Replacement Trailer Hub for BT-100 F10 Hub

Updated 06/05/2024 | Published 05/31/2024

Question:

I have a BT-100 F10 hub assembly, 4 on 4, that came off a circa 1981 Calkins boat/catamaran trailer, light duty. Id like to replace the bearings, races and seal, or obtain a complete pre-greased hub assembly, like the C.E Smith 13109 Bearings/races inside and out: 44649/44610. Grease seal: 34823inch ID 1-1/4 1-1/16inch spindle, total length approximately 4-13/16, which includes: 1inch length of thread, 3-5/16inch length of 1-1/16inch diameter straight for hub assembly, 1/2inch length of 1-1/4inch diameter at weld to axle. In the middle of the axle, between the races, theres pitting on top of spindle. Not sure, but I dont think the pitting will be a problem. The trailer does not get used in the water nowadays. The races are centered in the hub assembly, separated, back-to-back, by a distance of approximately 2-5/16. The races are not seated against the step up to the inner cast surface. There is a 4/16inch gap between the two. If I replaced the races, Im not sure I could position them properly. Ive included a few photos. Do you think the CE Smith 13109 would fit my spindle. Thanks, Matt

asked by: Matt

Trailer Spindle
(click to enlarge)

Expert Reply:

Hey Matt, thanks for all of the info on your current hub, based on that the correct replacement would be the CE Smith part # CE13109 which is pre-greased and ready to install. Your spindle looks fine too.

expert reply by: Jameson C