Mystery bearing bushing Monarch CK12


Aug 11, 2018
Having from back gear noise.....repaced some 6206 roller bearing on the "idle gears" and it reduced it....but just haven't gotten it to totally quiet down.
So I looked to were I think I might hear some rumbling....and find timken 1931's tapered bearing behind the plates circled below...image is not my lathe but very similar. After further investigation these certainly don't appear to be original. Could someone tell me what is suppose to be behind these plates exactly? Bushing? Bearing? THe oil cup obviously feeds it ( has a slit in the top of the round outer housing at 12 o clock. lathe part for forum circled.jpg
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