Lowest Prices for the best Trailer Bearings and Races from Redline. Bearing, 50MM Nev-R-Lube part number 31-71-3 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Trailer Bearings and Races > Bearings > 3500 lbs Axle > Bearing 31-71-3 > 50 MM I.D. > Redline

Bearing, 50MM Nev-R-Lube

Redline Trailer Bearings and Races

(2 reviews)

Code:   31-71-3



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Shipping Weight: 2.69 pounds


Redline Trailer Bearings and Races - 31-71-3

  • 50 MM Cartridge style, Nev-R-Lube
  • Fits Dexter 50mm Nev-R-Lube axle with 8-lug, 6-1/2 bolt circle
  • Works on hub and drum assembly with drum size of 12 x 2 and 12-1/4 x 3-3/8
  • Dimensions: 50mm I.D. x 84mm O.D. x 54mm wide

Replacement Bearings are high quality bearings, designed for high-speed use. All Bearings have industry standard numbers, regardless of the brand.

Video of Bearing, 50MM Nev-R-Lube

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Video Transcript for Redline Trailer Bearings and Races 31-71-3 Review

Today were going to review part number 31-71-3. This is the Redline 50 mm cartridge style bearing for a Nev-R-Lube axle. This bearing will fit the Dexter 50 mm Nev-R-Lube axle with the eight-lug, 6-1/2 inch bolt pattern. It works on hub and drum assemblies with a drum size of 12 x 2 or 12-1/4 x 3-3/8. The actual size on this is given as a 50 mm x 84 mm x 54 mm. Basically, what that is selling you is 50 mm would be the inside measurement right here.

I have a digital caliper here thats reading in millimeters. If we do that, its 50 mm. Then the 84 would be the overall diameter. If we do that, its going to be 84 mm. Then the 54 would be the section here.

That would be 54 mm. Now, this type of bearing does look different than your normal wheel bearings, but basically, what this is. These are how youre used to seeing regular bearings. Well, if you put two of them together like this, thats what that is and then they are sealed. Basically, there is no need to pull the hubs to repack the bearings, there is no need to replace seals when you check the brakes, and there are no more inner and outer bearings.

Its all combined right into this one. Itll give you pre-set adjustments, which makes ease of installation, because the human error is virtually eliminated in bearing adjustments, and it is pre-lubricated at the bearing factory, which will make it resistant to contamination, and its sealed for life so theres no bearing maintenance for increased durability and reliability, and lower maintenance cost. This has a five-year or 100,000-mile warranty against defects in material or workmanship. That should do it for review on part number 31-71-3.

Customer Reviews

Bearing, 50MM Nev-R-Lube - 31-71-3

Average Customer Rating:  4.5 out of 5 stars   (2 Customer Reviews)

- 31-71-3

by: E. manes04/18/2015

The bearing were delivered on time ( one day aire) and they were the right bearing could not of aks for anything more. etrailer did a great job in getting me the right part to fix my 5th wheel.Great job Melinda E 186176

- 31-71-3

by: Rick L03/30/2015

The never-lube bearing is a Chinese copy of the original Timken bearing. I'm sure it will work for a while, but by looking at it I can see it is not the same quality as the original Dexter installed. 181520


Ask the Experts about this Redline Trailer Bearings and Races
Do you have a question about this Trailer Bearings and Race?

  • Overloaded 7000 Axles on HR Aluma Scape 31 5th Wheel Trailer
  • If your axles are indeed rated for 7,000 pounds each, and your actual trailer weight is at 14,400 lbs you are already overloading each axle by 200 lbs. Determining the actual fully loaded and ready to tow weight of your fifth wheel is very important. Although some would argue that there would be some sort of cushion or wiggle room engineered into the axles, in my opinion you will need to lower the trailer weight to the point where it is below the axle capacity or upgrade to larger capacity...
    view full answer...

  • Who is the Bearing Manufacturer for the Nev-R-Lube 50mm Bearing Part # 31-71-3
  • 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 intended for use on hub and drum assemblies with a 12 by 12 and 12-1/4 by 3-3/8. I have included a short demonstration video of this product for your reference.
    view full answer...

  • 50mm Nev-R-Lube Trailer Bearing for a Holiday Rambler Aluma Scape 31
  • We do have the 50mm Nev-R-Lube bearing. It is # 31-71-3. You can view the current pricing by clicking on the link to the product. I have also included a link to a video review for you.
    view full answer...

  • Replacement Hub Recommendation for Hub that Had L44649 Bearings
  • We carry the hub you would need for your trailer, but they do not have the bearings pre-installed. If it's an idler hub with a 4 on 4 inch bolt pattern you would need part # 8-91-05UC1-EZ. If it's a brake hub you would need part # 8-173-16UC3. For a 5 on 4-1/2 inch bolt pattern idler hub you would want the part # 8-259-5UC1-EZ, or for a brake hub part # 8-257-5UC3-EZ. I attached a help article link and install video for replacing hubs for you to check out as well.
    view full answer...

  • Sealed Trailer Bearing Availability
  • We have a few sealed trailer bearings. If you have a Neverlube bearing setup on your trailer then you would want the # 31-72-3 for a 35 mm bearing, #31-73-3 for 42 mm, or # 31-71-3 for 50 mm. The measurement that I mentioned for each bearing would be the inner diameter.
    view full answer...

  • How to Pick Out Nev-R-Lube Bearings for a Carriage Cameo 5th Wheel Trailer
  • 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 would want the # 31-73-3 bearing you referenced, 35 mm spindle you would want the # 31-72-3 or 50 mm # 31-71-3.
    view full answer...

Do you have a question about this Trailer Bearings and Race?

Info for this part was:

Installed by:
Jeff D

Expert Research:
Jameson C

Expert Research:
Rachael H

Photos by:
Zach O

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