Verry cool buster , good to see that you are keeping busy !!
I have never seen a bearing made like this , I always assumed that a " run bearing " ment that the bearing had run its corse and needed replaceing , but according to this
Quote:
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The expression a "run bearing" also derives from this style of bearing, since failure of lubrication will lead to heat build up due to friction in the bearing, eventually leading to the white metal liquifying and literally running out of the pillow block.
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Well it all makes sence now !!!