Quote: Dodgem - I'm not sure what you mean by "sealed" but you can probably get away with it ...
If it is just roller tipped and not full roller (i.e. bushed) then the orientation matters. If it is a full roller rocker (i.e. Harland Sharp) then there is a roller bearing all the way around. Where the hole is in the shaft shouldn't matter with a full roller rocker.
