1. Trailer Bearings Races Seals Caps
  2. Bearing Buddy
  3. Caps
  4. Bearing Protector Grease Cap
  5. 1.938 Inch
Bearing Buddy Bearing Protectors - Model 1938 - Chrome Plated (Pair)

Bearing Buddy Bearing Protectors - Model 1938 - Chrome Plated (Pair)

Item # BB1938
lowest price pledge
Our Price: $32.12
Trailer Bearings Races Seals Caps
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.95 lbs
Quantity: 
In Stock
BB1938 - Bearing Protector Grease Cap Bearing Buddy Caps
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Provide your trailer wheel bearings with premium protection - replace your existing grease caps with Bearing Buddies. They install in seconds and provide an easy, safe way to monitor and control the level of grease in your axle hub. Lowest Prices for the best trailer bearings races seals caps from Bearing Buddy. Bearing Buddy Bearing Protectors - Model 1938 - Chrome Plated (Pair) part number BB1938 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (37)
  • Q & A (19)
  • Photos
  • Why etrailer?

Bearing Buddy Trailer Bearings Races Seals Caps - BB1938

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

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


Features:

  • Replaces the grease cap in the axle hub
  • Prevents wheel-bearing failure
    • Keeps water and dirt out of hubs and bearings
    • Allows boat trailer wheels to be completely submerged
    • Stops corrosion and pitting on bearings
  • Provides easily accessible grease fitting
    • Makes adding grease to the bearings quick and simple
  • Maintains slight, controlled pressure (3 psi) with spring-loaded piston, preventing water from entering hub
  • Prevents overfilling and rear seal damage with automatic pressure-relief feature
    • Grease seeps around piston edges and into barrel when full
  • Constructed of stainless steel internal parts and triple-chrome-plated steel barrel
    • Ensures longer-lasting fit than plastic or aluminum products
  • Includes rubber covers
  • Installs easily
  • Made in the USA


Specs:

  • Fits 1.938" hub bore
    • Works with outer bearing model 09067
    • Works with outer bearing cup (race) models 09194, 09195 and 09196
  • Lifetime warranty


Bearing Buddy installed diagram

Bearing Buddy Operation

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

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

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

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



42300 Bearing Buddy Model 1938 - Chrome Plated (Pair)






Customer Reviews

Bearing Buddy Bearing Protectors - Model 1938 - Chrome Plated (Pair) - BB1938

Average Customer Rating:  4.8 out of 5 stars   (37 Customer Reviews)

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

- BB1938
by:

I got the items in good shape but they were to small. I don't know what I need but would like to return them. 828310



- BB1938
by:

did a great job of helping me find several things to order But failed to send me a list of what I ordered as promised when I placed the order with him. That is why I am going to do business with AMY ;;;;;;;;;; 784381



- BB1938
by:

Product arrived very fast.Items are top quality.Will shop here again 776519



- BB1938
by:

Perfect, fast delivery 714272



- BB1938
by:

I refurbished an old home built boat trailer and was fortunate enough to find Bearing Buddies that fit my hubs. I have only towed my trailer one time but I know how well Bearing Buddies work and I am extremely confident they will hold up longer than the trailer will. 698185



- BB1938
by:

Simply fantastic service. Adjusted my order on the fly and made sure it got to me on time, for a hassle free long-distance trip. Thank you Carol! As for the product -- I went with 1980 SS in the end. Easy to install, load with grease. My trailer's wheels were blissfully silent across an 800 mile round trip. (Now to return the ones I didn't need...) 692552



- BB1938
by:

Prices are great and product is exactly as advertised. Great place to shop. 682710



- BB1938
by:

The bearing buddys have worked flawlessly. It was nice to get the size I needed because my hubs were from an older trailer. Thanks. 667043



- BB1938
by:

Very reasonable prices and shipping rat es. 604538



- BB1938
by:

It was easy to replace old caps with Bearing Buddys and etrailer was there to help me get the right size, my trailer had odd size caps. Its a peace of mind one or two pumps of grease and your on your way, outstanding product. 574328



- BB1938
by:

shipped same day, and great price! 512149



- BB1938
by:

Lori. Looks like the dust covers are too small, but I need to get my trailer back from my brothers shed to be sure. Will let you know Monday around noon or so. Thanks for the follow up. It is greatly appreciated. Dave 489110



- BB1938
by:

So far OK thanks 430929



- BB1938
by:

Excellent prices and service and large selection of parts availible. 414350



- BB1938
by:

Exactly what I ordered. Perfect fit on my utility trailer. Had heard about Bearing Buddies before, and always wanted to try them. So far, so good. Will update review after a few months use. 394885



- BB1938
by:

Good product for minimizing bearing risks and delivered ahead of estimated schedule! 394155



- BB1938
by:

This product came fast and was packaged well. 376279



- BB1938
by:

Couldn't find a plain old bearing cap anywhere - odd size- so I got a bearing buddy. Wheel looks good and I can pretty much forget ever having to pack bearings again. 361603



- BB1938
by:

Used these before and love them.. 360716



- BB1938
by:

Fast delivery, products ordered of great quality, work great for my application. 321148



- BB1938
by:

great products fast shipping everything I need for my trailers, thanks Demetrios 312682



- BB1938
by:

etrailer.com is competative on prices and quick to deliver an order. I am very satisfied. 309149



- BB1938
by:

As described worked great. 251132



- BB1938
by:

Fit like it should. Thank you very muc h. 238338



- BB1938
by:

I have a homemade trailer for a jet ski. The hubs and spindles are not common. But Bearing Buddy makes it easy to identify the exact part needed based on the outer bearing race/cone. They arrived super fast and they fit perfectly. I installed them in under 10 minutes. My old homemade trailer will now last longer than the jet ski. Bearing Buddy's are a must have item for any boat trailer. 229713


25
37
Show More Reviews

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

  • Which Bearing Buddy Do I Need
    The Bearing Buddy Bearing Protector # BB1938 is designed to fit on a 1.938" hub bore and with outer bearing model 09067. In order to choose the correct grease cap or bearing protector, I strongly recommend using a precise measuring tool such as a dial caliper. Hubs can have bores that differ by only a few thousandths of an inch, so getting an exact measurement will help us choose the correct cap for you. There isn't really a "typical" setup for a trailer since the components vary depending...
    view full answer...
  • Correct Buddy Bearing Protectors for 1-15/16 Inch Hub Bore
    The correct set of Bearing Buddy Bearing Protectors for a 1-15/16" hub bore is part # BB1938 for chrome or part # BB1938SS for stainless steel.
    view full answer...
  • Rubber Covers for Model 1980 Bearing Buddy
    Yes, the # BB19B would work with your 1980 model of Bearing Buddy protectors. These covers will keep grease where it belongs, and off the tires and wheels of your trailer. These are sold in packages of 2, so please order accordingly for how many axles your trailer has. I have included a link to the part listed above for your reference.
    view full answer...
  • Bearing Buddy for 1.938 Hub Bore
    We offer them. Your hub probably uses a 09067 outer bearing with a 1.938 hub bore. If that's the case, we offer a Bearing Buddy model that will fit. For a chrome plated model, use # BB1938 or for a stainless finish, use # BB1938SS
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • Bearing Buddy for Hub with 1.928 Hub Bore & 09074 Outer Bearing
    The best option for you would be Bearing Buddy # BB1938. Your hub bore is 1.928 and this Bearing Buddy is for 1.938 hub bores. It will be a little snug, but that is not a bad thing when it comes to bearing protectors. This same Bearing Buddy is offered in a stainless steel version # BB1938SS.
    view full answer...
  • Bearing Buddy for a SnowBear Trailer with 1-15/16 inch Hub
    15/16 is .937 inches so your measurement comes out to 1.937 inches which is slightly smaller than the 1.938 inch diameter of the Bearing Buddy Model # BB1938. I believe this will be the correct part for your hub since there is not another bearing protector close to the dimension you have mentioned. You should measure more precisely to determine the correct size to order. If you have access to a dial caliper it would help. I contacted SnowBear and they have not gotten back to me so I...
    view full answer...
  • Will Bearing Buddy BB1938 Fit Spindle Nut that Sticks Out 1-1/8 inch
    Your spindle nut extending beyond the hub about 1-1/8 inch is pretty normal. The depth of the Bearing Buddy part # BB1938 easily accommodate that and based on your other dimensions would fit in that regard as well.
    view full answer...
  • Which Bearing Buddy Is Compatible With a 1999 Coleman Sea Pine Trailer?
    For your 1999 Coleman Sea Pine, the Bearing Buddy caps you will want are the Bearing Buddy Bearing Protectors - Model 1980A-SS w/ Auto Check - Stainless Steel (Pair) # BB1980A-SS. These will be driven into place on your 7 inch hubs. I confirmed the fit with the numbers you gave for your hub.
    view full answer...
  • How Much Grease to Put In Bearing Buddy Bearing Protectors
    I'm not sure exactly how much grease you will need to add to the hub when via Bearing Buddy Bearing Protectors like # BB1938, but the automatic pressure-relief feature on the cap makes this process pretty easy. You essentially will add grease using a grease gun like # ALL940798 until you start to see grease seep out of the seal around the piston. The above mentioned Bearing Buddies are designed to fit a 1.938" hub bore. This is the closest option available to the 1.9" size you mentioned....
    view full answer...
  • Recommended Grease Cap for Hubs With 1.931 Inch Diameter
    The Bearing Buddy Bearing Protectors - Model 1938 - Chrome Plated (Pair) # BB1938 or # BB1938SS in stainless steel are the closest fit to your hub bore with a diameter of 1.938 inches. These are drive in bearing protectors that will keep the concrete dust out and keep your system well maintained. They are drive in caps that are within 7/1000ths of an inch so they should work seeing as even a digital caliper can have that slim margin of error.
    view full answer...
  • Do You have Grease Caps for a 1.935 Bore Diameter Hub
    If there is any corrosion built up on the hub, it could be built up corrosion built up on the hub bore making the hole read smaller. Grease caps do not have to be very deep. They only have to go in far enough to fit snug and tight inside the hub bore. Many grease caps have a flange length of just a little over a 1/4 inch, and most are well under a 1/2 inch. If their is a bit of corrosion, try lightly scrubbing with some steel wool. After cleaning it up, a 1.943 cap like part # F001524...
    view full answer...
  • How to Measure for the Correct Grease Cap or Bearing Protector for a Boat Trailer
    It sounds like you need a grease cap or bearing protectors. The Bearing Buddy Bra, # BB19B, that you referenced covers the Bearing Buddy Bearing Protectors, like part # BB1980A. In order to choose the correct grease cap or bearing protector, I strongly recommend using a precise measuring tool such as a dial caliper. Hubs can have bores that differ by only a few thousandths of an inch, so getting an exact measurement will help us choose the correct cap for you. Check out the photo I...
    view full answer...
  • Which Bearing Buddy Do I Need on My Utility Trailer
    Since the 1.98 inch is just slightly too large then more than likely the 1.968 inch # BB1968 is going to be your fit. To find out for sure which Bearing Buddy you need you can check your bearings. If your outer bearing is M12649 or 07100 then you need the 1.968 inch. If you have outer bearing models L44643, L44649 or L44640 then you will need a 1.98 inch Bearing Buddy # BB1980A. Or if your outer bearing is model 09067 then you need the 1.938 inch # BB1938.
    view full answer...
  • Bearing Buddy Recommendation for Dust Cap that Measures 1-15/16 Inch
    1-15/16 inches in decimal form is 1.9375 inches which means for a Bearing Buddy you would want the # BB1938SS for stainless steel or part # BB1938 for chrome.
    view full answer...
  • Recommended Bearing Buddy Grease Caps for 1-15/16 Inch Diameter Trailer Hub
    If your hub measures 1.9375 inches like you referenced then # BB1938 in chrome or # BB1938SS in stainless steel will fit. These are often paired with the Spindle Grease Seal Set for 15123 Inner Bearing and 1.980T or 1.938 Bearing Buddy # BB60009 to give you a strong grease seal.
    view full answer...
  • What Size Bearing Buddy Is Needed For A Hub Bore Size Of 1.940 Inches On A 1951 Utility Trailer
    I have a Bearing Buddy Bearing Protector, # BB1938, which fits a 1.938 inch hub bore. This would be the closet to your measurement of 1.940 inches and should work in your hub. The next closest size I would have is the Bearing Buddy Bearing Protector, # BB1968, it fits a 1.968 inch hub bore. The Bearing Buddy Bearing Protector, # BB2047, you have referenced fits a 2.047 hub bore, which would be too big for your trailer.
    view full answer...
  • What is the Correct Bearing Buddy for Use on 2005 Airstream Classic
    You can determine what type and size of Bearing Buddy to use on your Airstream trailer by taking a look at the current hubs. You will need to know if the hub bore is threaded or not and you'll also need to take a precise measurement of the hub bore diameter using a dial or digital caliper. You'll need to measure to the nearest thousandth of an inch, or three decimal places like 1.781-inches. Once you know your type and size of hub bore you can use the linked page to select those features...
    view full answer...

Do you have a question about this Trailer Bearings Races Seals Cap?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer bearings races seals caps for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer bearings races seals cap information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Mike L
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Rachael H
Written by:
Tyler C
Installed by:
Jeff D
Video Edited:
Chris R

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.