Originally Posted by linkbelt
Have had the same bearings for 20 years on my 27 ft 5th wheel.
Have pulled it mroe than 20,000 miles. Remove bearings each year, wash bearings in gas, dry bearings, , force in new grease, adjust brakes. That's all!
Don't follow what I do, but. it works for me. Just my $0.02.
That is an interesting data point.
Let's see. My 1985 boat trailer = 30 years old. Original bearings still in service. Stored outside over NE winters.
3500# rated axle. Approx. 2800# gross weight w/ boat
Conservatively 60,000+ miles towed (No dunking. Jib crane launch.)
5 year service interval = 5 service operations to date.
1 year interval (would have) = 29 service operations.
Somewhat unrelated as to vehicle type, but still individual tapered roller wheel bearings (not a sealed hub assembly):
2004 van front bearings.
Inner bearings = 285,000 miles to date.
Outer bearings = Replaced at 226,000 miles
The last 5 year interval visual inspection revealed a shadow on the outer bearing races that I didn't like. The outer bearings (smaller in size than the inners. Stamped made in some emerging country) were changed to Made in Germany replacements. The inners (larger size, Made in Germany) looked excellent. I applied "Devil you know" so the inners were left in service.
I haven't needed to deal with a bearing failure ever using my 5 year interval service program. (knock, touch wood)
My earlier comment wasn't really accurate. So I revised it.
Originally Posted by VicS1950
... Strike "If I" - insert Were I to ever notice a bearing getting consistently too warm I would then step up my service schedule. I have yet to need to change my 5 year service interval. That method has worked for me for decades now.
Someone doing their own service may find annual bearing R&R for repack worth the effort. I wouldn't have wanted to pay professionals for 29 bearing service operations on my boat trailer at about 75+ bucks for single axle repack.
Maybe my 5 year plan is too radical for some?
Even increasing from annual to a 3 year interval reduces my possible 29 (as recommended by others) annual service operations down to 9.5. A significant savings. Even more savings are gained for a TT double axle professional repack at maybe 150+ bucks.
Of course type of use figures in. If the trailer sees a bunch of secondary roads, stream crossings, etc. then maybe an annual service is necessary. 5 years and monitoring trailer hub temperatures has worked for me so I'm pretty certain that 3 years would work well for most typical highway travelers. But... that's just my opinion.