1. Trailer Bearings Races Seals Caps
  2. Bearing Buddy
  3. Caps
  4. Bearing Protector Grease Cap
  5. 2.047 Inch
Bearing Buddy Bearing Protectors - Model 2047 - Chrome Plated (Pair)

Bearing Buddy Bearing Protectors - Model 2047 - Chrome Plated (Pair)

Item # BB2047
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Trailer Bearings Races Seals Caps
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Bearing Buddy Caps - BB2047
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Provide your trailer wheel bearings with premium protection - replace your existing grease caps with Bearing Buddies. They install in seconds and provide an easy, safe way to monitor and control the level of grease in your axle hub. Lowest Prices for the best trailer bearings races seals caps from Bearing Buddy. Bearing Buddy Bearing Protectors - Model 2047 - Chrome Plated (Pair) part number BB2047 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Bearing Buddy Trailer Bearings Races Seals Caps - BB2047

  • Caps
  • Bearing Protector Grease Cap
  • Bearing Buddy
  • 2.047 Inch

Provide your trailer wheel bearings with premium protection - replace your existing grease caps with Bearing Buddies. They install in seconds and provide an easy, safe way to monitor and control the level of grease in your axle hub.


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
  • 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 internal parts and triple-chrome-plated steel barrel
    • 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 various outer bearing models
    • Works with outer bearing cup (race) model 07204
  • Lifetime warranty


Bearing Buddy installed diagram

Bearing Buddy Operation

Replace your existing grease cap with a Bearing Buddy to ensure a safe, easy way to monitor and control the level of grease in your axle hub. To adjust the amount of grease in the hub, use a grease gun to add more through the appropriate fitting. Adding grease moves the Bearing Buddy spring-loaded piston outward 1/8".

The O-ring inside the barrel of the Bearing Buddy maintains a seal from the outside. The interior of the Bearing Buddy is pressurized, preventing water from entering the barrel and diluting the grease.

An automatic pressure-relief feature is built into the Bearing Buddy. When the device is full, grease will seep around the edges of the piston and into the barrel. This prevents overfilling that can damage the inner seal.

You can manually check the grease level in your Bearing Buddy by pressing on the edge of the piston. If you can rock or move the piston, the hub is properly filled.



42400 Bearing Buddy Model 2047 - Chrome Plated (Pair)






Customer Reviews

Bearing Buddy Bearing Protectors - Model 2047 - Chrome Plated (Pair) - BB2047

Average Customer Rating:  4.9 out of 5 stars   (291 Customer Reviews)

Provide your trailer wheel bearings with premium protection - replace your existing grease caps with Bearing Buddies. They install in seconds and provide an easy, safe way to monitor and control the level of grease in your axle hub.

- BB2047
by:

Myself, I have been looking for nearly 3 years for the correct size, 2.047 and it was my friend that located your site. Both went on very snug. In the past I would purchase smaller ones and twist the inner surface and shove them on with little effort and then fly off during my travels. These Bearing Buddys went on Solid ! Harbor Freight wasn't any help at all. 160302



- BB2047
by:

Bearing Buddy is a good product. I had to use a block of wood and a small sledge hammer to put them on. They would not go on with a rubber mallet. I measured 2.045" and the closest one from Bearing Buddy was 2.047"They are on and will not come off.... The trailer is a kit that I bought at depot in 1997... I would recommend this product 98794


Comments
theses also work for the northern tool 5 x 8 trailer... hard to find this sizethanks fits great
-- comment by: barth t - 07/11/2014

5532

- BB2047
by:

Did what it was supposed to 867477



- BB2047
by:

Fit very well and holds my tractor during transport. 852726



- BB2047
by:

Works great 850845



- BB2047
by:

I am very pleased with the bearing buddy. I had lost the bearing cap and couldn't find a replacement at any auto shop. However, the BB2047 fit perfectly and keeps my bearings lubricated continuously. Replacing the cap did force me to repack the bearing, but that was probably a good thing as water had gotten in there. I feel the bearing buddy will protect my bearings probably for the life of the trailer; and since the grease is under positive pressure, water won't get in there. 818573



- BB2047
by:

Wouldn't run a trailer without them. 811846



- BB2047
by:

prompt delivery, perfect fit. 811442



- BB2047
by:

I installed the Bearing Buddys and ran them for 100 miles or so before going on a 500 mile trip. On the first 50 miles on the highway one of the Bearing Buddys flew off and I lost it. The hub was no warmer than the other side and I was driving under 65mph in 60 degree heat. I also have new tires and bearings. The Bearing Buddy’s were very snug so I don’t know why they came off. I have used Bearing Buddys in the past with no problems, but now I feel like I need to carry a spare pair or at least one spare just in case. 809852



- BB2047
by:

Excellent quality not just the item but etrailer is awesome 794385



- BB2047
by:

Wrong size cannot Use I ordered 2.47 inches and I got 2.047 774677



- BB2047
by:

These are extremely convenient...just wish I had realized I only needed to order one box. LOL! 764060



- BB2047
by:

My order arrived quickly. 761922



- BB2047
by:

THE name in bearing lubes ! I got the best price and reasonable S&H charges from E Trailer. no big deal, I did have to emery some small burrs but they are in and working 738361



- BB2047
by:

I think every trailer should have buddy bearings. My boat trailer is 26 years old. The trailer bearings are original and still working. I do make sure to lube them 2-3 Times a season. I probably launch about 12 times a year and put about 2000 miles on the trailer in a year. 733907



- BB2047
by:

Great use E trailer bb all the time,#1 in my book 730948



- BB2047
by:

Excellent,fast service ,good price and only place I found what I needed. 726003



- BB2047
by:

Very tough to find size bearing cover. Not even the Specialty trailer shop in my area didnt have them. etrailer had them and shipped them out fast. Great website made finding what I need easy. 719929



- BB2047
by:

This is a great product I have used in the past. And when you work with Etrailer you get the right product the first time. Thanks Etrailer ! 719559



- BB2047
by:

Great service and shopping! Thanks 718828



- BB2047
by:

When you buy a trailer from Harbor Freight, then buy the bearing extenders, you'll most likely find that the only ones they sell (1.98) are too small. Measure your cap for the bearings and you'll probably have (2.47) which will fit perfectly. Go to etrailer website for the correct size and super fast delivery. Thanks etrailer Larry C. 717995



- BB2047
by:

Perfect fit on Harbor Freight trailer. 714958



- BB2047
by:

Customer service is excellent. Shipping is quick and reliable , always on time. Your follow up is welcome. Quality of product I thought would be somewhat better. One of the 2 worked but the other had to be reworked cause it didn't fit the opening of the trailer hub. I was able to make it work by grinding it down a little and some persuasion. Thanks 699065



- BB2047
by:

Easy to use website, reasonable prices, and reliable delivery. Thanks! 694358



- BB2047
by:

Items were as described and shipped qui ckl.y 693870


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Show More Reviews

Ask the Experts about this Bearing Buddy Trailer Bearings Races Seals Caps

  • Bearing Buddy Recommendation to Fit Trailer Hub Bore 2.04 inch on Harbor Freight Trailer
    If your hub has a grease cap opening that measures 2.04 inch the correct Bearing Buddy is the part # BB2047 that you referenced. Or for a stainless steel version you'd want the part # BB2047SS.
    view full answer...
  • Availability of Replacement 1.82 Inch Dust Cap for Older Trailer Hubs
    We do have a set of Bearing Buddy Bearing Protectors that may work for the older hubs on your somewhat fantastic boat trailer. The Bearing Buddy Bearing Protectors part # BB1810 are designed to fit a hub bore diameter of 1.810 inches, which is awfully close to the 1.82 inch measurement you took. We do not have a standard dust cap available with this same diameter. I do also recommend measuring the actual bore diameter on the hubs too to see what measurement you get with a digital...
    view full answer...
  • Replacement Dust Cap or Grease Cap for Trailer
    We do have replacement dust caps. You will simply need to use a digital caliper like # PTW80157 to determine the size needed. I've linked the page to all your options to assist. I've also linked the page to the bearing protectors that have the integrated grease zerk to maintain them.
    view full answer...
  • How to Determine What Bearing Buddies Fit on Trailer
    It is really easy to determine which Bearing Buddies are the correct fit for your trailer, though we have no way to confirm a fit on any specific make or model. For you to confirm the right Bearing Buddies all you need to do is measure the hub bores on your trailer's hubs using Digital Caliper # PTW80157 and match the hub bore diameter to the correct Bearing Buddies. For example, the Bearing Buddy Bearing Protectors - Model 2047 # BB2047 you referenced will fit a hub bore diameter of...
    view full answer...
  • Bearing Buddy Compatibility with Harbor Freight Trailer 62648
    Harbor Freight trailers are notorious for not using standard trailer part sizes, but there are times we find a fit. If you measure your hub on the inside of the grease cap with a digital caliper like # PTW80157, I will gladly help you find the correct Bearing Buddy if we have one compatible. You will need to remove the grease cap and either measure the inside of the hub or you can measure the outside edge of the grease cap behind the ridge where it inserts into the hub. The diameter...
    view full answer...
  • How to Determine Correct Bearing Buddy for Trailer
    It is really easy to determine which Bearing Buddies are the correct fit for your trailer, though we have no way to confirm a fit on any specific make or model, though I do appreciate the detailed info. For you to confirm the right Bearing Buddies all you need to do is measure the hub bores on your trailer's hubs using Digital Caliper # PTW80157 and match the hub bore diameter to the correct Bearing Buddies. Or if you let me know the outer bearing I can match its race, which will have the...
    view full answer...
  • Grease Cap for a Harbor Freight Trailer with 2.037 Inch - 2.042 Inch Hub Bore
    The hub bore diameter of 2.037" - 2.042" is a rather uncommon size but Harbor Freight Trailers generally do use some rather oddball parts in which replacements are hard to find. Although we do not have any standard grease caps that will work for you based on the dimension that you provided, I would be willing to bet the Bearing Buddy Bearing Protectors part # BB2047 will fit as it is for a 2.047" hub bore. It can be really hard to measure the inside of a hub accurately and the digital caliper...
    view full answer...
  • Beaing Buddy for L44549 Outer Bearing
    I wasn't able to find any information on an L44549 but it's very likely that you actually have the much more common # L44649 bearing. It's really easy for grease, dirt, and time to cause that "6" to look like a "5" on the bearing number. Just to be sure I recommend taking a measurement of the inside diameter of the bearing with a digital caliper like # 301-17068. If you get an inner diameter of 1.063 inches then you have the # L44649 bearing in which case the Bearing Buddy Bearing Protectors...
    view full answer...
  • Recommended Grease Cap for a 2008 Triton Sea-Doo Trailer with 2.03 Inch Hub Bore
    Although we do not have any standard grease caps that will work for you based on the dimension that you provided, I would be willing to bet the Bearing Buddy Bearing Protectors part # BB2047 will fit as it is for a 2.047" hub bore. It can be really hard to measure the inside of a hub accurately and the digital caliper you are using could also be off a bit. The Bearing Buddy Bearing Protectors are a perfect option for boat trailers because they work really well to keep water out of your...
    view full answer...
  • Will Bearing Buddy Protectors Maintain Grease Level for Inner Bearing
    Bearing Buddy Bearing Protectors like # BB2047 are designed to replenish the wheel bearing grease all the way into your hubs so that it also reaches the inner bearing. However, they are not intended for filling dry bearings or hubs. We recommend that when servicing your hubs you use a bearing packer tool like # ALL647646 to pre-fill the bearings before you re-install them in the hubs. You should also spin the hubs while you pump in grease to help distribute it. It is not recommended...
    view full answer...
  • How to Pick out the Correct Dust Cap Size for a Trailer
    The Bearing Buddy part # BB2047 is supposed to be a snug fit. If a 2 inch diameter cap is too small the # BB2047 should be the right fit. But without knowing what the diameter of the hub bore its hard to say that definitively. I would recommend you use a micrometer to determine the bore and go from there. I attached a page that has all of the grease caps we offer.
    view full answer...
  • How to Pick Out Replacement Trailer Axle for Harbor Freight Trailer
    Harbor Freight trailers don't use standard trailer axles so replacing the hubs gets challenging so replacing the axles would be the way to go. I'd need the distance between the spring centers of your current axle as well as the distance from hub face to hub face and I'd be able to pick out the correct axle for your application. You'll also need the bolt pattern of the wheels you have to pick out which I attached a help article on determining. I also attached a link to a page that...
    view full answer...
  • Recommended Grease Caps for 2.04 Inch Diameter Hub Bore on Trailer
    The closest grease caps we have available to the 2.04 inch hub bore diameter you provided are the Bearing Buddies # BB2047. These are designed for 2.047 inch hub bores so they should work great. They will replace the existing grease caps and provide an easily accessible grease fitting that will make adding grease to the bearings quick and simple. I have included a short video demonstration on this product that you can also check out.
    view full answer...
  • Replacement Hub for Harbor Freight 4 x 8 Trailer
    The downside to buying a "bargain" trailer kit is that customer support, both in terms of helpful information and available replacement parts, can be scarce. The other issue is that products made to sell at a tempting price point may not consistently use the same parts, as in when the manufacturer can suddenly obtain less costly components and makes a running change that is not documented. For finding new hubs the best way to go is to pull one hub from the spindle and to remove the bearings...
    view full answer...
  • Bearing Buddy Grease Caps for Hub Bore Dimension of 2.05-Inches
    Bearing Buddy bearing protector grease caps are made in many sizes and we carry those most often used in recreational trailering. You can see all Bearing Buddy parts we have by clicking on the page I linked for you. Bearing Buddy grease caps are made both with and without threads so you'll want to check your hub bore to see if it is threaded or not. Click on the appropriate type on the page. For a dimension of 2.05-inches you can use a Bearing Buddy kit in size 2.047-inches, such...
    view full answer...
  • Determining the Appropriate Bearing Buddy Size Using Bearing Part Numbers and Existing Measurements
    To determine which Bearing Buddy would fit your trailer you will need either a measurement of the hub on your trailer, or the bearing part numbers. To measure your existing hub it is recommended to use digital calipers to get a precise measurement. The measurement needs to be of the inner diameter of the hub bore. Once you have that measurement then you can choose the Bearing Buddy that is the next size larger. The most reliable method to identify parts for your trailer is via part...
    view full answer...
  • Will Bearing Buddy Grease Caps Fit a Harbor Freight Trailer 62671 Folding Trailer?
    We don't have a kit for Harbor Freight trailers and their parts are very rarely compatible with standard trailer parts like we carry. We have however found there are times when the bearing buddies # BB2047 specifically has fit. We haven't confirmed a fit on that model yet, so you will need to measure the hub bore of the hubs on your trailer. If the hub bore is 2.047 then these will work for you. For a hub and bearings, you would need to pull the hub and look at the bearing numbers....
    view full answer...
  • Grease Cap/Bearing Buddy Availability for Harbor Freight Utility Trailer
    We have found that the Bearing Buddy part # BB2047 fits several Harbor Freight Trailers. Including the following trailers 90154 42709 90153 42708 2575 2948 Or, you can measure the bore of your hub where the cap would go with a digital caliper like part # ALL641130 to see what cap you would need. Once you know the size you need check out the link I attached to see all of the caps we carry. You will need to select your size from the filters.
    view full answer...
  • Bearing Buddy Bearing Protector Fit on Trailer Hubs
    The Bearing Buddy Bearing Protectors - Model 2047 - Chrome Plated (Pair) # BB2047 fits a 2.047 inch hub bore. You can test that using a digital caliper like # PTW80157 to confirm fit. I have linked our return policy as well for your convenience as requested.
    view full answer...
  • What Size Bearing Buddies Will Fit a Harbor Freight Trailer 94564
    I actually called Harbor Freight about your trailer to determine what size dust cap is used on that trailer. I reached a tech and he stated that the dust cap is 52mm or 2.0488 inches. It looks like the best option is # BB2047 or # BB2047SS . However, you normally want them to be slightly larger than the hub bore to fit snugly. One thousandth of an inch may not be an issue but you need to be aware that it is not exact.
    view full answer...
  • Which Bearing Buddy for Harbor Freight Trailer 62648 & 62666
    The Bearing Buddy we have found that fits most of the Harbor Freight trailers is the part # BB2047 which would be the correct one for if your hub bore was 2.047 inches. I'd recommend verifying that measurement on your trailer hub bore.
    view full answer...
  • Bearing Buddy and Standard Grease Caps to Fit 1.98-Inch Hub Bore
    All Bearing Buddy bearing protectors have the same depth, just different diameters. Also, some are threaded to fit threaded hubs while others are not. If your spindles have a grease zerk fitting on the end you will not need to use a Bearing Buddy; that grease zerk means you have EZ-Lube spindles which provide an alternate way to maintain your hubs grease level. For such spindles use part # RG04-040 If it is the actual castle nut that hits the inside surface of the Bearing Buddy then...
    view full answer...
  • How to Pick the Correct Bearing Buddy for Boat Trailer
    I was unable to find a reference of the dimensions of your current bearing protectors so in order to choose the correct replacements you will need to measure the hub bores on your trailer's hubs using a digital caliper such as # PTW80157. For example, Bearing Buddies # BB2047 fit a 2.047" hub bore. I've added a link to our selection of Bearing Buddies for you to check out as well.
    view full answer...
  • How To Find Bearing Replacement For Harbor Freight Trailer
    In order to find the best replacement bearings and seals for your Harbor freight Trailer, you will need to remove the wheel and hub and pull the bearings, seals, and races off your spindle. I have attached a photo that shows where you can find the numbers on those items. If you are not able to find the numbers on these items, you will need to take some measurements of the spindle with a precision instrument like a digital caliper in the locations as shown in the attached photo. Typically,...
    view full answer...
  • Grease Cap Recommendation to Fit Hub of Harbor Freight Utility Trailer with Bore 2.050 inch
    The best option we have is the Bearing Buddy part # BB2047 which is a fit as it is designed to fit hub bores of 2.047 which is very close to what you have.
    view full answer...
  • Bearing Buddy Recommendation for a Harbor Freight Trailer 92174
    Most likely the Bearing Buddy Bearing Protectors - Model 2047 # BB2047 that you referenced would be the correct Bearing Buddies for your Harbor Freight trailer since these have been confirmed to fit several of the other model Harbor Freight trailers, but since we haven't confirmed it yet you will need to measure the hub bore of the hubs on your trailer. If the hub bore is 2.047 then these would work for you.
    view full answer...
  • What Size Bearing Protector Will Fit a Harbor Freight Utility Trailer with 2.047 Inch Hub Bore
    With a hub center hole diameter of 2.047 inches, there are 2 Bearing Buddy options for you. First we have # BB2047 that you have referenced. These are chrome Bearing Buddies. The other option is a set of stainless steel Bearing Buddies, # BB2047SS.
    view full answer...
  • How to Pick Out Replacement Trailer Grease Seal and How to Install Grease in Hub with Bearing Buddy
    A common problem we hear with people with Bearing Buddies is that since it is so easy to add grease to the hub that they end up putting too much in and blowing out the grease seal. Replacing the seal would not be too hard, but we first would need to determine what seal you would need. To do that you will need to pull the hub and measure the inner diameter of the hub where the seal installs and then measure the outer diameter of the spindle where the seal rides. You will want to use a...
    view full answer...
  • Troubleshooting Grease Seal that Keeps Blowing Out on Trailer Axle
    It sounds like your problem may be that you are installing too much grease into the hubs and that is why they are blowing out. If you are pumping your grease into your hub with a grease gun you should note that you should only continue to add grease to the hub until you begin to see the outer bearing move or you see grease seeping through the outer bearing. If you pump the grease slowly and rotate the hub, you should not blow the grease seal. Once you see the grease seeping through,...
    view full answer...

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