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Expert Answers about Grease Caps


  • Are Protective Covers Included With Bearing Buddy Bearing Protectors
  • The Bearing Buddy Bearing Protectors, part # BB2047SS are sold in pairs and come with the protective caps. These are stainless steel caps and are designed to fit 2.047 inch hub bore. The Bearing Buddy that is chrome plated is part # BB2047. These are also sold in pairs.
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  • In What Quantities Are Bearing Buddies # BB2047 Sold
  • The product you referenced, Bearing Buddy Bearing Protectors Model 2047 # BB2047, are sold as a pair, enough for one axle. Each kit includes two Bearing Buddies and two rubber covers that fit over the bearing protectors after you've filled them with grease. If you have a tandem axle trailer you will need to order one kit for each axle, so that you get a total of four protectors and four covers. This kit fits hubs with a bore of 2.047-inches. I have linked an installation video for your...
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  • Recommended Bearing Buddy Bearing Protectors
  • You are correct. The next size up for the Bearing Buddy Bearing Protectors is 2.047 inch. To order a pair you will need part # BB2047. If you want the stainless steel protectors, you will need to order part # BB2047SS. I recommend using digital calipers to measure the inside bore of your hub to make sure the # BB2047 will work for you.
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  • Grease Cap Recommendation for a Hub with 55 mm Bore
  • 55 mm is right at 1.968 inches, so the correct grease cap you would need would be the Bearing Buddy part # BB1968SS.
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  • What is the Outer Diameter and Thread Pitch of Bearing Buddies # BB2441T-SS
  • I went out to the warehouse and pulled Bearing Buddies # BB2441T-SS. The outer diameter of the threaded portion is 2.34 inches using digital calipers to measure. The thread pitch is harder to determine. There are approximately 9 threads per inch (only three threads on the actual product) and it is coarse threaded as opposed to fine threaded. These Bearing Buddies are designed to replace Tie Down Turbo Lube oil baths.
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  • Can Different Brands of Lithium Grease be Mixed
  • Yes, you can mix different brands of lithium grease like the part # L11357 and # L10308.
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  • Bearing Buddy Recommendation for a Hub Bore of 2.402 inches
  • For a Bearing Buddy designed to fit your 2.402 pilot hole on your hub you would want the # BB2441 or the stainless version part # BB2441SS. I attached a review video for you to check out as well. Pricing is below at the links.
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  • How to Pick Out Bearing Buddies for a 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 # BB2080 that you referenced are for hubs with a 2.080 inch hub bore. When...
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  • Finding The Right Size Bearing Buddy For Utility Trailer
  • You'll need to use an accurate measuring device like a digital caliper to measure the inside diameter of the hub bore. A ruler or tape measure wouldn't be accurate enough. I have attached a photo of a hub that shows where the measurement should be taken. If you measure and find the opening to be 1.98 inches then the Bearing Buddy I recommend is part # BB1980A-SS. If you find that the inside hub bore measures 2.047 inches, part # BB2047SS would work well for you. If you find that...
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  • Bearing Buddies for a Diamond B Trailer with 1.98 Inch Hub Bore
  • For a 1.98 hub bore you have several options for bearing protectors. From Bearing Buddy you can use # BB1980A-SS for stainless steel, # BB1980A for chrome-plated, or # BB1980T-SS for stainless if you need a model that threads in. From Pilot you could use # BC-190. And from Kodiak you could use # KREB1980AC.
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  • How to Pick Out Bearing Buddies for a Small 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 that you referenced are for hubs with a 1.98 inch hub bore.
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  • Grease Cap Recommendation for Hub Bore of 2.3125
  • Sounds like the part # F001926 would work as a standard grease cap as it is designed to fit hub bores of 2.333. However, this is a pretty short cap at only 1.281 inches. The other solution you have would be a Bearing Buddy like part # BB2328. This is designed to fit hub bores of 2.328. Bearing Buddies are similar to grease caps, except they have a zerk fitting on them that allow the spindle to be lubed easily.
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  • Using Bearing Buddies on 10K Axle With Oil Bath Hubs
  • Although they're most frequently used on boat trailers, you can use a Bearing Buddy on just about any trailer. You'll want to make sure to install a double lip grease seal, and be careful not to overfill hub. Even with a double lip seal, many folks tend to overfill their hubs and end up blowing out the seal (myself included.) I did some research, and found that the hub bore of the typical 10K axle is around 3.5 to 4.3 inches in diameter, which is larger than any of the Bearing Buddies...
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  • Which Bearing Buddy and Grease for 1700 Lbs Carry-on Utility Trailer
  • Although bearing buddies are primarily meant for boat or PWC trailers, you can certainly use them on a utility trailer. To choose the correct diameter Bearing Buddy use a precise measuring tool like a dial caliper and measure the inner diameter on the hub where the grease cap sits. You will want to match that measurement as closely as possible to the measurement on the Bearing Buddy product pages. I have attached a link to all of our bearing protectors for you to reference. The alternative...
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  • Do you Carry TruRyde 1.986-Inch Outer Diameter EZ Lube Drive-In Grease Caps
  • Yes, the TruRyde 1.986-Inch Outer Diameter EZ Lube Drive-In Grease Caps (with plugs), part # RG04-040, are available from etrailer. These are sold as a set of two. We also offer a driver tool to simplify installation, part # 290-991.
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  • Issue with Bearing Buddy Leaking Grease from Overfill Port
  • Generally speaking bearing grease has so little water in it that significant expansion due to freezing temperatures is unlikely. Higher operating temperatures within the hubs while underway would potentially thin the grease but again not cause much in the way of expansion of its volume. Typically Bearing Buddies are used on boat trailers to keep water out of the hubs. Since boat trailers are not often used in extreme cold weather this may be why we have not heard of thermal issues like...
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  • Bearing Buddies Needed for Al-KO 7200 lb Hubs
  • To determine which Bearing Buddy you need, you'll either need to measure the hub bore (inside diameter of hub where grease cap inserts) or provide me with the outer wheel bearing reference number. With the bearing number, I can find the corresponding race for the bearing. The race's outside diameter will match the diameter of bearing protector you'll need. I would recommend replacing the grease seal as well. Use a double lip seal to help prevent blow-out. To determine which seal you'll...
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  • How to Remove a Bearing Protector from a Trailer Hub
  • Bearing protectors like Bearing Buddies are a very tight fit in a hub. If you cannot wiggle it out by hand then using a rubber mallet and tapping it (not hard but firm) first on the left, then the right, then the top, then the bottom, then repeat, will help loosen it up so you can pull it off. I have included a link to a video as well that should help. Removal of the Bearing Buddy takes place right in the beginning of the video.
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  • Replacement Rubber Oil Cap Kit for AL-KO 8K Axle
  • We do offer a Replacement Rubber Oil Cap Kit for AL-KO 8K axles, part # RG04-290, which includes the cap, gasket and plug. This fits AL-KO and Hayes 8k-rated axles manufactured before January 1997. The rubber cap is not available alone.
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  • Grease Cap Recommendation for a Dexter 3,500 lb Trailer Hub
  • From the research I did it looks like the Dexter 3,500 lb capacity hubs that are designed for 10 x 2-1/4 inch brake assemblies have a grease cap opening of 1.986 inches so the correct cap would be the part # RG04-040. For a tool to make the install a bit easier you may also be interested in the part # 290-991. Prices are available at the links below.
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  • Installing Trailer Hub Bearing Protectors
  • It sounds like you may not have it seated all the way in your hub. You can use a small block of wood and place it against the Bearing Protector part # BC-190. Then tap the wood with a hammer until it is seated all the way in the hub. If the protectors are the incorrect size you will want to measure the hub opening and make sure you purchase the protectors that fit your hub size.
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  • Grease Cap Recommendation for an EZ Lube Spindle
  • You have EZ-lube spindles so a bearing buddy wouldn't be the right grease cap to use. 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. To pick out the correct grease cap you would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches...
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  • How to Pick Out Bearing Buddies for a Camper 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 that you referenced are for hubs with a 1.98 inch hub bore. If...
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  • Determining the Size of Grease Cap Needed for Axle
  • In order to determine the correct grease cap for your axle, you will need to measure the inner diameter of the hub where the grease cap presses in. I recommend using a dial caliper or another precise measuring tool since this measurement will have to be precise. Keep in mind that you will want your grease cap diameter just slightly larger than the inner diameter of the ring of your hub, but no more than about the 2 one hundredths of an inch, to ensure a secure fit. I have attached...
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  • Bearing Buddies to Fit Tandem Axle Trailer with 15 Inch Wheels with 5 on 5 Lug Pattern
  • To determine which Bearing Buddy will fit your trailer, we will need to know your outer bearing or race part number. The part number of your outer trailer bearing or race is located on the outer surface. I have included a photo that shows where to look for the part numbers. Once we know your outer bearing or seal number we can then determine the size of the Bearing Buddy protector that will work for you. If you are unable to determine the part numbers, you will need to measure the...
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  • What to Measure to Get the Correct Bearing Buddy
  • Sounds like you are trying to pick out the correct Bearing Buddy for your trailer's hub. To do this you will need to remove your current grease cap and measure the diameter of the hub bore. With that measurement you will be able to pick out the correct Bearing Buddy to fit your hub. The part # BB2441SS that you referenced would fit a hub bore of 2.441 inches, if that is what you have then this would be the correct one for you. If not, check out the link I attached that will take you...
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  • Bearing Buddy Recommendation for a 1.98 Inch Hub Bore
  • What you are looking to do is possible in theory, but we don't carry any hub/rotors that are for oil bath hubs like you are looking for so it wouldn't be a solution I could provide. The only solution I could provide for you would be to replace any lost Bearing Buddies with the # BB1980A-SS as these are confirmed to fit your 1.980 inch hub bore. You will want to make sure they are seated fully in your hubs as this is probably why your previous ones fell out. If you could find a hub/rotor...
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  • How To Measure to Pick Out Correct Bearing Buddy for Boat 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. You will want to use a dial caliper or a micrometer for this so that you get an exact measurement. I have included a video demonstrating the Bearing Buddy. The...
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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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  • 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.
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  • How to Pick Out a Grease Cap for a Trailer Hub on an Enclosed Trailer
  • We have several grease caps that could potentially work for the hub on the axle you have on your enclosed trailer, see link to the right. To pick out the correct size one you will need to know the pilot hole diameter on 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 with a dial...
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  • Bearing Buddy to Fit Titan Premier Disc Brake Kit # T2HRCM10DAC
  • The Titan Premier Disc Brake Kit # T2HRCM10DAC that you referenced has a hub bore of 1.980 inches, so you have identified the correct set of Bearing Buddy grease caps for use with it, part # BB1980A-SS.
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  • Bearing Protector Recommendations For Pop Up Camper
  • We do offer a few of the bearing protectors that have a 1.980 diameter. With the limited space you have you can take a measurement and see if one of the protectors we offer will work for you. The Pilot Trailer Hub Bearing Protectors, part # BC-190 is 2 inches, including 5/16 inches that seats in hub. The Kodiak Red Eye Bearing Protectors, part # KREB1980AC is 2-3/8 inches, including 3/8 inches that seats in hub The Bearing Buddy Bearing Protectors, part # BB1980A is 1-13/16...
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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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  • How to Pick Out a Grease Cap for a Dexter 8k Axle
  • You would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches the inside diameter of the hub. Some of the most common sizes are 1.980 inch, 1.986 inch, 2.441 inch and 2.717 inch. As you can see the sizes can differ by very small amounts. To measure accurately you may want to get a dial caliper so that you can be confident you are getting the correct size for your hub. I have included...
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  • Does the Grease Cap # RG04-040 Have a Zerk Fitting
  • The Grease Cap # RG04-040 that you referenced does not have a zerk fitting. It is designed for use on EZ lube axles that have zerk fittings on the end of the spindle. This cap has a rubber cap to allow for easy access to that fitting. You may be looking for a Bearing Buddy as those do have the zerk fitting. For a bearing buddy of the same size as the # RG04-040 you would want the part # BB1980A-SS.
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  • How to Determine the Correct Replacement Dust Caps for a 2011 Haulmark Cargo Trailer
  • To determine the correct dust caps for your trailer you will need to measure the inner diameter of the hub/drum where the cap fits. The measurement has to be as accurate as possible so you will need to use digital or dial calipers. If that measurement is 2.446 inches then cap set # RG04-060 will fit. I also can most likely figure out the correct one by going by the outer bearing number. You will not have to remove the hub/drum to get the number. You should be able to see it by removing...
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  • Can Bearing Buddys Install on an EZ Lube Spindle
  • If you wanted to install a bearing buddy like the part # BB1980A-SS on a EZ lube spindle you would first need to remove the zerk fitting.
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  • Grease Cap Recommendation to Replace AL KO Part Number 363277
  • I did some digging and based on the part number you referenced you need grease caps that have an outer diameter of 1.986 inches. Because of that you would want the part # RG04-040.
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  • Grease Caps for 1991 Dexter 8-201 Trailer Hub on EZ Lube Axle
  • If you are looking to replace the actual grease caps then we do not have one that has an outer diameter, where it fits into the hub, of 1.670. The closest is 1.781 which is a Bearing Buddy size and wouldn't fit an EZ lube axle. There are several different hubs with the 8-201 designation. If you can tell me the inner and outer bearing numbers stamped into the metal of the bearings I can determine if we have a grease cap that fits. If you are looking for the rubber cap at the end of...
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  • How to Select Bearing Buddies for 1966 Airstream 26 Tandem Axle Trailer
  • Given the age of your vintage Airstream it is possible that the hubs on it now are not the originals. In any case you can select appropriate-size Bearing Buddies based on the hub's bore. You will need to measure (with a precision digital caliper) the inner bore of the hubs, which is where the Bearing Buddy will be installed. You will need to measure the bore to the nearest thousandth of an inch, e.g. 1.980-inches. Once you know this dimension you can use the linked page to select a...
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  • How To Determine Which Bearing Protectors or Grease Caps for 1999 Triton Aluminum PWC Trailer
  • In order to recommend dust caps or bearing protectors, I'd need to know the outer wheel bearing reference number. You could also use an accurate measuring device like a digital caliper to measure the diameter of the hub bore. If you could reply with either, I'd be happy to make a recommendation. I've edited a photo for you showing the information I need to make a suggestion.
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  • How to Pick Out Grease Caps for a Trailer Hub
  • You will want to use a dial caliper or micrometer to measure the inner diameter of the hub you have on your trailer to determine what size cap would be needed. Check out the picture I attached that shows this measurement being taken on a hub. I attached a link to all the grease caps we offer, once you know what size you need check out the link I attached to see all the sizes we offer.
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  • Bearing Buddy Bearing Protectors for 1993 Wells Cargo Enclosed Bike Trailer
  • Bearing Buddy model # BB1980A will fit a hub bore of 1.98 inches. Or it might be easier to look at the outer bearing number, which you should be able to see without removing the hub. If the outer bearing is L44643, L44649, or L44640 then these Bearing Buddies will fit. If you decide to measure the hub bore you will need to use dial or digital calipers because the measurement has to be as accurate as possible.
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  • How to Measure a Trailer Hub for the Correct Size Grease Cap
  • You would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches the inside diameter of the hub. Some of the most common sizes are 1.980 inch, 1.986 inch, 2.441 inch and 2.717 inch. As you can see the sizes can differ by very small amounts. To measure accurately you may want to get a dial caliper so that you can be confident you are getting the correct size for your hub. I have included...
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  • Grease Cap Recommendation to Replace Cap with Lost Plug
  • We do not have any grease cap plugs that are designed to fit a 1-1/2 inch opening. The only recommendation I could give you would be to get a new grease cap. To pick out the correct grease cap you will need to remove your current one and measure the distance of the opening on your hub with a dial caliper or micrometer. I attached a page that has all of the EZ lube grease caps we offer that have plugs in them.
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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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  • Replacement Oil Bath Cap for AL/KO 10 K Axle w/ 3-3/4 Inch O.D.
  • We have exactly what you need. Take a look at part # RG04-250, which is designed for AL/KO 10 or 12K axles and has a 3-3/4 inch outside diameter.
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  • If a Wheel Has a Hub Cap is a Grease Cap Needed Still
  • You still need a grease cap if your wheel has a hub cap. A hub cap is purely a decorative item to make a wheel look nicer. A grease cap actually serves a purpose by holding the grease of the hub in so that it stays lubricated. I attached a page that has all of our grease caps. To pick out one out you will need to measure the pilot hole of your hub.
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  • Selecting a Bearing Buddy Bearing Protector for Utility Trailer with 2-1/3-Inch Hub Bore
  • In order to select a Bearing Buddy Bearing Protector such as # BB2328 you will need to know the hub bore to the nearest thousandth of an inch (three decimal places), e.g. 2.328-inches. Bearing Buddies come in many sizes and the differences between them can be quite small. Also, some have threads to allow use in threaded hubs. The best way to proceed is to use a precision digital caliper to take your measurement. You can then use the link provided to select a Bearing Buddy kit that has...
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  • How to Determine the Right Bearing Buddy Bearing Protector for 2-3/8 Inch Hub Bore
  • To choose the correct bearing protectors, if available, you will have to measure the hub opening using dial or digital calipers because the measurement has to be as exact as possible. Bearing protectors are measured to the thousandth of an inch (3 decimal places). None of the bearing protectors we carry are exactly 2-3/8 inches (2.375 inches) but # BB2328 and # BB2328SS are the closest at 2.328 inches. The next step up, # BB2441, at 2.441 inches would likely be too big if the measurement...
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  • Replacement Grease Caps for Trailers Using 2.70 and 3.35 Inch Diameter Caps
  • The best way to determine the grease cap needed would be to measure the inside diameter of the hub bore, where the grease caps sit. Grease caps are meant to fit tightly, and they're made of metal that's softer than the hubs, so they can deform and get bent up and not provide a consistent diameter when you go to measure them. For the 2.70 inch cap, a new cap would probably be just a bit larger, maybe 2.72 inches, as it'll compress a bit as you drive it in. For the 3.35 inch cap, we have...
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  • Choosing the Correct Grease Cap
  • At this time we do not carry a 2-1/8 inch diameter grease cap, however, we do have a few grease caps that are close to that measurement. I recommend using a precise measuring tool such as digital calipers to measure the inner diameter of your hub bore. This will give us an exact measurement as a starting point. Typically, when choosing a grease cap, you want to get an accurate measurement of the inner diameter of your hub bore and then choose a slightly larger grease cap. The next size...
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  • Bearing Buddy Recommendation for a Harbor Freight Trailer
  • 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.
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  • Need Grease Caps With Outer Diameter of 3.350 Inches
  • We do have standard grease caps (aka dust caps) in an outer diameter of 3.355 inches for a Nev-R-Lube axle, part # 75DC, and also in an outer diameter of 3.358 inches for a standard axle, part # F106122. Both are drive-in types whose slightly larger diameter will ensure a snug fit. The linked video may be helpful to you.
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  • Bearing Buddy Recommendation For Kodiak Disc Brake Assembly With 1.98 Inch Hub Bore
  • The Bearing Buddy you will need to order for the Kodiak Disc Brake Assembly, part # K1HR35DS, is part # BB1980A-SS. These are designed to work with a hub bore that measures 1.98 inches, and have a lifetime warranty. I have included a link to an installation video you can check out.
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  • How to Pick Out Bearing Buddy for a 5th Wheel 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 with a mircometer. I have included a video demonstrating the Bearing Buddy. The Bearing Buddies # BB1980A-SS that you referenced are for hubs with a...
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  • Bearing Protector Not Wanting to Fit Into Hub Bore
  • Believe it or not, the outside diameter of the Bearing Buddy is designed to be a bit larger than the inside diameter of the hub bore. Typically, a Bearing Buddy sized to fit a 1.98 hub bore will actually be about 1.986 in diameter, which means yours is about right. As long as the inside diameter of the hub bore is between 1.980 - 1.983, you should be able to drive that bearing into place using a scrap of wood between the bearing protector and the hammer. I've installed a few of the...
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  • Bearing Buddy Recommendation to Replace a 2-3/32 Diameter Grease Cap
  • If the measurement you listed (2-3/32 inches) the only caps we offer that would work would be a Bearing Buddy part # BB2080SS. We do not have any standard grease caps that would fit.
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  • How To Determine Correct Hub Assembly For a 17-Foot Boat Trailer
  • The easiest way to determine what hub assembly you will need is to get the part numbers of the inner and outer bearings and the grease seal part number from the hub assembly that is on the trailer now. If you do not have the old bearings, you will need to measure the spindle on your trailer to determine the size bearings that you will need, and what hub assembly will work. Trailer hub assemblies are not a universal fit. If you can let me know the part numbers of your bearings and grease...
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  • Is 2.33 Inch Grease Cap With Plug Available For Boat Trailer
  • In order to determine the correct size grease cap, the best thing to do would be to take apart one of the hubs and get the outer bearing and race numbers. You can also get the hub bore inner diameter using dial calipers for the most accurate measurement. I have attached a link to the grease caps we offer with the removable plug, but none of these match the 2.33 diameter. The only grease cap we offer that will fit a 2.33 inch opening is the Fulton Grease Cap, part # F001926. This cap...
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  • How to Grease Boat Trailer Wheel Bearings on Trailer that Has Rubber Flange on Grease Cap
  • It is a good idea to inspect and lubricate your trailer bearings at least once per year at the start of the season. If your trailer has a grease cap like # DC200L-DCRP but does not have EZ-Lube spindles with a zerk grease fitting to allow use of a grease gun it may be that these caps were added in place of standard grease caps. In this case you will need to remove and re-pack your bearings with fresh marine grease like # L11404 as outlined in the linked video and article. If you wish...
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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 to Pick out Bearing Buddies
  • Sounds like your trailer has Bearing Buddies like the part # BB1810SS that you referenced. 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...
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  • Replacement Grease Caps for 2007 Rockwood Freedom Model 2280 Tent Camper
  • Replacement grease caps can be selected by measuring the diameter of your hub's bore. There are also several types offered. Trailer manufacturers may change some of the components they use on any given product; the only way to know the exact original part is to contact Rockwood with your camper's VIN number. An easier way is to use a precision digital caliper to measure the bore of your hubs. Once you know that you can use the link provided to choose both the type and size you need.
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  • EZ-Lube Grease Caps for Travel Trailer
  • It sounds like your travel trailer may use EZ-Lube spindles that have a grease zerk fitting. We offer several sizes of EZ-Lube grease caps. You can use the link provided to see all, and simply then click on the outer diameter that matches your hubs. If you require the actual bearing protectors themselves you can use the other link provided to search based on your hub's bore diameter and whether or not they are threaded. The filters in the left-hand margin will let you sort the results...
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  • Will the Bearing Buddy part # BB2047 fit a Harbor Freight Trailer 5002
  • It should, we have found that the Bearing Buddy part # BB2047 fits several Harbor Freight Trailers. Including the following trailers 90154 42709 90153 42708 2575 2948
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  • Which Bearing Buddy for a 1989 Karavan Jet Ski Trailer with 1.97 Inc Diameter Grease Cap
  • If your existing grease cap is marked 1.97, you're probably needing Bearing Buddies for a 1.98 inch hub bore. The stainless steel model, part # BB1980A-SS would be ideal. Bearing Buddies and grease caps are meant to fit tightly, so be sure to verify the diameter of your hub bore. A digital caliper is best for this, as a ruler or tape measure usually isn't accurate enough. Bearing Buddies are only compatible with standard spindles, not EZ-Lube Spindles with the grease zerk.
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  • How Do I Determine What Bearing Buddy Bearing Protectors I Need for My 2006 Pilgrim Cirrus Camper
  • In order to see if the Bearing Buddy Bearing Protectors, # BB2441, are the correct ones for your trailer, you will need to measure the inner diameter of your hub bore. This measurement needs to be very accurate so you will want to use a dial caliper. If the inner diameter of your hub bore is 2.441 inches, # BB2441 will work for you. If it is not, I am attaching a link to all of the Bearing Buddy Bearing Protectors that we have available. Take your measurement and match it to one...
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  • Are Bearing Buddies Compatible with Standard Trailer Bearings and Seals
  • All you need to do to install and use the Bearing Buddy Protectors part # BB1980A is remove your current caps like you did and install the # BB1980A. This product will work with your current bearings and seals just fine.
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  • Bearing Buddy to Fit Boat Trailer Hub with 1.9-Inch Threaded Hub Bore
  • The Bearing Buddy Threaded Bearing Protectors you referenced, part # BB1980T-SS, are the only ones that are close to your hub bore measurement of 1.9-inches. The other two sizes are both over 2-inches. These should fit your threaded hubs. Please note that the depth of the threaded portion of this part is 5/16ths of an inch. Bearing Buddy recommends using Perma-tex or another grease proof gasket cement when installing these bearing protectors.
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  • Comparing TruRyde and Fulton Grease Caps for Trailer Hubs with 1.988 Inch Bore
  • There is basically no difference between dust cap set # RG04-020 and single cap # F001518 other than # F001518 is a single unit and # RG04-020. They otherwise have the same dimensions just from two different manufacturers.
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  • Will Bearing Buddy Bearing Protectors Fit a Harbor Freight Trailer with 2.0625 Inch Hub Bore
  • The Harbor Freight trailers often have uncommon parts on them. This is likely the case with your trailer since there are no bearing protectors that match the hub bore you mentioned. The closest match is a Model 2080 such as # BB2080SS. They measure 2.080 inches. It may not seem like a big difference but for products like these, it really is. I recommend checking the measurement again, maybe on the other hub, to see if it isn't closer to 2.080. You can also check the outer bearing number...
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  • Looking for Oil Cap to Replace Dexter 21-17
  • I have been unable to find a replacement for a 21-17 Oil Cap (even on Dexter's website), but if you'll use a digital caliper to get the dimension of your hub bore, I'd be happy to continue looking for you. The measurement needs to be precise, a ruler or measuring tape wouldn't be accurate enough. I'll also need to know if your hub bore is threaded.
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  • Which Bearing Buddy Will Fit Trailer With Hub Bore Diameter Of 2.328
  • The Bearing Buddy that has the closest dimension to the size you referenced is part # BB2328. This Bearing Buddy is designed to fit hubs with an inner diameter of 2.328. If you can let me know what the outer bearing number is you have installed on your trailer, we can check to make sure this Bearing Buddy would work for you.
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  • How to Pick out Bearing Buddies
  • 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 that you referenced are for hubs with a 1.781 inch hub bore.
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  • Available Wheel Center Caps When Using Grease Cap, # RG04-040
  • The only style cover that we have available for the Grease Cap, # RG04-040, would be wheel center caps. I am including a link to all of the center caps that we currently have available. There are no bra style covers available for the grease cap.
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  • Availability of Grease Caps or Bearing Buddies for Craftsman Lawn Tractor
  • If you can reply with the inside diameter of the hub bore, I'd be happy to check if we offer any grease caps or Bearing Buddies that would work. You'll need to use an accurate measuring device like a digital caliper. A ruler or tape measure wouldn't be accurate enough.
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  • Choosing Bearing Buddies for 2003 Keystone 28 BHS Travel Trailer
  • Bearing Buddies are selected based on a precise measurement of your trailer hubs' bore. It is necessary to take this measurement with a digital caliper since the fit of a Bearing Buddy needs to be quite exact. The link provided will take you to our main page for all sizes. You can use your measurement of the hub bore to match the appropriate set of Bearing Buddies. Sets are available in both chrome-finish and stainless steel versions. Most Bearing Buddy sets are non-threaded, but threaded...
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  • Need a Grease Cap / Hub Dust Cap to Fit Dexter 10 Inch Drums
  • If you have a standard spindle you will use Grease Cap, # RG04-020, on your 10 inch drum. For an E-Z Lube spindle, Grease Cap, # RG04-040, would be used.
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  • How to Measure a Hub to Determine the Right Grease Cap to Use
  • To measure for a grease cap you will need to use something that can provide a very accurate measurement such as dial or digital calipers. Then you will measure the diameter at the center of the hub where the grease cap will fit. Grease cap # DC250L-DCRP would fit a 2.44 hub bore. I have included a picture that shows where to measure. Another way that you can determine the grease cap needed is to pull the hub and get the inner and outer bearing numbers stamped into the metal of the bearings....
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  • How to Determine if the Grease Cap for a Hub
  • If you are looking for a grease cap PLUG with the TRP stamped on it chances are the Grease Cap Plug for E-Z Lube Grease Caps # RG04-010 would work for you, but to be certain you will want to measure the diameter of the grease cap hole. If it is 1.18 inches across then the # RG04-010 would work for you. If you only needed one cap you would want the # DC-RP. If you are looking for the whole cap you would need to check out the picture I attached that shows where exactly to measure to...
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  • Do Tru Ryde Grease Caps come with Grease Plugs
  • I went out to the warehouse and pulled the Tru Ryde Grease Cap # RG04-040 and yes they do come with the black plug. I have made a video which shows the grease caps with and without the plugs installed.
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  • Bearing Buddies for 8000 LB Arctic Trailer
  • In order to choose the correct model Bearing Buddies for your trailer, you would need to determine the inside diameter of the hub bore. You would need to use a digital caliper to get the hub bore measurement, as a ruler or measuring tape would not be accurate enough. Once you know the hub bore, you can use the provided link to find the correct Bearing Buddy. With the hub bore diameter, you can use the link to go to the bearing protector product page, where you can use the filters on...
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  • Determining Bearing Buddy Size For Folding Trailer
  • The best way to find the correct Bearing Buddy for your folding trailer is by checking the numbers on the outer bearing. I have attached a photo that shows where the numbers can typically be found. You can use those numbers to find the correct Bearing buddy that will work for you. Another way to find the correct Bearing Buddy is by measuring the hub bore. You will need a caliper to get an accurate measurement. After getting the measurement you can choose the Bearing Buddy that fits....
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  • Are Other Parts Needed to Install Bearing Buddy Bearing Protectors # BB1980A-SS
  • The Bearing Buddy Bearing Protectors you referenced, part # BB1980A-SS, do not require other parts for installation on your trailer hubs. What is important is that your current trailer hubs have the correct bore for these parts, 1.980-inches as measured with a digital caliper, and that your outer bearing number matches one of the three that are compatible with this Bearing Buddy kit: L-44643, L-44649 or L-44640. Also please note that Bearing Buddies cannot be used on EZ-Lube spindles...
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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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  • Correct Grease Caps for an Axle Equipped with a Grease Zerk
  • It sounds like you have an EZ Lube type of spindle, that has a grease zerk on the spindle. You are correct that the standard grease caps do not provide the proper clearance for this style of spindle. With the bearing numbers that you provided I was able to determine that outer diameter of the grease cap that you will need is 1.986 inches. Then the correct grease cap fitting for your is the TruRyde EZ Lube Grease Cap # RG04-040. These grease caps have a removable rubber center portion...
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  • Bearing Buddies for a Bearing with 1.625 Inner Diameter on a Motorcycle Trailer
  • Bearing measurements have to be as precise as possible so if you are not using dial or digital calipers you will want to get some. But that is only if you cannot read the bearing number on the outer bearing. It should be stamped into the metal of the bearing. The diameter of the Bearing Buddies is its outer diameter where it fits into the end of the hub. It is actually slightly larger than the opening because you need a very tight fit. If your outer bearing number is # LM-11949 then...
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  • How to Determine Correct Bearing Buddy for 1994 Ranger Trailer with Outer Race # 68110
  • The outer race number you provided, 68110, corresponds to part # L68110 from TruRyde. This race works with bearing # L68149 and has an outer diameter of 2.327 inches. The Bearing Buddy with the closest diameter to this is part # BB2328, which is a chrome-plated pair of bearing protectors that fits a hub bore of 2.328 inches. We also offer a stainless-steel version, part # BB2328SS. You will need to confirm either the outer bearing number from your trailer spindle or take a precise...
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  • Bearing Buddy Recommendation that is the Next Size Smaller than the # BB2240
  • The next smaller size Bearing Buddy from the Bearing Buddy part # BB2240 that you referenced would be the Bearing Buddy # BB2080. I attached a link to a page that has all of the Bearing Buddies we offer.
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  • Does 6 Thousandths of an Inch Difference Matter when Replacing Dust Caps on a Trailer
  • When it comes to hubs 6 thousandths of an inch can make a difference between a fit and not a fit. But for grease caps it is not going to matter much. The fit needs to be tight so they do not fall out. So you can use # RG04-040 that you have referenced. I also recommend driver tool # 290-991 to ensure you get the caps in straight.
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  • How to Determine if the Oil Cap Kit # RG04-270 Would fit Hubs
  • The Oil Cap Kit # RG04-270 that you referenced is designed to fit the following axles: Dexter 9K (after 10/1989), 10K GD (2-piece drum), and 10K to 15K Dexter axles. You will need to confirm that you have one of those axles to know if the # RG04-270 would work for you. There should be a plaque or sticker on the frame of your trailer near the coupler that should list what axles you have. There might also be the same on the axles themselves for you to determine which one.
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  • How Do I Determine Which Bearing Buddy Bearing Protector Will Fit My Aspen Motorcycle Trailer
  • The best way to make sure you receive the correct Bearing Buddy bearing protector is to measure the inner diameter of the hub bore (see photo). Unfortunately, the manufacturer of Aspen trailers does not provide much information about their trailers or replacement parts, so I was not able to obtain the OEM grease cap size that Aspen uses. I strongly recommend measuring the hub bore with a precise measuring tool such as a dial caliper because hub bores can vary down to the thousandths...
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  • How to Determine Which Bearing Buddy Set Will Fit a Boat Trailer
  • There are 2 ways to determine what size Bearing Buddy you will need for a given trailer hub. First and most accurate is to get the outer bearing number off of the bearing. You can do this without removing the hub. You just need to be able to see the outside of the outer bearing. Wipe away the grease to see the number stamped into the side. With that number I can determine if there is an option available. The other way is to measure the hub center hole using a set of dial or digital calipers....
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  • Bearing Buddy for 1.98 and 2.13 Inch Trailer Hub Center Hole
  • First I would get the hubs matched up because if they are different sizes that can lead to uneven wear of the tires and suspension components. Not to mention you would have to buy two sets of replacement parts all the time. But if the 2 hubs are on two different axles, that makes more sense. We have a lot of options for the 1.98 size. I have included a link to them on the right. For just a regular set use # BB1980A. The 2.13 is more difficult because it is in between sizes. If you...
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  • Bearing Buddies for Trailer with Inner Bearing L68149 and Outer Bearing L44649
  • Are you sure the outer bearing is not L44649? If it is then you can use # BB1980A-SS or # BB1980A. With an inner bearing of L68149 the matching outer bearing is most likely L44649.
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  • Can Trailer Dust Caps, Grease Caps, and Bearing Protectors Fall Off By Themselves
  • Dust covers can indeed fall off on their own if they are not driven in correctly. If they are crooked then what happens is when the wheels are turning the cover will look like its wobbling (like a washing machine off balance) and gradually it being off center will cause it to work itself free. It is possible that the shop did not drive them in all the way. This seems to happen more with bearing protectors like # BB1781 that you have referenced because they can be a little more tricky...
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  • What Size Grease Cap Will Fit 1.95-inch Hub and EZ-Lube Spindles
  • You identified the correct grease cap, part # RG04-040. This is sold as a set of two caps. If you ever need replacement rubber plugs we also offer these as a set of two, part # RG04-010. Since your trailer uses EZ-Lube zerk fittings on the spindles you will be better off with a grease cap that has a removable plug. This will enable you to get quick access to the grease fitting without having to take off the grease caps. If you want to simplify installation of the grease caps you might...
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  • Determining Size of Bearing Protector Needed for 2001 Load Rite Trailer
  • The best way to determine the size of bearing buddy needed would be to take a highly accurate measurement of your hub bore using a digital caliper. I have edited a photo for you that shows this dimension. If you happened to know the reference number from your outer wheel bearings, the proper bearing protector could be determined. If you would care to reply with either the hub bore dimension or the outer bearing number, I would be happy to suggest a bearing protector for you.
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