Replacement Trailer Spindles to Allow Installation of Different Hubs


I have an older small trailer no brakes with 2 round idle axles about 2.5inch in diameter and on the end is a 4 bolt hole flat square flange with holes 2.5inch center to center and no hole in the center of the plate welded to the end of the axle. The spindle is welded to a matching square plate with 2.5inch center to center and the flat spindle plate bolts directly on the flat axle plate. The spindle does not go through the square plate. The spindle is a taper 1.25inch inner and .75inch outer shaft size. It uses a 11949 outer bearing and a 67048 inner bearing. The current hub overall length is 3.5inch and the only hub I can find is 4 - 1/8inch overall length. I would like to repace the spindle to use a standard hub if possible. Do you sell spindles that have a 4 bolt flat plate that bolts directly onto a flat plate on an axle?


Expert Reply:

All of the trailer spindles we sell are weld-on types, including those with brake flanges like Redline # R20384EZ that fits 1.75-inch diameter axles. The largest diameter spindle we sell is for a 2-1/4-inch axle beam, part # R50342EZ; this can be seen on the link provided. This spindle is for a 5200-lb axle and it has a 5-bolt brake mounting flange.

It is almost surely going to be easier and less expensive for you to replace your axles than to have a professional welder install new spindles and find compatible new hubs. New hubs MUST use the same bearings as your existing ones in order for them to fit your spindles.

The link provided for you will let you see all axle assemblies that include idler hubs. These are offered in various weight ratings. For example, in a 3500-lb-rated axle kit we have Dexter # 35545I-EZ-89 that includes 5-on-4-1/2 hubs, bearings, races, seals, grease caps, wheel studs, lug nuts, and marine-grade wheel bearing grease. This kit uses inner bearing # L68149 and outer bearing number # L44649. You need to match your axle capacity, length and spring seat measurement.

We do offer 4-bolt hubs that use the same bearings you referenced - part # AH15450ECOMP from Dexter - which is a 4-on-5-inch agricultural hub for 3000-lb axles.

expert reply by:
Adam R

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