These are standard, cast iron 4 bolt Flanges
There are several bearings that can be assembled with these housings: ie:
SA 206 and SA206 series ( locking collar), SB206 and SB206 series( set screw) singly extended inner ring bearings, flush on the other side.
UC206 series (set screw) doubly extended inner ring.
These are NOT suitable for HC206 series.
THESE ARE LIMITED TO 62MM OD BEARINGS
THIS IS THE HOUSING ONLY. NO BEARING IS INCLUDED.