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  1. Trailer Bearings Races Seals Caps
  2. Bearing Buddy
  3. Caps
  4. Bearing Protector Grease Cap
  5. 2.05 Inch
  6. 2000 lbs Axle
Bearing Buddy Bearing Protectors - Model 2047A-SS w/ Auto Check - Stainless Steel - Qty 2
Bearing Buddy

Bearing Buddy Bearing Protectors - Model 2047A-SS w/ Auto Check - Stainless Steel - Qty 2

Part Number: BB37SR
In Stock
$35.63
Retail:$38.50
You Save: 7%
Trailer Bearings Races Seals Caps
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Check grease levels at a glance with the blue auto-check ring. Stainless steel Bearing Buddies maintain light grease pressure inside the hub to protect your bearings, even when submerged, while the zerk fitting makes adding grease quick and easy. Great Prices for the best trailer bearings races seals caps from Bearing Buddy. Bearing Buddy Bearing Protectors - Model 2047A-SS w/ Auto Check - Stainless Steel - Qty 2 part number BB37SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Bearing Buddy Trailer Bearings Races Seals Caps - BB37SR

  • Caps
  • Bearing Protector Grease Cap
  • 2.05 Inch
  • 2000 lbs Axle
  • Bearing Buddy

Check grease levels at a glance with the blue auto-check ring. Stainless steel Bearing Buddies maintain light grease pressure inside the hub to protect your bearings, even when submerged, while the zerk fitting makes adding grease quick and easy.


Features:

  • Replaces the grease cap in the axle hub
  • Prevents wheel-bearing failure
    • Keeps water and dirt out of hubs and bearings
    • Allows boat trailer wheels to be completely submerged
    • Stops corrosion and pitting on bearings
  • Provides easily accessible grease fitting
    • Makes adding grease to the bearings quick and simple
  • Maintains slight, controlled pressure (3 psi) with spring-loaded piston, preventing water from entering hub
  • Allows visual monitoring of grease levels with blue indicator ring
    • Ring sits flush with top of cylinder when full
    • If ring is below top, add grease to move piston outward 1/8"
  • Prevents overfilling and rear seal damage with automatic pressure-relief feature
    • Grease seeps around piston edges and into barrel when full
  • Constructed of stainless steel for long-term corrosion protection
    • Also ensures longer-lasting fit than plastic or aluminum products
  • Includes rubber covers
  • Installs easily
  • Made in the USA


Specs:

  • Fits 2.047" hub bore
    • Works with outer bearings: 07079, 07087, 07093, 07098, and 07100
    • Works with outer bearing cup (race) model 07204
      • Commonly found on 2,000 lb axles
    • Lifetime warranty


Bearing Buddy Diagram without blue ring text

Bearing Buddy Operation

Replace your existing grease cap with a Bearing Buddy for an easy way to monitor and maintain the grease level in your axle hub. Use a grease gun to add grease through the zerk fitting. As the hub fills, the spring-loaded piston moves outward, raising the blue auto-check ring. When the blue ring is 1/8" above the steel retaining ring, the hub is properly filled.


The O-ring inside the barrel of the Bearing Buddy maintains a seal from the outside. The pressurized grease inside the hub helps prevent water from entering and contaminating the grease. Bearing Buddy also includes an automatic pressure-relief feature to help prevent overfilling and damage to the inner seal. Once the hub is full, excess grease seeps around the edges of the piston and into the barrel while the blue auto-check ring remains raised.


Check Grease Level with a Quick Glance
Blue ring close up

Check the blue auto-check ring to see when it's time to add grease. If the ring has receded below or is flush with the steel retaining ring, more grease is needed. If the lip of the blue ring is 1/8" above the steel retaining ring, the hub is properly filled.



42412 Bearing Buddy Model 2047A-SS - 2.047 Bore - Blue Indicator Ring - Stainless Steel - Quantity 2





Video of Bearing Buddy Bearing Protectors - Model 2047A-SS w/ Auto Check - Stainless Steel - Qty 2
Video Thumbnail Video Player Dialog

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




Video Transcript for Hands-On with the Bearing Buddy Bearing Protectors-BB37SR

Hi there, I'm Michael with etrailer.com. Today we're gonna take a quick look at this Bearing Buddy stainless steel bearing protector set. This set is gonna provide two Bearing Buddies that will replace the grease caps and the hubs of one of your trailer's axles. So this system is designed to help protect your bearings by preventing water and dirt from getting in and potentially causing damage to your bearings through corrosion and pitting and that sort of thing. So this system is going to fit your 2.047 hub boards. Gonna work with the outer bearing cup or race model that you see on the screen there, as well as various outer bearing models that will fit into that race.

These are going to install very simply just like how your standard grease cap will fit in there but this will then allow your boats to have the wheels completely submerged. So the issue often comes up when you are submerging your boat trailer that your hubs have warmed up as as you're traveling to your site where you're gonna be fishing or enjoying the water. And so as those hunt hubs make contact with the cold water of vacuum forms inside the hub and that can pull water and dirt into the hub and into the bearing area so that you could potentially be causing contamination of your grease and that sort of thing. So this system is gonna maintain a slight controlled pressure about three psi with a spring loaded piston that's going to help offset that vacuum and it's gonna prevent that water and dirt from entering the hubs and bearings which is gonna help prevent any corrosion and pitting of the bearings. And then you know, long term it will help prevent bearing failure by preventing that corrosion.

These are also going to allow you to visually monitor your grease levels with this blue indicator ring here. So the ring sits flush with the top of the cylinder when it's full. If the ring is below the top, you just need to add some grease there, move that piston outward about an eighth of an inch. This will provide easy access to your grease fitting. So very simple.

They include the rubber caps here. So you just pull that off and you can hook up your grease gun, add some grease very quickly there and make sure that you've got enough. And this is also going to prevent overfilling and rear seal damage with the automatic pressure relief feature. Also, the grease is gonna seep around the piston edges and into the barrel when it's full. That way you don't have to worry about overfilling.

This is made here in the USA. It's constructed of stainless steel, so it's going to ensure longer lasting fit than say plastic or aluminum products. So it will hold up well for you. Like I said, they do include the rubber covers to help provide a little bit more protection especially for your grease zerk there. Make sure you're not getting any contaminants on there. And this does come with a lifetime warranty so if you we're to have any issues with it you're more than welcome to reach out to us here at etrailer.com and we'll be happy to work with you. Make sure you're getting good quality products, help solve any problems that may arise. But overall, I do think this is gonna be a great way. Like I said, especially if you're gonna be in and out of the water frequently, this is gonna help protect those bearings. So I think it's gonna pay for itself within a season or two not having that damage of your bearings. That completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.

Customer Satisfaction Score:

Ratings & Reviews

4.8

1690 reviews
5 Stars
(1492)
4 Stars
(125)
3 Stars
(29)
2 Stars
(13)
1 Star
(31)
Review sort icon
Check grease levels at a glance with the blue auto-check ring. Stainless steel Bearing Buddies maintain light grease pressure inside the hub to protect your bearings, even when submerged, while the zerk fitting makes adding grease quick and easy.

by:

Bearing Buddies customer support is horrible, one of my new caps was defective the grease zerk came off, I contacted them and this is what they sent me, I guess I’m supposed to bring it to a mechanic and pay $$$ to have it fixed ! Garbage !



by:

I love them, but they will not work if you have hubs with grease fittings on the spindle. The BB piston will hit the fitting on the spindle. Then, My grease fittings were the driven-in type, so that ballooned the project.



by:

As expected, fast shipping



by:

I haven't move the trailer after I put the BB1980T-SS grease cap on it. They started on pretty good then got harder about mid way on, so I got a pipe ranch to get them all the way on but over all it wasn't very hard to do it only took about 15 minutes to complete the project which is good. They really set the trailer off because the trailer is painted Black.



by:

Service and shipping second to none!Thanks again!



by:

After being unable to get replacement Bearing Buddy's from my local boat dealer, (they claimed they were on order for 3 months) I finally got smart and found etrailer online. Easy ordering process and I had my new Bearing Buddys in less than a week. Great service, great product, I'll be back for all my trailer parts and accessory needs.



by:

They fit perfect, this will make keeping up with bearings so much easier



by:

Quick shipping, work great !



by:

Great quality bearing enhancement. Keeps your hubs clean from dirt and packed with the right amount of grease



by:

Love how easy it is to keep the wheel bearings greased with these Bearing Buddy's.
Just pop the cover off, hook up the grease gun, a few quick pumps, and the bearings are ready for another season. The blue inside plate moves out as the grease goes in so you do not over fill the bearing. Slid the cover back on and you are done.



by:

Chinese bearings.
I had i known this
upfront I would not have purchased.



by:

Great Product and was the perfect fit for my trailer. Fast shipping and great service!



by:

wrong shipping address was applied to the order attempted two minutes after placing the order to change the address. All I got was voicemail basically two days later I received a response saying it was too late and of course, after two days, it would be too late.



by:

Fast shipping on these bearing buddys. They are an odd size, it was an old international truck axle I used to build a trailer. I couldn't find them anywhere else, and the price was good for a quality bearing protector.



by:

Installation instructions were very helpful and thanks to the customer service rep, these fit my hub assembly perfectly.



by:

I lost one of four bearing buddies. I love these things, I just wish they made a model that could be used with greasable spindles. Now to figure out why the first one came off my brand new trailer. I used red picture on this one, we will see.



by:

Perfect for my trailer and will help seal out water and hopefully add life to my bearings. etrailer is and always will be my stop for great products and service!



by:

Really only needed a cap. Because not a boating trailer. But 1.81 diameter in dust caps is hard to find. It fits good. Etrailer is the place, when it comes to a large size variety.



by:

Delivered right on time fast shipping great products!



by:

All 3 products are working well. Before the new parts, the trailer blew a tire which bent up the fender and smashed a tail light. I ordered what I needed from eTrailer and put my trailer back together. Parts were all available and came quick. I didn't miss any fishing opportunities as a result.



by:

Great price, excellent quality, delivery was fast and installation was easy, the bearing buddies arrived today they are on the trailer and ready to go.
Thanks e trailer!



by:

Product Review: Only intimidating before you install. Really easy, pop out the OEM caps and replace with the bearing buddies, fill the buddies with your grease gun and you are done. Nice to know my (well greased by the factory ) wheel bearings now have a supply of grease under slight pressure to be sure there will always be grease in my bearings and foreign matter will be kept out.



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See what our Experts say about this Bearing Buddy Trailer Bearings Races Seals Caps


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Dustin K
Video Edited:
Dustin K
Employee Daron K
Updated by:
Daron K
Employee Dawn Z
Updated by:
Dawn Z
Employee Michael B
Installed by:
Michael B
Employee Ryan F
Written by:
Ryan F

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