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Expert Answers about Grease Caps


  • Bearing Buddy Available for Hub Bore that Measures 1-7/8 inches
  • 7/8 of an inch in decimal form is .875 of an inch. The closest Bearing Buddy we have to that would be the # BB1810 which measures 1.810 inches. You might remeasure with a digital or dial caliper like part # PTW80157.
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  • Replacement Caps for Oil Bath Hub With 2-3/4 Inch Diameter at the Threads
  • We do offer a grease cap for an oil bath hub that has a 2-7/8 inch diameter at the threads, part # RG04-230, however the total height of the cap is 1-3/4 inches. This is the closest thing we offer to the oil bath cap you referenced.
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  • How to Pick Out Grease Cap for an Older Boat Trailer
  • 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. You will notice that the bore of the hub is tapered like yours. 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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  • Recommended Replacement Oil Bath Cap Kit for Dexter 21-36
  • My contact at Dexter Axle confirmed that Oil Cap Kit # RG04-270 is a correct replacement for the older part reference 21-36 which is now discontinued. Both oil caps have the same 4-inch diameter and are fully interchangeable. The only difference is where the oil line is located.
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  • How to Pick Out Replacement Grease Caps for EZ Lube Spindle Grease Cap
  • 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 that have the EZ lube style cap that allows for easy application of grease to EZ lube spindles.
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  • Rubber Plug Recommendation for the Grease Cap # 21-41-1
  • The rubber cap needed to use with the # 21-41-1 is the part # RG04-010. It does not come with the cap.
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  • Measuring Trailer Hub Bore to Determine Size of Replacement Grease Caps
  • We have all of our trailer wheel center caps available for viewing on the linked page. We offer both standard grease caps like # F001508 and Bearing Buddy bearing protectors like # BB2080. You'll need to take a precise measurement of your hub's bore where the grease cap will install. This is a more reliable method than measuring the old grease cap. We offer digital calipers like # PTW80157 and # ALL641130 for taking that measurement. You'll need to take your measurement to three decimal...
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  • How to Pick Out Bearing Buddy for a Trailer Hub
  • In order to pick out the correct bearing buddy you will need know the hub bore 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 # BB1810SS that you referenced are for hubs with a 1.81 inch hub bore. The...
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  • Parts Included in Kodiak XL ProLube Kit for 3500-lb Axles XLPROLUBE1980KIT
  • The Kodiak XL ProLube Kit for 3500-lb Axles # XLPROLUBE1980KIT does include the bottle of bearing lubricant, two inner oil seals for a 1.72-inch spindle and two oil bath caps that fit a 1.98-inch hub bore. The actual hubs themselves that you wheels mount to are not included.
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  • Will Bearing Buddy # BB2717 Work With AL-KO 7,000-Lb Axle
  • You will want to use a digital caliper like part # PTW80157 to measure the inside dimension of your hub to make sure you get the correct Bearing Buddy. The Bearing Buddy Bearing Protectors, part # BB2717 are designed to fit a hub bore that is 2.717 inches diameter. If your outer bearing is a # 14125A, then the # BB2717 would work for you.
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  • Replacement Bearings and Axle Parts for Imported Utility Trailer
  • You have discovered the dark side of "bargain" import trailers: non-standard and tough-to-find replacement parts. You are correct that the nearest diameter size of Bearing Buddy to your 2.040-inch measurement is the 2.047-inch size like # BB2047 (in chrome finish) and # BB2047SS (in stainless steel). I also checked our standard grease caps, shown on the linked page, and these too do not offer a perfect match to your hub bore. A difference of 7/1000ths of an inch in diameter is a...
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  • Are Bearing Buddy Bearing Protectors Available in Multiple Sizes
  • Yes, we offer Bearing Buddy bearing protectors in various diameters to fit a range of hub bores. The best way to confirm the correct size you need is to use your micrometer/digital caliper to measure the hub's bore. Bearing Buddy kits are sized for the most popular hub dimensions. All such products are viewable by clicking on the link provided. Just click on your hub bore dimension to see the appropriate part. Each kit includes two Bearing Buddy grease caps and two rubber covers.
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  • Grease Cap Recommendation for a Trailer Hub part # 34822BX
  • Yes, the Grease Cap # F001518 that you referenced is the correct one to use as a replacement for the Trailer Hub part # 34822BX that you also mentioned.
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  • Replacement Oil Seal and Oil Cap for Reliable Oil Hubs on 2004 Mastercraft Trailer
  • To replace the oil caps on your trailer, you can use the Kodiak XL ProLube Oil Bath Hub Body and Cap, 1.98 Inch # xlprolube1980. This oil cap replaces the body and cap, with the cap being made from a blue polycarbonate. Based on the outer diameter of your existing covers, the # xlprolube1980 will work well for you. To find the correct replacement oil seal for you, we will need to know the inner and outer diameters of the oil seal. To be as exact as possible, these measurements should...
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  • How to Measure Bearing Buddy to Pick Out Bra
  • What you can do is measure the outside diameter of the Bearing Buddy with a digital or dial caliper and then you can pick out a bra for it based on that. So if yours measures right at 2 inches in diameter for example you would want the part # BB19B. If it's 1.7 inches you would want the # BB17B or 2.3 inches part # BB23B.
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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 # ALL641130, to measure the hub bore of your...
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  • How To Determine What Bearing Buddy Bearing Protectors Will Work With Trailer Hub
  • A tape measure is really not the best way to measure the hub bore on your trailer to find the right size Bearing Buddy. I recommend a digital caliper like part # PTW80157 to make sure you get the most accurate measurement. If you find your hub bore measure 1.781 inches then part # BB1781 would work great for your trailer. If your hub bore measures 1.980 inches, part # BB1980A would be a great fit.
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  • Replacement Bearing Buddy Bra for Bearing Buddies that are 2-5/8 Inch in Diameter
  • Based on your measurements you must have a larger Bearing Buddy so you would need # BB23B which has an outer diameter of 2-7/16 inches; the largest available. It fits on Bearing Buddy models 2328, 2328SS, 2441, 2441SS, 2717, 2717SS, 2562, 2562SS, 2240 and 2240SS. There should be a sticker on the side of the Bearing Buddy that says what model it is unless that sticker has worn off.
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  • Bearing Buddy Recommendation for Trailer Hub with 1-15/16 inch Hub Bore
  • For your dust cap that measures 1-15/16 inches (1.937 inches), the Bearing Buddy part # BB1938 that you referenced would be the correct part confirmed to fit.
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  • Height of Grease Cap Designed to Fit 2.25 inch Hub Bore
  • The Fulton Grease cap part # F001508 that you referenced has an outer diameter of 2.25 inches and an overall height of 1-1/4 inches .
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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 # L10321 for the can and 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,...
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  • How to Pick Out Bearing Buddy for a Trailer Hub
  • Sounds like you are looking for a Bearing Buddy. But nothing we offer is for that small of a size. Not even standard grease caps are offered in that size either. It is possible you aren't measuring the correct area though. 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...
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  • Grease Cap Replacement Recommendation for a 363182
  • I was able to pull up the dimensions of the grease cap you are looking for, part number 363182 and found that it's dimensions match the part # F001518 so this cap would work well for you.
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  • How To Find The Correct Size Bearing Protector For A Trailer
  • The measurements listed for a Bearing Buddy like part # BB1980A-SS are for the inside diameter of the hub bore on your trailer that a bearing protector fits. The BB1980A-SS fits a hub bore that measures 1.980 inches diameter. If you use a digital caliper like part # PTW80157 to measure the diameter of your hub, you can find the correct bearing protector for your trailer in the attached link.
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  • Replacement Oil Cap for Oil Bath Trailer Hub w/ 3-3/4 Inch Outside Diameter
  • The # RG04-250 Threaded Cap for Oil Bath Hubs has an outside diameter of 3-3/4 inches measured at the threaded portion as shown in the photo and is designed for 10K Al/KO axles.
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  • Grease Cap Recommendation for Hub Bore of 1.96 inch
  • The part # RG04-020 might be barely too tight of a fit. Instead you would want the part # F001527 which is designed for fitting 1.96 bores on hubs like what you have. The overall height of this is 1.375 inches.
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  • How to Pick Out Replacement Dust Caps for a Trailer that Previously Had Bearing Buddies
  • If the bore you measured on your hub measures 1.980 inches then the correct cap would be to use the RG04-020. You will need to use a more exact measuring device than a ruler though like the caliper part # PTW80157 since it has to be an exact fit. Once you have an exact dimension check out the link I attached that will take you to a page that has all of the grease caps we offer. The filters will allow you to select the correct caps.
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  • Bearing Buddy and Spindle Grease Seal Set Recommendation for 3,500 Pound Axle Trailer
  • Typically, 3,500 pound axles use an inner bearing # L68149. However, it is a good idea to double check that this is the inner bearing on your trailer. For a trailer that has an inner bearing of L68149 with a 1.980 Bearing Buddy, you will want to use the Spindle Grease Seal Set # BB60002. It looks like you previously ordered the Titan Disc Brake Kit # T4843100. This kit uses the L68149 inner bearing. For these disc brakes with the 1.980 Bearing Buddy, the # BB60002 grease seal set will...
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  • How to Determine What Replacement Grease Cap is Needed For a Premier Dual Axle Dump Trailer
  • I'm assuming you're speaking of a grease cap that's driven into the hub bore. Grease caps are available in different sizes. There are two good ways to determine which size you need. One is to locate the reference number off of the outer wheel bearing. Finding the outer wheel bearing would lead me to the reference number of the race, which would lead me to the grease cover diameter. Or, you could use a digital caliper like # PTW80157 and measure the inside diameter of the hub bore, as...
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  • How to Pick Out a Bearing Buddy for a Echo ATV Trailer
  • I wasn't able to find out any info on your axles but you can still measure your current hubs to determine which bearing buddy you would need. Taking the measurement is really not that hard. 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...
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  • Recommended Grease Cap That Fits Dexter Axle Trailer Hub and Drum Assembly # 42656
  • The grease cap that will work with the Dexter Axle Trailer Hub and Drum Assembly, part # 42656 is part # RG04-060. These grease caps have a 2.446 inch O.D. and are made of 22-gauge zinc-coated steel.
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  • How to Pick Out Replacement Bearing Buddy
  • 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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  • Troubleshooting a Loose Bearing Buddy Fit
  • Unfortunately, the bearing buddy cannot be expanded in any way. What you would want to do to ensure a good fit for your bearing buddy to the hub would be to measure the inner diameter of the hub bore with a dial caliper # ALL641130. Once you obtain the proper hub bore diameter then you will want to choose a bearing buddy based on that measurement. The next size up bearing buddy for your hub would be the # BB2047. I have added a few videos for your convenience.
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  • Grease Compatibility for Trailer Wheel Bearings
  • You are correct about greases; some do not work well with others. Out of the greases that we carry the type with the most compatibility is red grease # L11390. It is compatible with the following grease types: Aluminum Complex Calcium Stearate Calcium 12-Hydroxystearate Calcium Complex Calcium Sulfonate Complex Lithium Stearate Lithium 12-Hydroxystearate Polyurea (LUB-LM Type) (This would be the most compatible but we do not carry this type) Ideally you would completely remove...
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  • Replacement Cap Recommendation for Tow Power Bearing Protector for 1.980 inch Hub Bore
  • What you will want for a replacement cover for your Towpower bearing protector is the part # BB19B. This part fits the exact same diameter bearing protector as what you have and will work well.
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  • Solution for Bearing Buddy that Won't Accept Grease
  • Moving the wheel could help allow the grease to make its way into the hub of your trailer, but it could also be a clogged zerk fitting. There isn't an easy way to unclog zerk fittings so you may just need to replace the Bearing Buddys with the part # BB1980A. It could be dried up grease on the other side of the Bearing Buddy too. You would want to remove them and try cleaning them from the inside.
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  • Do Bearing Buddies Allow Air to Escape as they Add Grease to Hub
  • The seals on a trailer hub are not air tight. If you are adding grease with a Kodiak Red Eye or Bearing Buddy like the part # BB1980A-SS that you referenced the grease will displace the air.
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  • XL Kodiak ProLube 1980 Castle Nut Washer Recommendation
  • Do you have an overly large castle nut washer? It seems odd that the washer is too big to fit in the cap of the # XLPROLUBE1980KIT. Since this kit is designed for 3.5k axles the correct replacement washer should be the # 5-23. This washer should be very similar in size to the castle nut.
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  • Trailer Grease Caps with Zerk Grease Fitting
  • Grease Cap set # RG04-040 are regular grease caps that have a rubber plug on the end to access a grease zerk fitting on the spindle (end of the axle). They install the same as regular grease caps. It sounds like you are looking for bearing protectors such as # BB1980A which are for regular spindles. I have linked a video review for you.
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  • Grease Cap Recommendation for Trailer Hub with 1.938 inch Bore
  • For your hub that has a bore of 1.938 you would want the part # F001524 which has an outer diameter of 1.943 inches. This will fit your hub well.
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  • Do Bearing Buddy Bearing Protectors Come with the Rubber Covers
  • Yes indeed. The Bearing Buddies, such as # BB1938, do come with the little bras/rubber covers. I have included a picture showing all for parts for you. Should you ever need some replacements in the future we have those, too; # BB19B.
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  • How To Find Correct Bearing Buddy For Yacht Club Boat Trailer
  • You will want to get a measurement that is as accurate as you can when measuring for Bearing Buddies. You can use a digital caliper like part # PTW80157 to measure the inside of the hub opening the Bearing Buddy is used on. If you find the inside measurement of your hub is 1.98 inches, part # BB1980A-SS would work well for you. Another way to find out what will work is to let me know the outside bearing number on your trailer. It is usually found stamped on the outside of the bearing...
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  • Bearing Buddy for Trailer Hub that Has Bearing Number of 25580
  • Since you didn't specify which bearing of your hub is 25580 I am fairly certain that the correct Bearing Buddy you would need would be the part # BB2717. But you will need to measure the bore where you old grease cap sits currently to verify that it is 2.71 inches in diameter.
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  • Bearing Buddy Recommendation for Hub Bore that is 2.079 Inches
  • 2.079 and 2.080 are very close. Close enough that the Bearing Buddy part # BB2080SS that you referenced would most likely fit and work just fine as it is designed to fit hub bores that are 2.080 inches.
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  • How to Pick Out Replace Grease Cap for 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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  • Measuring a Trailer Hub to Find the Right Bearing Buddies
  • Are the hubs the same part? Or different parts or manufacturers? Is the lo0ose side hub damaged at all? That is strange that the 1.781 would fit one side and not the other. To determine if # BB1810 will fit I recommend measuring the hub bore ahead of time. The measurement has to be as accurate as possible so use calipers, such as # PTW80157, to take the measurement.
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  • Bearing Buddy Slightly Larger than the BB2047
  • The next size up from the Bearing Buddy # BB2047 is the part # BB2080. This Bearing Buddy should be just what you need if the # BB2047 is a tiny bit too small.
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  • Available Grease Caps for Threaded Trailer Hubs With an Inner Bore Diameter of 3-5/8-Inches
  • It sounds like you may be looking for Bearing Buddys that will fit your threaded hubs. The standard drive-in grease caps you referenced, part # RG04-100, fit a non-threaded hub bore of 2.72-inches, a good bit smaller than yours. The standard grease cap nearest to your size is part # F001603 which fits a non-threaded hub bore of 3.882-inches. Bearing Buddy grease caps are available in sizes for hubs up to 2.717-inches inner diameter but none will fit your 3-5/8-inch hub bore.
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  • What Size Hub Will Accept Fulton Grease Cap # F001602
  • The Fulton Grease Cap # F001602 will fit a trailer hub with an inner bore diameter of 3.255-inches. For reference I have linked our main page for all grease caps which can be sorted by clicking on the filters on the page for their outer diameters, which will match up to your hub's bore diameter. The hub bore may be a few thousandths of an inch smaller than the cap.
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  • How to Measure a Trailer Hub or Dust Cap to Find the Right Replacement Dust Cap
  • You can measure either the outer diameter of the part of the dust cap that fits into the hub OR the inner diameter of the hub where the dust cap goes using calipers such as # PTW80157. Calipers are needed because the measurement has to be as accurate as possible. I also might be able to figure it out based on the outer bearing number which you should be able to see without taking the hub off.
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  • Will 1.986 Inch OD EZ Lube Dust Caps Work To Replace 1.98 OD Dust Caps
  • The EZ Lube Drive in Grease Cap with Plug # RG04-040 will work as replacements for your existing grease caps that have a 1.98 inch outer diameter.
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  • Bearing Buddy grease Caps For Trailer With Hub Bore that Measures 2-1/2 Inches Diameter
  • The Buddy Bearing Bra, part # 23B you mentioned you have can fit many of the Bearing Buddy grease caps. The best way to find a Bearing Buddy that will fit your hub is to use a digital caliper like part # ALL641130 and take an accurate measurement. We have a couple Bearing Buddys that are close to the size you said your hub bore is. The first is part # BB2441SS. These fit a hub bore that measures 2.44 inches. The next size up is part # BB2562SS. This will fit in a hub bore that measures...
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  • Bearing Buddy Recommendation for Trailer Hub # 8-248-50UC1
  • The Bearing Buddies that work with the Trailer Hub Assembly, part # 8-248-50UC1 are part # BB1980A-SS for stainless steel and part # BB1980A for chrome plated. These fit a hub bore that measures 1.98 inches inside diameter. These come with 2 Bearing Buddies in a package. These are a great way to keep water out and making sure you have enough grease in the hub.
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  • How and Where to Measure to Find a Replacement Grease Cap for a Trailer
  • You would measure the outside diameter of a grease cap or the inner diameter of the hub bore where the grease cap installs. But the measurement has to be as accurate as possible so you would need to use dial or digital calipers to take the measurement. Another option is to get at least the outer bearing number stamped into the side of the bearing. You should be able to see it without removing the hub by wiping away the grease. I have included a link to our grease cap main page for you...
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  • Finding the Correct Bearing Buddy For 1998 Jayco Pop-Up Camper
  • 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. Another way to find the correct Bearing Buddy is to measure. You will want to use a digital caliper to measure the inner diameter of the hub bore, where the grease cap sits. When choosing a Bearing Buddy, you will want to choose one that is a few thousandths...
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  • Threaded Bearing Buddies for 1.988 Inch Hub Bore
  • Bearing Buddies # BB1980T-SS are going to be the best match for your 1.988 hub bore. Nothing else we have comes close. These are threaded Bearing Buddies, the only option in this size that is threaded. For 2 pair you would just change the quantity to 2 in the quantity box before clicking add to cart.
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  • Bearing Buddies for a Boat Trailer with 2.308 Hub Bore
  • Losing grease/dust caps or bearing protectors is all too common. It usually happens when caps are not driven in properly. The spinning of the wheel and the centrifugal force then causes the caps to wiggle free and fall out. Given that your hub bore measures 2.308 inches the best match would be a 2.328 model such as # BB2328. It will be a tight fit, which is what you want. To drive them in flush place a block of wood against the Bearing Buddy and tap the wood all around, not just in...
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  • 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.
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  • How to Determine What Size Replacement Grease Caps Are Needed
  • For a replacement grease caps, I'd need the measurement of the hub bore. The measurement would need to be accurate to two or three decimal places, so a digital caliper is the best way to get the needed accuracy. If you don't have access to a digital caliper, if you can provide the reference number to the outermost wheel bearings, I can determine the diameter of grease cap you'd need. You can simply reply to this email.
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  • How To Pick Out Bearing Buddy for a Trailer Hub with 2.24 Bore
  • If the bore of your hub measures 2.25 inches or very close to it the correct Bearing Buddy would be the part # BB2240SS that you referenced. We have several jack wheels available, but none of them are universal. I attached a link to see them all, but you will need to know what jack brand/model to pick out the correct one.
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  • Redline Oil Cap And O-Ring Kit For Trailer With 9 Ton Axles
  • If you have 7,000 to 9,000 lb Dexter axles on your tri-axle trailer, the oil cap kit you need for each hub is part # RG04-230. These are designed to fit 7-9k axles with 8-bolt hubs and includes the oil cap, plug, and O-ring. Just to be sure it will work the threading measurement is 2-7/8 inches outside diameter. This kit will fit older 6K, 8K, and 9K Dexter axles before 10/1989. if you do not have 7K to 9K axles on your trailer let me know what size axles you have and I can...
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  • Bearing Buddy Recommendation for a Trailer Hub Bore of 2-3/8 inches
  • Most likely the measure you took would have been 2.240 inches had you used a digital or dial caliper so the correct Bearing Buddy would be the part # BB2240. You might recheck the measurement you took to be certain that it is 2.240 inches.
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  • Replacement Bearings and Bearing Buddies for ShoreLand'r Profile 2000
  • In order to find the correct replacement bearings and bearing buddies for your ShoreLand'r Profile 2000, we will need to know the current bearing part numbers. If you cannot find the part numbers, we will need to take some measurements. First, we will need to know the measurements of the bearing seats of the inner bearing and the outer bearing. To find these measurements, you will want to measure your spindle at locations C and D in the diagram I have attached. This will help us find...
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  • Tips for Inserting the Dexter Oil Hub Plug # 46-52
  • Rubber is it's softest when it is warm. I would try submerging the plug in hot water to get it as soft as possible. That should help you be able to slide it in. Putting a little bit of oil on the plug would help as well.
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  • Are Bearing Buddies Measured in Inches
  • I am not sure what you mean. Bearing Buddies are measured in inches. For example # BB1781 is 1.781 inches. Measurements have to be as accurate as possible so when measuring the opening on a hub for bearing protectors use dial or digital calipers, not a tape measure. I also might be able to figure out the size you need based on the outer bearing number stamped into the side of the bearing.
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  • Grease Cap Recommendation to Replace Cap that Measures 1.90 Inches
  • You would want the part # F001524 which has an outer diameter of 1.943 inches. This would install in your hub and provide a nice tight fit. The part # F001503 would be too small and wouldn't stay in your trailer hub.
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  • Bearing Buddy Recommendation for Hub Bore that is 2.328 inches
  • That would mean that you have a Bearing Buddy designed for a 2.328 inch hub bore and you would need the part # BB2328 as a replacement.
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  • Grease Cap Recommendation for Hub with 1-15/16 inch Hub Bore
  • The closest grease cap we offer to what you would need is the part # F001524 that is designed to fit hubs that are 1.943 inches. 1-15/16 inches in decimal form is 1.9375 inches.
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  • How to Measure for Correct Bearing Buddy Size
  • You will want to use a digital caliper to measure the inner diameter of the hub bore, where the grease cap sits. When choosing a Bearing Buddy, you will want to choose one that is a few thousandths of an inch larger than the hub bore opening. I have attached a link to all of our Bearing Buddy parts for you.
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  • Trailer Hub Grease Cap for Hub with 1.980 inch Opening
  • You would want the EZ Lube Drive in Plug with Cap part # RG04-040. This has been confirmed as a fit for trailer hubs that have a hub bore of 1.980 inch.
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  • What Brands of Bearings are Available
  • TruRyde and Redline are the two brands of bearings that we carry. According to my contact at TruRyde they come with a limited 3 year warranty.
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  • Where to Measure to Pick Out Bearing Buddy
  • 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. The Bearing Buddies # BB1980A-SS that you referenced are for hubs with a 1.98 inch hub bore.
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  • Bearing Buddy Recommendation for a Trailer Hub with 1.974 Bore
  • The closest bearing buddy we have would be the 1.980 part # BB1980A that it sounds like already tried. The next smallest size we have is the 1.968 part # BB1968 which unless you measured wrong would be too small. I am surprised you couldn't get the # BB1980A to fit. That should be close enough to make it work, it could be that you need to use a hammer and a board to lightly tap it into place.
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  • How to Pick Out Bearing Buddy for Trailer
  • Most Bearing Buddies are going to stick out about an 1-1/4 to 2 inches from the hub when installed. But that also depends on which ones you need to go with. We do not carry a longer version. 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...
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  • Can Hub That Had Bearing Buddy Installed Be Used on Axle With EZ Lube Spindle
  • The EZ Lube Spindle features includes a zerk fitting in the end of the spindle and holes in the spindle that allow grease to be injected into the hub bore. The only difference between the hubs we sell for an EZ Lube spindle and a standard spindle is the grease caps. The grease cap for an EZ lube spindle would have a removable rubber plug so you could access the grease zerk without having to remove the grease cap. The grease cap for a standard axle would not have the rubber plug. As long...
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  • How to Determine What Size Grease Cap is Needed
  • If you can provide the reference number for the OUTER wheel bearing, I can determine which replacement grease cap you actually need. You can also use a digital caliper to find the exact inside diameter of the hub bore. With a standard grease cap, the next larger size from the 1.98 inch is a 2.25 inch, which is quite a bit larger. If you're speaking of a bearing protector like the Bearing Buddy, the next largest size from the 1.98 is the 2.047 inch. If you click the provided link,...
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  • Replacement Trailer Hub Cap Recommendation for 2.25 inch Hub Bore
  • Sounds like you would need the part # F001508. This is designed to fit trailer hubs that have a 2.25 hub bore. You would want to verify that your hub bore is 2.25 inches with a digital or dial caliper.
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  • Recommended Replacement 1.975-Inch Dust Cap for Heartland Trailer with 3500-lb Axles
  • For a standard grease cap close to your original's 1.975-inch diameter you can use # F001527 which is 1.957-inches in diameter or part # F001610 which is 1.960-inches. If your hubs are not threaded, then for a Bearing Buddy protector you can use stainless steel part # BB1968SS or chrome-plated part # BB1968.
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  • 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,...
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  • How to Determine Correct Replacement Dust Caps for 2012 Karavan SeaDoo Move Trailer
  • I will be happy to help you out. There are a couple of ways you can determine which dust caps fit your Karavan-made trailer. First, you can measure the opening on the hub where the dust caps fit. The measurement has to be as accurate as possible so you will need to use dial or digital calipers. The other way is to retrieve the outer bearing number at least, if not both the inner and outer bearing numbers. The bearing numbers are stamped into the sides of the bearings. The outer one you...
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  • Recommended Bearing Buddy Bearing Protectors for Hubs with Bore of 1.986-Inches
  • It sounds like you are looking for a Bearing Buddy bearing protector with a grease zerk fitting for your hub that has a 1.986-inch inner diameter. We offer two choices for your pop-up, either chrome-plated Bearing Buddy # BB1968 or the stainless steel version # BB1968SS. Both kits include two Bearing Buddy protectors and two flexible covers. Take some care when initially filling the protectors with grease to avoid over-filling that could blow out your inner grease seal.
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  • Bearing Buddy Recommendation for a Shoreline Boat Trailer to Replace 2-5/16 Cap
  • The closest grease caps we have to what you would need would be the Bearing Buddies part # BB2328SS that fit a 2.328 hub bore which is very close to the cap dimensions you said you have. You might remeasure your caps with a digital or dial caliper to see if they are right at 2.328. The Bearing Buddies have a grease fitting on them so that would make greasing your hubs easy.
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  • Availability of Replacement Rubber Plugs for # DC200L-DCRP EZ Lube Grease Cap
  • You sure can, they're sold in pairs as part # RG04-010 or individually as part # DC-RP.
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  • Selecting Replacement Trailer Grease Caps Close to 2.1-Inches Outer Diameter
  • Trailer grease caps are offered in many sizes to fit a range of hub bore dimensions. Some of these sizes are very close to one another, such as 2.047-inches and 2.080 inches. It is best to measure to the nearest thousandth (three decimal points like the sizes above) to ensure a proper fit. This is easiest with a precision dial or digital caliper. All types of grease caps are shown on the linked page, including standard caps, E-Z Lube caps and Bearing Buddy bearing protectors. You can...
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  • What Could Cause a Trailer Oil Bath Cap to Crack
  • It is entirely possible that the cap for an oil bath hub could get warm enough that touching cold water could cause it to crack but the cap would have to be very hot for that to happen. It is unlikely that it would get that hot unless there was no oil in the hub so you will want to check that for sure. Also if the caps were over-tightened that could stress them and then, once moving, the centrifugal force could cause further damage. We have several different oil caps, see link, but...
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  • What is the Torque Rating for Trailer Hub Oil Cap Kit # 21-36
  • There isn't a special wrench that we carry for oil caps such as # RG04-270. But you probably won't need one because the manufacturer recommends to install the caps to 20-30 foot pounds. You might be able to get to that by hand. Otherwise some channel locks could work. Just be cautious to not over-tighten.
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  • How to Select Correct Bearing Buddy Bearing Protectors for 4 x 8 Trailer
  • I reviewed the online owner's manual for your folding utility trailer and no information is provided on hubs supplied, so to select Bearing Buddy protectors for it you will need to remove the existing grease caps and measure the inside hub bore with a precision dial or digital caliper. You will need to measure to the nearest thousandth - to 3 decimal places such as 1.810. Once you know this you can use the linked page to select the Bearing Buddy set closest in diameter. You will also...
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  • How to Pick Out a Threaded Bearing Buddy for Camper Trailer
  • You can still use one of our threaded Bearing Buddies as long as you measure the bore of your hub with a digital or dial caliper so that you get the right one. If you have a 1.98 diameter you would want the part # BB1980T-SS, 2.080 inch bore # BB2080T-SS, or 2.441 inch bore part # BB2441T-SS.
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  • How to Pick Out a Bearing Buddy for a Boat Trailer
  • Sounds like you have figured out which Bearing Buddy you would need and the # BB1980A-SS would work well for you. But just to be sure here is how you would pick out the correct one. 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...
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  • How to Determine Which Grease Caps are Needed for Starcraft Starstream Tent Camper
  • I don't have any reference material that would tell me what grease caps your tent camper used, but I can explain how you can determine the proper size. If you're speaking of a standard grease cap, we offer them in a zinc plated finish that's fairly shiny but couldn't be called chrome. To determine which one you'd need, you'll need to measure the inside diameter of the hub bore where the cap would install. this measurement would need to be very accurate, so a digital caliper should be...
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  • Choosing Bearing Buddy Bearing Protectors for Timeout Motorcycle Tent Trailer
  • Bearing Buddy bearing protectors are offered in many sizes to fit a wide range of hub bores. The linked page will show you all parts which you can sort based on the measurement you take of your hub bore. You want to choose the Bearing Buddy with an outer diameter that is closest to your hub bore measurement. Please refer to the linked photo for illustration of the needed measurement. You will need a precision digital or dial caliper to measure your hub bore to the nearest thousandth,...
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  • Bearing Protectors for a Trailer with a 1.950 Inch Hub Bore
  • The closest fit of any bearing protector we have to a 1.950 hub bore is going to be either # BB1968SS for stainless steel or # BB1968 for chrome plated. These are designed to fit a hub bore of 1.968 inches. Bearing protectors are often slightly larger than the hub bore for a tight fit. But 0.018 inches still might be too large to fit. Make sure that when you measure you are using dial or digital calipers for the most accurate measurement. It also might help if you can tell me the...
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  • 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...
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  • Why Do Bearing Buddies Fall Off of a Trailer Hub
  • If the Bearing Buddies are not the correct size or are not driven in straight then they can fall off due to the centrifugal force when the wheels spin. To ensure you get the right size you can go by the bearing numbers of the hubs or measure the hole where the Bearing Buddies sit using dial or digital calipers to get the most accurate measurement. To drive in a Bearing Buddy the manufacturer recommends using a block of wood held against the Bearing Buddy and then driving it in using...
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  • Can Regular Grease Trailer Hubs be Converted to Oil Bath Hubs
  • The choice of oil bath or regular hubs is up to the manufacturer. They are usually found on higher capacity axles, though as you know there are some on lower capacity axles. You can convert some hubs from grease to oil bath using a kit such as # XLPROLUBE1980KIT but for others it would not be possible without changing the hubs. This is because oil bath hubs use an oil cap that threads onto the end of the hub. Most regular hubs are not threaded so you would not be able to screw on an...
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  • Bearing Buddy Availability for Hub Bore of 2.080
  • I wish we had a bearing buddy that would fit the hub you have, but none of the ones we carry will fit a hub with an inside bore of 2.125 (2-1/8 inches). You might try measuring the hub bore again with a digital or dial caliper to see if maybe you have a 2.080 hub bore. If that is the case you could use the # BB2080.
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  • Replacement 2 inch Diameter Bearing Buddy Bra Recommendation
  • Sounds like you are looking for a replacement cap or bra for your Bearing Buddy. If the outer diameter of your current bra is 2 inches you would want the part # BB17B.
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  • How to Pick Out Bearing Buddies for a Trailer Hub
  • 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 digital or dial caliper. I have included a video demonstrating the Bearing Buddy. The Bearing Buddies # BB1980A that you referenced are for...
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  • Replacement Oil Cap for 10,000 Pound AL-KO Oil Bath Axles
  • The hub is going to require the proper threaded cap so you do not want to force one on that has different threads so you have done good so far. Now we just need to determine if there is a cap that will fit. We have oil cap kit # RG04-250 which fits 10K to 12K AL-KO oil bath axles.
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  • How to Pick Out a Bearing Buddy 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 # BB1980A that you referenced are for hubs with a 1.98 inch hub bore.
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