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Bearing Buddy Bearing Protectors
Bearing Buddy Seals for Trailer Bearings

Bearing Buddy






Expert Answers about Bearing Buddy

  • How To Tell What Size Bearing Buddy Is Needed for My Trailer Hubs
  • The portion you need to measure is not the cap, but the the hub bore. Remove the grease caps and measure the diameter of the opening the caps occupy. This is the hub bore. You will need an accurate measuring devices like a set of dial calipers that is accurate to 3 decimal places. The Bearing Buddy pair you were looking at, part # BB1781, fits a 1.781 inch hub bore. The measurement you find should match exactly or very close to one of the measurements displayed on the Bearing Buddy page...
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  • How To Tell If Bearing Buddy Has Enough Grease
  • The great thing about Bearing Buddy like part # BB1781 is that when you add grease to your system with the included fitting, it will move the spring-loaded piston outward and allow grease to seep around the edges to keep from damaging the seal. You can manually check the Bearing Buddy to be sure it has enough grease. All you need to do is press the edge of the piston. If you can move or rock the piston it has enough grease. I have attached a drawing of a Bearing Buddy you can check...
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  • 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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  • How Much Grease To Use when Installing Bearing Buddies on a 1997 Jayco Pop Up Camper
  • Your Bearing Buddy instructions are correct. When installing bearing protectors on a trailer hub, you will want to fill the hub with as much grease as possible, so that you do not have to pump all that grease into the hub with the grease gun after installing the bearings and seals. This also helps to prevent pressure build up in the hub and blow out of the seal in the back of the hub. When using a bearing protector you should always use a double lip seal, like part # RG06-020, which...
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  • How to Add Grease to Hub that Uses Bearing Buddies
  • Using a Bearing Buddy to grease a hub can easily allow you to over fill the hub and blow out a seal. The zerk fitting where you insert the grease is sitting on a spring loaded disc or piston that will move outward away from the hub as grease is added. Push on the edge of the piston with your finger. If the disc doesn't move, add grease until the piston moves. If you can turn the wheel by hand while you are doing this it will help distribute the grease in the hub as well. I attached...
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  • Best Grease to Use for Boat Trailer Hubs
  • The highest quality grease we carry for wheel bearing is the LMX red grease like the part # L11390 that you referenced. If you are looking for a brand that is available in both a cartridge and a can you would want the part # L10320 for the cartridge. LMX Red is heavy-duty, premium grease for the toughest lubricating jobs on the biggest, heaviest equipment. It performs better under higher pressures and temperatures than standard multi-purpose grease, and it resists water better....
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  • 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.
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  • How to Determine the Correct Bearing Buddy Kit for a Boat Trailer
  • You will need to remove the wheel find out the outer bearing number. Once you have the bearing number, I can find if we have a Bearing Buddy available for it. The Bearing Buddy pages also have listings on them for what bearings they fit. The reason you have to go to such lengths to find out what Bearing Buddy Kit you need is that there are so many different variations in bearing/spindle/seal combinations that the only way to be sure you have the right part is to check the equipment you...
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  • How to Choose the Correct Replacement Bearing Buddy Bra
  • The plastic caps for the Bearing Buddy bearing protectors that you are looking for are the Bearing Buddy Bras. We carry three different bras, # BB17B, # BB19B and # BB23B that fit different ranges of Bearing Buddy sizes. You should choose the Bearing Buddy bra that will fit your model bearing buddy. The model numbers that these bras fit are listed on the product page. If you do not know the model of your Bearing Buddy, then you can measure the bore hole diameter on your hub with a precise...
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  • What is the Bearing Buddies Bearing Protectors Purpose
  • The Bearing Buddies are designed to protect your bearings by keeping water and dirt out of the hubs and bearings and ensuring there is enough grease inside the hub. If you are not experiencing any problems or visually see any grease leaking out of the hub, then you shouldn't have to repack your bearings regularly. I recommend checking your hubs once a year to inspect the condition of your brakes. If you notice any grease leaking out of the hub, then grease could have been compromised,...
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  • 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,...
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  • How To Easily Grease Trailer Hub Without EZ Lube Spindle
  • I have a solution for you, but I do not recommend attempting to drill into the spindle to install a zerk fitting. Instead, I recommend using Bearing Buddy Bearing Protectors to help make greasing your trailer axles easier. The Bearing Buddy will replace the grease cap in the axle hub to provide an easily accessible grease fitting. In order to determine the correct Bearing Buddy for you trailer, you will want to use a digital caliper, like # PTW80157, to measure the hub bore of your...
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  • Can Bearing Buddies be Used on a Travel Trailer
  • Yes! You can use Bearing Buddies on anything as long as you use the right size and as long as the axles are not EZ Lube axles with the grease fittings on the ends of the spindles. If your outer bearings are L44643, L44649, or L44640 then you can use # BB1980A-SS. Checking the outer bearing number is pretty easy. You will not have to take off the hub. You will just need to take off the castle nut and any washers in the way, wipe the grease away from the bearing, and check the number...
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  • What Size Bearing Buddy to Replace 2-7/16-Inch Grease Cap
  • The best way to measure hub bore to determine which Bearing Buddy size you need is with a digital caliper. If you do not own one you may be able to borrow or rent one from a local auto parts store. Your other option is to obtain the outer bearing number from your trailer. You may be able to obtain the bearing number without having to pull it from the spindle; try wiping it clean of grease to see if the bearing number can be read. The size you quoted, 2-7/16 inches, corresponds to...
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  • How Does Inner Bearing Get Grease When using Bearing Buddy
  • Bearing Buddy pumps grease into the center of the hub all the way back to the grease seal. A double lip seal should be used to prevent grease from blowing out the seal when added. When the hub and seals and bearings are first assembled, they should be packed. After a period of time and when you want to maintain the grease on the bearings, the grease would travel from the zerk fitting on the Bearing buddy through the outer bearing. It would then fill the cavity inside the hub and continue...
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  • Need To Replace Old Grease Seal # 171255
  • You will want to match up the old seal with the number stamped on the seal. Each seal number is an indication of a different size seal. The correct # 171255 seal that you will need is Grease Seal - Double Lip, part # 58846. This seal includes the spring that you referred to.
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  • What Causes Grease On the Inside of Boat Trailer Wheels
  • The guy you were speaking with was telling the truth. If the Bearing Buddies are overfilled, you will indeed blow out the grease seal. The excessive pressure will push the grease out through the rubber portion of the seal. Using a double lip grease seal that has a radial spring inside it which makes the rubber seal grip the spindle more tightly can help reduce the likelihood of the seal blowing out. Also, when adding grease, pay close attention to the piston surrounding the grease zerk....
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  • How to Pick Out Replacement Hubs for Mobile Home Axles
  • You would have to contact your local DOT to find out if the tires/wheels/hubs you have are street legal in your area. Typically mobile home axles are set up for one time use so relying on them for any length of time might not be the best idea. You can also try contacting HADCO directly to see if they recommend your specific hub for highway use. You may find that you need to replace your hubs. In order to pick out the correct hub assembly for a trailer you are going to need know a few...
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  • Do You Still Need to Pack Hub Bearings If Bearing Buddies are Used
  • You will want to pack the bearings with grease as you are reinstalling the trailer hubs. Check out the video I attached to see how this is done. The bearing buddies are a great way to make sure the assemblies are topped off with grease, but you still want to pack them initially. You may also be interested in the bearing packer part # L70025. Review video attached as well.
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  • 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.
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  • Replacement Dust Cover for Bearing Buddy that Measures 2-1/2 inches Across
  • The Bearing Buddy Replacement Bras you will need are part # BB23B, model 23B.
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  • Can I Use Bearing Buddy Bearing Protectors With an Easy Lube Spindle
  • Easy lube spindles are not compatible with Bearing Buddy Bearing Protectors. You could use the Bearing Buddy Bearing Protectors if you remove the zerk fitting. You really do not need Bearing Buddies though. The whole purpose of Bearing Buddy Bearing Protectors is so that you do not have to remove the grease cap. I have linked a video review of the Bearing Buddy Bearing Protectors.
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  • What is the Benefit of Using Bearing Buddies on a Travel Trailer
  • Yes, even if you do not plan on much marine activity, you can still benefit from adding Bearing Buddies, # BB1980A-SS. They will help to prevent wheel bearing failure by keeping out dirt and moisture, something that all trailers will come across. Adding grease to the bearings will be much easier as you will have a fitting on the caps that will allow you to add grease with a grease gun like # L30191. And the blue ring will allow you to know when to add grease. All of this will help extend...
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  • Comparing Bearing Buddy and Kodiak Red Eye Trailer Bearing Protectors
  • You can use bearing protectors on a hub with electric brakes. You have to make sure you are using a double lip seal though because a single lip seal is more likely to blow and allow grease to leak out and get all over the hub and brake components. Also, you have to make sure that you do not use too much grease, even with a double lip seal, because of the same possibility of blowing the seal. Based on the numbers you have provided you will likely need a 10-19 seal, # RG06-050 for a pair....
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  • Available Sizes of Dust Covers for Bearing Buddy Bearing Protectors
  • We offer replacement bras for Bearing Buddy grease caps in three sizes, parts # BB23B, # BB19B and # BB17B. These have outer diameters of 2-7/16-inch, 2-1/8-inch and 2-inches, respectively. The specific protectors these fit are shown on each item's page. These are the only bras we offer and part # BB23B is the largest.
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  • 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.
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  • How Much Grease Should be Added to the Bearing Buddy Bearings
  • In order to add grease to a bearing buddy such as the Bearing Buddy Bearing Protectors part # BB1980A you will need a grease gun like part # ALL940798 and the appropriate bearing grease like part # L10320. Once you have obtained both the grease gun and grease you can fill the bearing buddy. 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...
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  • How to Remove Bearing Buddy Trailer Bearing Protectors
  • Bearing Buddies like # BB2441 fit very tight into a trailer hub. In order to get them out, you will need to use a rubber mallet and persuade them out. Once the Bearing Buddy starts to unseat from the hub you can grab it and wiggle it out.
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  • How to Measure a Hub Bore Diameter to Determine What Size Bearing Buddies Fit a Trailer Hub
  • To find the correct size Bearing Buddies you can take a set of calipers, dial or digital, and measure the diameter of the hub bore. Part # BB2047 fits a bore size of 2.047 inches. Part # BB2080 fits a hub with a 2.080 inch bore. You will need to measure your hubs to see what size they need.
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  • Bearing Protector Grease Cap Installation on a Boat Trailer with EZ-Lube Spindles and Disc Brakes
  • When installing a disc brake kit, like the Titan Disc Brake Kit, # T4843400, on your boat trailer I recommend staying with the original EZ-Lube grease caps, like part # RG04-040. Bearing protectors are not recommended for use with EZ-Lube spindles because the grease zerk in the end of the spindle will interfere with the inside of the bearing protector when pressed into the hub. Grease zerks are pressed into the end of EZ-Lube spindles and are usually very hard to remove. If you were...
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