Determining the Correct Bearing and Grease Seal Size for Trailer
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.
Products Referenced in This Question
4" Carbon Fiber Digital Caliper
- Hand Tools
- Measuring and Layout Tools
- Digital Calipers
- Carbon Fiber
- Performance Tool
more information >
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 >
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