Looking for the Replacement Bearings for a Hadco Motorcycle Trailer

Updated 06/09/2026 | Published 06/01/2026

Question:

I have an older Hadco motorcycle trailer, single axel, with 6 lug nut wheels. I wish to replace the wheel bearings, but do not know the age or tonnage. Hub has Hadco 3149 stamped on it. Are you able to match me up with replacement wheel bearing kits? Thank you.

asked by: David S

Expert Reply:

Thanks for reaching out David!

I'd be happy to help identify the correct bearing kit for your Hadco motorcycle trailer.

Unfortunately, the "Hadco 3149" number stamped on the hub doesn't cross reference to bearing information, so I can't reliably identify the bearings based on that number alone. Since many older trailers used hubs and axles from different manufacturers, the best way to determine the correct replacement parts is by identifying the bearings themselves.

If you're able to remove one hub, please reply back with either:

The bearing numbers stamped into the inner and outer bearings, or
A few photos of the bearings and spindle, along with spindle measurements taken with a caliper (to the nearest 0.001")

If you can also provide the grease seal number or the seal's inner diameter, that will help ensure we get the correct kit the first time.

Once I have that information, I'll be happy to help you find the right bearing kit.

I look forward to hearing back from you!

expert reply by: James D

David S.

6/8/2026

Hello James and thank you for your informative response. I viewed the e-trailer videos and felt confident enough to remove the hub and bearings. You are correct, as I have been able to identify the bearing #'s and have ordered them. Many thanks for your advice and informative website. David

James D.

6/9/2026

@DavidS Love to hear this! Glad this response helped and if you have any additional questions, don't hesitate to reach out. We appreciate you choosing etrailer

David S.

6/9/2026

@JamesD Thanks for your help James as trailer parts can tricky. Have a great day, David