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What Size of Spindle is Needed for a 3,500-Lb Axle


I can not find any numbers on the bearings. I have a 3500 lbs axle on a car hauler that has a bad spindle. the hub has a number which is 8-256. Front bearing measures 1.059 id. Back bearing is 1.371 id. Lip seal is 1.795 id.What size of spindle is it?


Expert Reply:

I have three spindles that are for a 3,500-lb axle and have the bearing dimensions you have listed. The only difference is the dimension for the grease seal is 1.75 inches, not the 1.795 inches that you have mentioned. Maybe you typed in the seal diameter wrong. The hub number you have mentioned is just a casting number, not a part number.

The three spindles I have for a 3,500-lb axle are as follows.

#84 Spindle - 1-3/4" Diameter (8-1/4" OAL) # TRU64FR
#84 E-Z Lube Spindle w/ Brake Flange - 1-3/4" Diameter (9" OAL) # TRU74FR
#84 Spindle - 1-3/4" Diameter (11-1/4" OAL) # TRU84FR

The bearing and seal kit for the above spindles is the TruRyde Bearing Kit, part # BK2-100. This kit includes bearings,races, grease seal, cotter pin and washer.

I am including a link to a page on trailer spindles. This page will list the spindles and the dimensions of each spindle.

expert reply by:
Jeff D

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