From: "PeterH" <peterh5322 at rattlebrain.com> > Some machines have Zerks, even if the bearings are sealed and cannot > be lubricated. > > This is an error, of course. I would think that, in such a case, one would not be able to force grease thru the Zerk. In which case, the maker should have subbed a plug for the Zerk. Gary