How to Find Which Replacement Axle, Slipper Springs and Hubs are Needed for Small Boat Trailer

Question:

Hi, I have a small boat trailer with a pretty rusted axel and leaf springs. I was wondering if there was a package that had everything ready to go or not? Also I am not very familiar with this subject, So where would I measure from? And is somthing that I could do myselfe? Thank you for your time.

asked by: Conrad

Expert Reply:

We do indeed offer some off the shelf replacement trailer axles in common lengths.

In order to see if what we carry would work for your needs, I'll need some information from you.

I'll need to know:

Axle capacity- there might be a tag somewhere on the axle or the trailer that lists this. If not, we can make an educated guess based on the wheel bolt pattern and the reference numbers from the inner and outer wheel bearings. If the reference numbers aren't readable, you can use a digital caliper to get the spindle diameter where the bearings ride, which will help me identify which bearings are used. The bearing numbers and wheel bolt pattern will also help identity which replacement idler hubs you'll need.

I'll also need the spring center to spring center dimension and the hub face to hub face distance. I'll provide a diagram showing exactly what measurements are needed.

From the photo you provided, I can see you have slipper springs. I'll need to know the length of the springs. The best way to get an accurate measurement is to jack the trailer up so that the axle hangs free.

If you can get back with me with that information, I'd be happy to help. Simply reply to this email.

expert reply by: Mike L