Williams and Hussey W-7 bearings

[Jack Wilson]

If they are contained INSIDE the gear case, then do they run in a oil bath of gear oil? If so, then you don't want them sealed.

This is a good point. The one I removed was just Z, but it was so beat up that I thought the seal was just beat to hell. AND, it's not been able to hold oil since I got it, so I have a new gasket on the way. You think I should remove a seal? I don't use it but once a year for a few board feet. Right now I need to run 10 BF of 6" crown to match a project I'm working on for a client with an OLD house.

[David Kumm]

Shields and seals are different. Z is a shield which is metal and non contact so oil will penetrate easily and grease will also to a lesser extent. They run cooler and have less friction than a contact seal which is usually designated R or RS. Oil will penetrate some but generally grease will not go in or come out. Dave

[Jack Wilson]

I'll be using gear oil, so I should be good then. Thank you!