Suppliers sometimes incorrectly think bearings that are sealed or shielded are preferable. Recently I ordered a replacement for the input shaft bearing 6207 ZNR (shielded one side) what was sent was 6207 NR (no shield) which I suspect may permit excessive oil to flow into the cover and cause leakage at the seal.
Last edited by jgcoutts; Oct 17th, 2021 at 08:39.
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