TT Brake Service

trail-explorer wrote:

Here's a video on EZ-Lube hubs which pretty much sums up what Lynnmor describes above

Not a great video, if you do listen carefully what was said about the grease needing to totally fill the area between the seal and the bearing only then pushing out, you will understand the issue.

If you look carefully you will see that the rear inner race is located against the larger diameter for the seal by just a tiny amount. All of the 3500 lb. axles are made like this and is a design defect. If you want to disagree, fine, but do the measurements and the math like I did. Measure the diameter where the shoulder meets the large radius on the inner race and measure the seal surface diameter, less any small radius there. Using the blueprints with the tolerances, you can have zero ground surface contact up to just a small amount.

Also, check the diameter of the sealing surface, the surface finish and the concentricity and ask yourself if that will contain the grease.