not to chatter . No idea what kind of tolerance you want to hold, but if roughing it out and file / polish it smooth is good enough,then i suppose its possible, but its an easy job for someone with the right equipment.

HuFlungDung · Apr 6, 2018

If the custom blocks are large enough, perhaps you could bore and sleeve the hole. In this case, buy the proper size pillow block housing in a 2 or 4 hole format (face flange mount) and machine the OD away to make the sleeve insert. Possibly you could retain this sleeve with a light interference fit, Loctite permanent grade and a snap ring that you would machine into the original custom block.

Welding up a cast iron housing, if that is what they are, could be problematic anyways, hard spots, warpage etc. It's not something I would want to do that way, I'd make new first.

DDoug · Apr 6, 2018

Where is that thread of the very unique radius turner that worked
as a parallelogram ?

Seems like it would be ideal for this application.

ratbldr427 · Apr 6, 2018

You can buy sockets that use spherical bearings that fit into a straight bore usually held in by snap rings.Check Morse,Dodge,SKF ect.

Spruewell · Apr 6, 2018

I agree with the idea of machining the housing out to fit a readily available pillow block housing. Those spherical fits are very important to the life and performance of those bearings. I have seen many times where a customer tried to cut corners and stick a new bearing those pillow blocks, only to ultimately have to replace the whole thing a short while later along with the shaft

ratbldr427 · Apr 7, 2018

I said sockets but should have said cartridge mount spherical bearings.If you have enough material just straight bore your old mounts leaving a shoulder in the bottom of the bore and deep enough to allow a snap ring groove on the outer end to hold the cartridge in.

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