These are standard, cast iron 2 bolt Flanges
There are several bearings that can be assembled with these housings: ie:
UC209 , SA209 and SB209 series
THESE ARE LIMITED TO 85 MM OD BEARINGS
These castings can be use for replacement or with new bearings. Bearings mount on the back side, inserted perpendicular to the housing, into the slot and then turned into the bearing using a pipe, until flush with the housing.
THIS IS THE HOUSING ONLY. NO BEARING IS INCLUDED.