Not for a combine actually, but for a 40-year old gravity grain spreader in a bin (not sure of the mfgr.)...
The bearing's ID is 3/4" but it's outer dimension is the same as for a 7/8" ID bearing....in other words, the outer curved race needs to fit a 52 mm. flange--the size that would fit a standard 7/8" bearing.
What's a good place to look for odd-sized bearings?