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

Part Number: BB2047
In Stock
$31.55
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. Great 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 1-800-940-8924 for expert service.
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  • Reviews (1358)
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Bearing Buddy Trailer Bearings Races Seals Caps - BB2047

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

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 Satisfaction Score:

Ratings & Reviews

4.8

1348 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.

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Bearing Buddy's worked sweet..



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Fast shipping. Excellent products.



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Excellent product. Simple to install.



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1348
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See what our Experts say about this Bearing Buddy Trailer Bearings Races Seals Caps

  • 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...
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  • 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...
  • 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...
    Image 1 for
  • 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...
  • Picking Out Bearing Buddy for Harbor Freight Trailer
    In order to pick out the correct bearing buddy you will need know the pilot hole of your hub. To do this, remove the wheel and tire and remove the grease cap from the center of the hub. Usually it is a metal cap that is just lightly hammered into place. Use a screwdriver to pry off the cap. Clean the grease off and measure the opening. I have included a video demonstrating the Bearing Buddy. The Bearing Buddies # BB1980A-SS for example are for hubs with a 1.98 inch hub bore.
    view full answer...
  • Bearing Buddy Bearing Protectors Needed for a 1965 Shasta Trailer
    The Bearing Buddies, # BB2047, are pressed into the hub for a tight fit. To determine the correct part for your trailer hub you will need to measure the diameter of the grease cap mating surface in the hub and match that as closely as possible to the measurements provided on the bearing buddy product pages, see link. If your grease caps are threaded, the Bearing Buddies, # BB1980T-SS, # BB2441T-SS or # BB2080T-SS, may be the correct size for your hubs, measuring to determine the correct...
    view full answer...
  • Is Bearing Buddy BB2047 Thread In or Press In
    Hey Robert, the Bearing Buddy part # BB2047 is not threaded. It would get tapped in.
    view full answer...
  • Bearing Buddy Bearing Protectors For a Detail K2 MMT5x7G Utility Trailer
    I was able to verify with Detail K2 the 2.047" hub bore size is what they currently use on their trailers. They did mention you could have a different size depending on the age of the trailer as they did not always use the same size hubs. Since you mentioned the Bearing Buddy Chrome # BB2047 or Stainless Steel # BB2047SS were to small to fit you will likely need the Chrome # BB2080 or Stainless # BB2080SS. These are for a 2.080" hub which is only 33 thousands of an inch larger in diameter.
    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...
  • Recommendation for Replacement Hub With 30205 Bearings
    The bearing you have is actually a 30205 bearing which has an inner diameter of 0.985 inches. From what I could find, this is a common bearing used on the Harbor Freight trailers. With that being said, we do not have a replacement for this, unfortunately. This is something you would need to go through Harbor Freight for a direct replacement. However, the better option will be to actually replace the axle. This will get you set up with something that is much more common. Something like...
    view full answer...
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  • 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...
  • 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...
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  • 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...
  • What Needs to be Measured to Determine Correct Bearing Buddy?
    What you need to do is simply measure the outer bore of your hub with a digital caliper, which will tell you the Bearing Buddy you need. For example, Bearing Buddies # BB2047 are for use with a 2.047" hub bore. I've added a link for you with our selection of Bearing Buddies to come back to when you know what your hub bore diameter is.
    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...
  • 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 caliper....
    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...
  • 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...
  • Availability of Grease Caps for 2.047 Inch Hub Bore Diameter
    The Bearing Buddy Bearing Protectors - Model 2047 - Chrome Plated (Pair) # BB2047 you looked at would be a great option for a grease cap that fits a 2.047" hub bore diameter. The other option you have would be the stainless steel version of these which is the # BB2047SS. Both have built in grease fittings to make adding grease quick and simple. They will do an excellent job keeping out water and dirt as well.
    view full answer...
  • What Size Bearing Buddy Fits My 7000 lb Axles
    Based on your 7000lb axles, it has a grease cap flange diameter of 2.722". As a result Bearing Buddy Bearing Protectors # BB2717SS will work for your axles.
    view full answer...
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  • Which Bearing Buddy Fits the Detail K2 Mighty Multi A-Frame Utility Trailer # K2MMT5X7
    I had the Detail K2 Mighty Multi A-Frame Utility Trailer # K2MMT5X7 pulled from our warehouse and used the Digital Caliper # PTW80157 to find that the hub bore measured 2.04". Although it is slightly larger than the hub bore, I was able to find that the Bearing Buddy that fits a 2.047" hub bore will fit perfectly on the trailer. This size Bearing Buddy comes in Chrome Plated # BB2047 or Stainless Steel # BB2047SS. I have attached some review videos of the Bearing Buddy options for you...
    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, you...
    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 as either...
    view full answer...
  • Bearing Buddies Installation on 4x8 Harbor Freight Utility Trailer
    The bearing buddy protectors will add grease to the bearings without needing to repack them. I suggest adding the Bearing Buddy # BB2047 which has been known to fit several Harbor Freight trailers including 90154, 42709, 90153, 42708, 2575, and 2948. After you fill them, drive the trailer for a few miles and then check the Bearing Buddies to add additional grease if needed. The pressure from the spring loaded seals in the Bearing Buddies will push the grease into the bearings to keep...
    view full answer...


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