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Old 04-16-2010, 09:46 AM   #1
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Axle Grease Fittings used to pack bearings

Anyone out there ever drilled and added grease fittings to their axles and packed the wheel bearings this way?
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Old 04-16-2010, 09:54 AM   #2
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Anyone out there ever drilled and added grease fittings to their axles and packed the wheel bearings this way?
You are going to find that this is a controversial topic. I would not recommend doing it yourself, but check this link. Genuine Bearing Buddy Web Site
I used Bearing Buddys on my last trailer with no problem. In ten years, I never disassembled the hubs.

Here is what Airstream is putting on the new trailers, at least some of them.
Dexter Axle - Trailer Axles and Running Gear Components - Nev-R-Lube Bearings

Regards,

Ken
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Old 04-16-2010, 10:43 AM   #3
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the potential problem is overgreasing, forcing grease past the seals where it will end up on the brake shoes. While bearings should be checked and repacked from time to time, I think most suggested intervals are way too often. How often do you do this to your car?
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Old 04-16-2010, 09:44 PM   #4
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I have bearing buddies on my dual axle boat trailer. They work awesome!

If you are going in that direction do not drill the caps. Buy a bearing buddy or equivelant. There is more to it than a zerk fitting in the end of a cap. Getting air into the bearings isn't something that you want to create.

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Old 04-16-2010, 10:41 PM   #5
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I would guess u are thinkin about dexter EZ Lube axles...(Google it)

I've used them on flat bed trailers with no brakes. Squirt the rubber cap cover full of grease and it fills the bearings with lube, the excess grease goes everywhere, (and onto the brakes if I had them...).

Its not somthin I would consider tweekin my onto my trailer.
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Old 04-17-2010, 08:09 AM   #6
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Almost all new SOB's I deliver from manufacturers to dealers have grease fittings built in.

Godspeed,
Trent
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Old 04-17-2010, 11:22 AM   #7
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I've used bearing buddies on our boat trailer for twenty years or so... they do work very well in that application, esp. since our boat trailer doesn't have brakes (it's light). However, these units do keep a slight positive pressure on the grease in the wheel, and if the rear seal isn't perfect, you'll get grease on your (drum) brakes. With disk brakes this should be much less of an issue.

I'm not sure why maintenance intervals are so short on trailer hubs...but I always make sure that the bearings aren't set up tight, and have had no bearing problems once we started using bearing buddies.

Since we're fitting new axles w/ disk brakes to our AS, I'll think about using bearing buddies as well....

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Old 04-18-2010, 03:14 PM   #8
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Thanks all Bearing Buddies seems to be the way to go. Wonder if they will work on 1959 dual axels
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Old 04-18-2010, 05:12 PM   #9
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The Hayes axle I installed on or Caravel came with a drilled axle stub and fitting. Even being careful, the grease got by on of the seals. After cleaning everything, I now pack my bearings the good old fashioned way. You have no way to see just how much grease is getting into the inside bearing. Also, the old, dirty grease remains in the hub.

Not my cup of tea.
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Old 04-18-2010, 06:13 PM   #10
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Thanks all Bearing Buddies seems to be the way to go. Wonder if they will work on 1959 dual axels
If I can offer a suggestion - go down to the local Marina or boat dock when everyone is out running their trailerable boats. Walk around to the trailers and see who has Bearing Buddies and look at the inside of the tire. I bet you will see a huge number of them have grease slung all over the place. On a electrice braked trailer, all that grease ends up in the drum. It DOES make the brakes last longer but they really don't have the desired effect of stopping the trailer....
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Old 04-18-2010, 06:13 PM   #11
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Thanks all Bearing Buddies seems to be the way to go. Wonder if they will work on 1959 dual axels
Note there is a user factor in applying grease to these bearing covers. Operator error can create damage when the operator was attempting to reduce damage.

Too little and the bearings will fail.

Too much and grease will be force out on to the inside of the drum. Pump in even more grease and it will force out the grease seal. So this is a case of more is not better. More can be worse!

The correct amount and the grease will always be forced into the bearings. This situation will serve you for a very long time. Do read the instructions when making this installation.

I have a dual axle boat trailer with drum brakes on all 4 wheels. Grease does not get on the inside of those drums because I install enough grease for the bearing buddy to work and not too much so as to get past the wheel seal.

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Old 04-19-2010, 08:34 AM   #12
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Everyone thanks for help. Bearing Buddies it will be.
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Old 04-19-2010, 03:48 PM   #13
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Bearing Buddies (BB) are designed for boat trailers, because the hubs get submerged when launching the boat. The bearings and hubs are relatively hot at launch, and when they hit the cold water, the temperature change causes the grease, seals, etc. to contract, which causes a slight vacuum that sucks water into the bearings. That's why they have a spring inside the BB assembly to maintain positive pressure on the grease inside the hub -- to keep water out.

Unless you back your Airstream into deep water and submerge the hubs, BBs are completely unnecessary. Boats put up with the excess grease mess, because that's the better alternative to driving around with water in your bearings.

I personally would rather hand-pack the wheel bearings so I can inspect them, rather than just keep squirting grease in the fittings and hoping for the best.

Just my opinion...
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