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Old 09-13-2014, 10:04 PM   #1
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Question Service of Wheel Bearing !

Why can auto wheel bearing go so long with out service but 5th Wheel Bearings can go only about 10,000 miles with any luck ??
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Old 09-13-2014, 10:08 PM   #2
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Because they're junk? The bearings are quite a bit smaller and not of nearly the same quality as automotive bearings, all things considered.
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Old 09-14-2014, 09:11 AM   #3
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FIFTHWHEELHAULER,
First thing is that the weight that is on an automotive bearing is a lot less than a RV. Second thing is that with a vehicle, you are using it most of the time, and it is not sitting in one place. A RV is sitting in one place with the weight sitting on it, which allows the grease to get pushed out where the bearing sits with the weight on it.
Also, in the 60's the vehicle manufacturers recommended that you service the wheel bearings every 10 to 12,000 miles or yearly, whichever occurs first. This was before the late 60's early 70's when the service periods began to be extended. Advances in lubrication technology and now with sealed bearing systems have changed the service intervals.
There is now sealed bearing systems for trailer axles available that require no service. When failure occurs, you just change the whole assembly.
I hope this helps answer your questions.
Frank
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Old 09-14-2014, 10:10 AM   #4
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I would like to see oil bath bearings come back. My first tt was a 73. It had oil bath but was so old they leaked. Could not find parts so had to pack them with grease. Our new 30 ft goose neck flat bed has oil bath.
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Old 09-14-2014, 11:04 AM   #5
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Drv and others probably have tried this. They didn't do a very good job of sealing them. leaking.
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Old 09-15-2014, 07:26 PM   #6
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Drv and others probably have tried this. They didn't do a very good job of sealing them. leaking.
Strange that they can't stop them from leaking. Semi trucks use oil bath bearings.
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Old 09-16-2014, 07:27 AM   #7
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HDT use different bearings aslo. They are non serviceable. Rv manufacturers try to go the cheap way.
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Old 09-16-2014, 09:13 AM   #8
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Because they are old technology. My 60's cars need to be repacked at the same rate as the trailer.

Tech got better with vehicles.
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Old 09-16-2014, 09:18 AM   #9
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There are a lot of different answers some right some wrong. Just get them serviced.
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