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Convert your threaded oil-bath hub to grease with stainless steel Bearing Buddies. It maintain light grease pressure inside the hub to protect your bearings, even when submerged, while the zerk fitting makes adding grease quick and easy.
Features:
Specs:
This threaded Bearing Buddy lets you convert an oil-bath hub to grease lubrication while giving you an easy way to monitor and maintain the grease level in your axle hub. Bearing Buddy recommends using grease-proof gasket cement during installation. To add grease, use a grease gun through the zerk fitting. Adding grease moves the spring-loaded piston outward 1/8".
The O-ring inside the barrel of the Bearing Buddy maintains a seal from the outside. The Bearing Buddy maintains slight pressure inside the hub, helping prevent water from entering and contaminating 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 helps prevent 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.
Customer Satisfaction Score:
79% were satisfied with this product
21% of customers were not satisfied
Ratings & Reviews
Fit perfectly, and easy to install, arrived as advertised, staff was very helpful. A product I couldn’t find anywhere else, one shop indicated there was no threaded Bearing Buddies!! I wanted to double check it was correct size and technician verified my measurements
The detailed product info and video helped figure out what I needed
The buddy bearings are exactly what I wanted and needed. I received a set from another supplier that were not as represented and were not correct causing them to have to be returned.
It’s great working with etrailer!
These fit great. I accidentally ordered a size to small the first time. etrailer gladly let me return them easily. I'm very happy with these bearing buddies.
Used these to convert trailer hubs from oil bath to grease. Worked great. I did not know these existed until I found them in the etrailer help section.
The order shipped promptly and delivered on time. The product fit my trailer as expected and I’m able to get back on the water.
I literally called 15 boat and trailer shops in town and could get the parts I needed. I quickly found them on etrailer, had spot on 2 day delivery that I could track on line and had my trailer ready when I needed it. I will use etrailer here on out rather driving and calling every place in town. Parts were exact as well as delivery. Awesome job and thank y’all!!!
The service was terrific. The product was on its way as promised. The Bearing Buddy was easy to install,
and has made maintenance so easy. Would highly recommend buying these from etrailer.com
Did not like the reliable oil bath hubs on my EZ Loader Trailer , went back to old school Threaded Bearing Buddy, etrailer has your parts , will definitely recommend to my friends
My wife informed that the bearing buddy's were received on Monday. I am at sea on a ship in the Pacific and plan to install them when I get home next month.
This effort was based on much online research and with the help of e-trailer I found exactly what I want. I plan on completing this operation and then start with e-trailer on my other boat trailer projects and get it to outstanding condition
the whole experience was very professional. The product is of high quality. I am putting them on my boat trailer which hubs are oil bath and I am switching them to grease. this is why I need them to be threaded.
Product worked as advertised to replace oil bath plastic caps and allow the conversion to regular grease on my ezloader boat trailer.
Got rid of my oil bath hubs. Love them
I switched my oil bath hubs over to grease so I would not have future problems being stuck on the side of the road or at a lake.
If you do make the switch, ALL oil must be removed and make sure you replace the hub seals. Even though my trailer is 7 yrs old, the seal's outer lip were checked.
No problem installing these hubs using a bit of [threadlocker] on the threads.
I ordered the Stainless Bearing Buddys to replace the EZ Loader Oil Bath hub covers. I converted the hub to grease filled instead of the oil. All I had to do was remove the oil seal with a screwdriver and mallet, pack the inner and outer bearings with grease and installed the Bearing Buddys per the instructions. These are threaded and fit perfectly on my tapered spindle. I used Red Gasket Cement on the threads of the Buddys per the instructions.
The first set of bearing buddies were defective. One was a sloppy fit and the other one wouldn't engage the treads. After notified the company , they informed me how to send them back and they were replaced with good ones. I am happy with the new bearing buddies and would recommend this company. These buddies were a great replacement for my boat trailer poorly desiged oil bath lubrication on the axles.
I changed out my oil bath hups to grease. Bearking Buddy is the best solution in my opinion. They work perfectly, threaded in effortlessly and give a visual indication when bearings need more grease. An excellent product at a reasonable pricel; service and shipping were great. Thanks - H.
3rd pair for 3 different sail boats. I’ve never had a bearing failure
Victoria H.
4/14/2025
That's great to hear Arnold! What kind of sail boats do you have? One of my favorite lazy day hobbies is watching sailing vlogs on Youtube.
Went to service my bearings on the trailer for my Key West 203 and found all the grease had become "liquid." Doh!...My mistake. This was my first encounter with oil bath trailer hubs. Not what I was used to. I have two other trailers and I like to keep everything the same. I bought these threaded bearing buddies to convert the hubs/bearings to grease instead of oil bath. Worked like a charm. I have had a couple of long hauls since and had zero issues. I'm not oil bath hubs are a problem. I just wanted to convert to grease and these did the trick.
Product was back ordered about 45 days, but arrived today and screwed perfectly onto my old Reliable hubs. All new bearings and seals to eliminate the leaky and failing oil-filled system. Looking forward to years of trouble free trailering!
Paul
2/11/2025
One year later all is working fine. I check the spring loaded washers frequently, and give it a little lube if necessary. No issues whatsoever, and i’m still glad I converted over from oil fillled.
Jesse M.
2/11/2025
These threaded bearing buddy’s are a perfect fit for my ez loader oil bath hubs.very happy to be done with oil bath hubs because they always had water in them.
All I can say is no issues at the 1 year mark with weekend local boat ramp use.
Everything fits perfectly! Fast shipping! Excellent customer service
Jeff
9/23/2025
These continues to work great!
Fantastic job at great price. Zero worr ies.
Mike L.
2/5/2026
I'm happy to hear you like your Bearing Buddies, Jeff! I've used them myself and found them to be super reliable...I had them for 5 years until I sold my PWC's.
Etrailer took good care of me.
After being unable to get replacement Bearing Buddy's from my local boat dealer, (they claimed they were on order for 3 months) I finally got smart and found etrailer online. Easy ordering process and I had my new Bearing Buddys in less than a week. Great service, great product, I'll be back for all my trailer parts and accessory needs.
Jim K.
8/31/2020
Great product, 1000s of miles with no grease related issues. Just a quick check before leaving home to ensure the pressure is good and off I go. Highly recommend
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Michael
8/20/2023
Still great