Determining the Correct Bearing and Grease Seal Size for Trailer
Updated 07/20/2021 | Published 07/18/2021
Products Featured in This Question
Question:
hi, i bought a used trailer which I think originally came in a box and assembled by the original owner. one of the bearings is noisy. i am not sure how to pick the bearing kit or the seal. the inner and outer bearings are almost the same but apparently have slightly different inner diameter. oreily sold me 2 national 30502 or 30205 but this means inner and outer are the same and they are not. the seal also didnt work. so i ended up returning. please let me know what specs you need to identify the kit.
asked by: Ghennadii F
Expert Reply:
If you have the old bearings and seals, it is possible to find the part numbers stamped into them. If these do not have numbers or if they have worn off over time, you will need to take some measurements.
I recommend using a digital caliper like the # PTW80157 4" Carbon Fiber Digital Caliper to take measurements. If you take the inner and outer diameter measurements you will be able to find the correct replacements.
I have attached a picture showing the measurements as well as a helpful article with a sizing chart for common bearing sizes that you may reference.
(click to enlarge)
Product Page this Question was Asked From
Bearing Kit, 14125A/25580 Bearings, GS-2125DL Seal
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- Bearing Kits
- Bearing 14125A and 25580
- Race 25520 and 14276
- 7000 lbs Axle
- etrailer
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: locations
- Shop: Trailer Hitch
- Shop: Trailer Hub and Drum Assembly - 2K Axles - 7" Diameter - 5 on 4-1/2 - L44649 - Pre-Greased
- Shop: EcoHitch Hidden Trailer Hitch Receiver - Custom Fit - 2"
- Shop: Dexter Electric Trailer Brakes - 7" - Left/Right Hand Assemblies - 2,000 lbs to 2,200 lbs
- Q&A: Replacement Hubs/Bearings for 2000 Kendon Folding Trailer With 1-1/16 Inch Diameter Spindle
- Search Results: grease seals ~ double lip trailer bearings races seals caps
- Shop: Complete Bearing Kit with L44649 Inner/Outer Bearings and 10-9 Grease Seal Fits 1.063" Spindles
- Search Results: axle grease seals
- Shop: Trailer Idler Hub Assembly for 2K Axles - 13" to 15" Wheels - 5 on 4-1/2 - Pre-Greased
- Shop: Dexter Trailer Hub and Drum Assembly for 2,000-lb E-Z Lube Axles - 7" Diameter - 5 on 4-1/2
- Shop: etrailer Electric Trailer Brakes - 7" - Left/Right Hand Assemblies - 2,000 lbs
- Q&A: Will 17" Tires Fit 2000 Kendon Fold Up Motorcycle Trailer
- Q&A: How To Add Brakes To A Kendon Motorcycle Trailer
- Q&A: Replacement Bearing and Seal Kit for 2004 Kendon Motorcycle Trailer
- Q&A: What Info Is Needed to Pick Out 2,200 lb Trailer Axle for 2000 Viking 2107 ST Pop Up Camper
- Q&A: Could Brakes be Added to a Kendon Motorcycle Trailer
- Search Results: bearing buddy trailer bearings races seals caps
- Q&A: Brake Controller Wiring Harness to Install Reese Towpower 8508211 in 2019 Ford Flex
- Search Results: grease
- Search Results: bearing buddy
- Search Results: mr85rr
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2022 Toyota RAV4
- Shop: Trailer Wiring
- Video: Packing Trailer Bearing Demonstration
- Video: The Low-Down on the Mounting Bolts and Hardware for 12" Brake Assemblies
- Video: Comprehensive Review: MB Sturgis Propane Pigtail w/ Back Check
- Article: Most Popular Wheel Bearings
- Video: The Low-Down on the etrailer Rust-Resistant 4-Leaf Double Eye Spring for 5K Trailer Axles
- Video: Checking Out the etrailer Rust-Resistant 5-Leaf Double Eye Spring for 6K Trailer Axles