How to Pick Out Hubs for a Boat Trailer  

If you give me the tapered spindle measurements like in the attached photo, I can help you get the replacement hubs you need. I need the measurements at letter B where the seal sits, letter C where the inner bearing rides, and letter D where the…

The spindle dimensions are as follows: A is the mounting dimension, B is the seal dimension, C is the inner bearing surface, D is the outer bearing surface and E is the diameter of the threaded portion of the spindle for spindle nut selection. Say…

If you remove the hub and wipe away the grease on the spindle you can check to see if it is damaged. Look for an scarring, gouges, discoloration, or scoring on the spindle. If the spindle is damaged then the bearings won't ride properly and can…

You will need to measure the diameter of the spindles where the seal and bearings ride. Check out the picture I attached that shows where this is. You will need an exact measurement so either a digital or dial caliper will be needed. To pick out the…

For mounting a 15" wheel on the CE Smith Trailer Idler Hub Assembly #CE13515 you will want to torque the wheel nuts to either 90-120ft-lbs on a steel wheel or 90-100ft-lbs on an aluminum wheel. I have included our a wheel torque chart below as…

I recommend using the CE Smith Trailer Idler Hub Assembly #CE13515 for your Calkins boat trailer. These have the 5 on 4-1/2" bolt pattern and is prepacked and greased for your spindle. You can add the Bearing Buddy Bearing Protectors #BB1980A-SS…

Based on your bearing dimensions you do have a 3,500 lb axle. The CE Smith Trailer Idler Hub Assembly w/ Case for 3.5K Axles - 5 on 4-1/2 - Galvanized - Pre-Greased #CE13515 that you referenced would be a really great option as it has the correct…

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…