BX Bearings

[Speed25]

Found three 6.00mm balls on the concrete in front of the BX. I haven't had any other equipment in or out that I can remember, so instinctively, I'm worried about it being the BX since it's pretty new to me.

What bearings are in the tractor? The balls are too big to be from hydraulic fittings, and all of those look good. The BX has a mower deck under it, but everything looks okay with a quick inspection. Took it out to mow a bit and it was smooth and quiet. The 6205 spindle bearings use 8mm balls, so those don't seem to be an issue.
What other bearings should I be checking out?

Might not be from the BX at all, but I want to rule it out before looking elsewhere.

 

[Mountainman]

I can't think of anything off the top of my head that has bearings but isn't sealed inside a case or something other than the carrier bearing. The propeller shaft has balls in the couplers. Plus 3 balls missing you'd probably know it. I could be wrong but I'm thinking it didn't come from the bx

 

[Speed25]

After doing some more digging, I'm thinking they're from one of the wheels on the loader dolly.

 

[ehenry]

I was going to say from the propeller shaft cv-joints but those look too shiny new to be them.