Sealed Bearing Replacement For National Trailer

Question

Question:

I have a new National trailer and it came with sealed bearings from RA Rock Solid. Im not familiar with sealed bearings and only hear that they dont need to be greased like standard hubs or often. My question now is, where can I get an additional one for a backup spare ? Does it need to be the same as the manufacturer I currently have on the trailer ? And how do I replace them when needed ? Ive looked on the internet and Im not having much luck educating myself on this type of bearing. Any help would be appreciated. Respectfully,

asked by: Charlie

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Expert Reply:

We offer three sealed bearings so you will need to take some measurements to see if they will work for you. If one of these matches the dimensions of the bearings you have then you can use it as a spare.

Our Redline Nev-R-lube Bearing # 31-73-3 measures 42mm I.D. x 76mm O.D. x 39mm wide.

For Bearing # 31-71-3, the measurements are 50mm I.D. x 84mm O.D. x 54mm wide, and bearing # 31-72-3 has a measurement of 35mm I.D. x 64mm O.D. x 37mm wide.

expert reply by: Jeffrey L

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Answer 1

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 2

In order to remove the hub/drum on your trailer you will want to first remove the spindle nut. Once the spindle nut is removed you are going to want to take a hammer and tap the outer portion of the drum as well as the hub face a few times to break…

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Answer 3

EZ Lube axles like the item #T3584F-EZ-8974 come from the factory with just a little bit of grease in the bearings. The first time you use the EZ Lube feature to fill the axle, it will take a lot of grease. You will probably use 3/4 to a full tube…

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Answer 4

Your bolt pattern of 8 on 6-1/2 is a huge help. You will want the 50MM Nev-R-Lube Bearing for 8,000-lb Dexter Axles - Qty 1 #31-71-3. The 42MM Nev-R-Lube 42MM x 76MM x 39MM #31-73-3 is only a fit for 6 on 5-1/2 inch bolt patterns, and the 35MM…

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Answer 5

I have confirmed with my contacts at Redline and the manufacturer of this bearing is indeed made by Timken, and that is what you will receive when ordered. This bearing fits the Dexter 50mm Nev-R-Lube axle with 8-lug, 6-1/2 bolt circle. It is…

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Answer 6

Dexter Nev-R-Lube Bearings such as the 50MM #31-71-3 do not have a specific maintenance or replacement schedule. These are pre-lubricated at the factory, which will make it resistant to contamination, and sealed for life so there is typically no…

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Answer 7

We currently offer the Dexter Nev-R-Lube Bearings in a few different sizes, 35MM part #31-72-3, 42MM part #31-73-3, or 50MM part #31-71-3. Please note, these are referring to the inner diameter of the bearing. In order to find the correct one you can…

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Answer 8

In order to pick out the correct Nev-R-Lube bearings for your Carriage Cameo 5th Wheel trailer you will need to pull your hub to get the numbers off of your bearings or get the diameter of your spindle. If your have a 42 millimeter spindle then you…

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Answer 9

You do not have to press the bearing in place when installing. You can use a dowel to tap it into place, this will help prevent damage to the bearing when installing. What's great about the Nev-R-Lube bearing #31-71-3 is that you do not have to…

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Answer 10

I reached out to my contact at Dexter Axle and he said that the little bit of grease you are seeing is normal for the 50MM Nev-R-Lube Bearing #31-71-3. The race that you mentioned should be able to rotate but it should not be moving in and out. If it…

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Answer 11

The Dexter Nev-R-Lube Hub and Drum for 7000-Pound Axles, part #8-385-81SP, utilizes a different kind of bearing system than traditional hubs and drums. This hub and drum comes with the bearings and snap ring already assembled into the drum. In other…

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Answer 12

From the pictures you sent in it looks like the inner diameter of your Nev-R-Lube bearing is about 2" which means you'd need the 50MM Nev-R-Lube Bearing for 8,000-lb Dexter Axles #31-71-3. Aside from that you're basically just going to…

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Sealed Bearing Replacement For National Trailer

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