Lubing Axle Bearings
 

I did a search, no luck. Anyone know how to lube theseAttachment 2869

They got three holes in the race but once you put them in the retainers you can't grease them.

When this bearing is in a pillar block (large equipment & HVAC systems) they have a hole in the top of the pillar for oil- maybe you need to add one on your carrier

what type of retainer, the paired plates?

They normally go into pillow blocks with oil feed or at least a Zert fitting.

They came in a kit with triangular metal plates with square holes. Can't figure where a zerk would go. I lubed them up before installing them.

I'd say they're really for pillow blocks, which have oil/grease ports and channels inside to feed the them. For this use, i guess you're looking at a regularly scheduled inspection/re-greasing ...

Just an update. I got some of the Gman bearing protectors for the axle bearings. You need to remove the metal shield from one side of the bearing and install the gman piece in its place. They are molded urethane so the od needs to be sized to fit the bearing.
Since it allowss full access to the ball bearings, I decided to pack them with hi temp grease.