Pilot bearing for Pushbutton Panteras

This shows the the adapter removed from crankshaft. It is resting on the pilot bearing for the photo.

Here ya go, Steve. It's the same bearing that's in my pics that you posted above.

John

I also have a photo (somewhere!) that shows the flange end of a crank with the entire 'adapter' made of bronze into an extended bushing, thus doing away with the roller bearing!

The machined adapter and bushing sound great right about now. I mangled my new pilot bearing when trying to install it. Fortunately the pilot bearings are cheap and I will try again tomorrow.

how much "press" fit?

There was definitely too much press fit. I fabricated a simple press from 1/8 angle iron and used the flywheel bolts holes to turn the bearing in. The angle iron began to bend so I helped back into place with a hammer and that was it for the bearing. I went to Wilkinson's this morning for a new bearing. This time I filed out the adapter rim, fabricated a new press from 1/4" aluminum, , froze the bearing and greased it, heated the adapter with MAP gas, and tried again. My new and improved press also started to bend so I hit it as well with a hammer while cringing. This time the bearing started to go in. All is well now.

have you tried the bearing now that it is pressed in to see how the rollers "feel" spinning on the ZF's input shaft. might even observe if the hub is not wobbling and is spinning on center