How to Measure For Replacement Axle

Updated 06/04/2026 | Published 05/31/2026

Question:

I need help finding a replacement axle for my trailer.

asked by: Christopher C

Expert Reply:

I'd be happy to help find the correct replacement axle, but I'll need a few measurements and details first since trailer axles are not identified by the trailer make and model alone.

The most important information is the axle capacity, the hub face measurement, and the spring center measurement. The hub face measurement is taken from the face of one hub where the wheel mounts straight across to the face of the hub on the other side. The spring center measurement is taken from the center of one leaf spring seat to the center of the other.

If you know it, please also provide the axle tag information. The tag is usually attached to the center of the axle tube and may list the manufacturer, serial number, and weight capacity.

It would also help to know the wheel bolt pattern, whether the axle is currently equipped with idler hubs or brakes, whether the springs mount above or below the axle tube, and the outside diameter of the axle tube. If the axle is damaged or the tag is missing, a few photos of the axle and suspension can be very helpful.

Can you send the hub face measurement, spring center measurement, and any information from the axle tag? Those three details are usually enough to get us headed in the right direction.

expert reply by: Heather A