I love my EZ-lube axels !
Who ever says it does not save time and money has evidently never used them.
I am on my second trailer with them, and grease them once a year.
Saving time: I just jack each wheel and then squirt the grease in until the old stuff comes out.
Saving money: one tube of grease will do more than four wheels:
When and if I ever have a bearing failure, I'll come back and tell you, but the first trailer was five years old when I traded it, and this one is now six years old
Jack L