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 1938SS - Stainless Steel (Pair)

Bearing Buddy Bearing Protectors - Model 1938SS - Stainless Steel (Pair)

Item # BB1938SS
lowest price pledge
Our Price: $37.71
You Save: 28%
Trailer Bearings Races Seals Caps
Orders above $99 qualify for Free Shipping
Shipping Weight: 1.2 lbs
In Stock
BB1938SS - 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

Great for marine applications; the stainless steel construction provides the best in corrosion resistance. The design makes Bearing Buddy an easy way to protect your bearings by keeping water out and ensuring enough grease is in the hub. Lowest Prices for the best trailer bearings races seals caps from Bearing Buddy. Bearing Buddy Bearing Protectors - Model 1938SS - Stainless Steel (Pair) part number BB1938SS can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (16)
  • Q & A (9)
  • Photos
  • Why etrailer?

Bearing Buddy Trailer Bearings Races Seals Caps - BB1938SS

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

Great for marine applications; the stainless steel construction provides the best in corrosion resistance. The design makes Bearing Buddy an easy way to protect your bearings by keeping water out and ensuring enough grease is in the hub.


  • 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
    • Ensures longer-lasting fit than plastic or aluminum products
  • Includes rubber covers
  • Installs easily
  • Made in the USA


  • 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.

42308 Bearing Buddy Model 1938SS - Stainless Steel (Pair)

Customer Reviews

Bearing Buddy Bearing Protectors - Model 1938SS - Stainless Steel (Pair) - BB1938SS

Average Customer Rating:  4.9 out of 5 stars   (16 Customer Reviews)

Great for marine applications; the stainless steel construction provides the best in corrosion resistance. The design makes Bearing Buddy an easy way to protect your bearings by keeping water out and ensuring enough grease is in the hub.

- BB1938SS

Put bearing buddies on my boat trailer last year greased them up and basically you never have to worry about your wheel bearings. Checked them in the spring this year put 1 shot of grease in each side and trailer's good to go fishing for the season. 844391

- BB1938SS

Bearing Buddies are a great addition to your trailer for easy axle maintenance 717774

- BB1938SS

Fit just like they should have. No issues and great quality! 629446

Still no issues!
Dan - 04/18/2020


- BB1938SS

Great product for boat trailer. Have had them on all my trailers. 614366

- BB1938SS

super fast shipping great product web site is super easy to use. thank you e-trailer. 554133

- BB1938SS

Ordered the wrong Bearing Buddies the first time the return process was quick and painless. My re-order arrived quickly and of course fit perfectly. These will make maintaining my trailer simple and quick, I'll never have a trailer without them. 417367

Perfectly as expected.
MB - 08/07/2018


- BB1938SS

Great customer service in returning the wrong size that my trailer company recommended. Thanks to Chris W. for making this so easy. Have now received the new size in no time at all. 316543

- BB1938SS

I have packed my wheel bearings on my trailer for the last time. Ordered a set of Bearing Buddies from etrailer.com and it took maybe 10 minutes to install them. Very high quality and will probably outlast my trailer. If you own a trailer and do not have Bearing Buddies on it.....Why not? 309154

After a year the bearing buddies are working just as good as the day that I installed them. What used to be a half day job packing the wheel bearings are a half minute job.
Marty M - 10/21/2017


- BB1938SS

They were very helpful and delivered the bearing buddies quickly. I am using them on a sprayer to cut down on maintenance and repairs. 192466

- BB1938SS

The best service I have had in such a long time. Shipping was excellent , unbelievable FREE or 7.95 for 3 days- what a great deal!! Very happy , satisfied with eTrailer, I placed another order for rims. Getting return # was a sinch, very helpful, awzum personality peoples !!! Thanx for everything BTW, Bearing Buddy fit perfect, super quality. I could not find these anywhere else but eTrailer.com 146240

- BB1938SS

Fast shipping great customer sevice 94709

- BB1938SS

Used these for years there great. First time ordering from etrailer they were EXCELLENT to deal with great price and quick shipping. Thanks 31518

- BB1938SS

One of the best internet ordering experiences I have ever had!!!!!!!!!! I use the Bearing Buddies on a 1950's Model WH60, Serial #2 John Deere disc harrow. Your follow-up and completing my order in such a timely manner is greatly appreciated. I was back to plowing this morning. Thank you, George 30005

- BB1938SS

Fast delivery and very responsive! 28296

- BB1938SS

I know the Bearing Buddy works great and just needed a replacement. etrailer has an easy to navigate site and more trailer parts than one could imagine. Their prices are great too!The customer service received at etrailer.com was STUPENDOUS! I ordered the two new Buddies and within 10 minutes George J. with erailer emailed me and said the parts were in stock and would ship. An hour later I received another e-mail. This one was from Nancy W. She said the order was complete and had shipped. The e-mail provided a tracking number too. I chose the cheapest ship (4.99) and although I live in Washington state the package was received in 2 days. Everything was perfect! I cannot overstate how great etrailer's customer service/communication was. I have never been a recipient of such great service on-line, no joke! Go with etrailer!!!! 16671

- BB1938SS

Great to do business with Product was a hard to find item. A call to etrailer verified that it was exactly what I needed. Will buy from again. Thanks, 5036


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

  • 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:

Written by:
Tyler C
Installed by:
Jeff D
Expert Research:
Jameson C
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.