Solution for Replacement Trailer Hub With 3578 Inner and 2788 Outer Bearing

Updated 04/28/2024 | Published 04/26/2024

Products Featured in This Question

Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2

(91)

$65.61

Timbren Axle-Less Trailer Suspension w/ Idler Hubs - Standard Duty - No Drop - 5 on 4-1/2 - 2K

(108)

$750.30

Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 72" Long - 2,000 lbs

(399)

$263.71

Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 72" Long - 2,000 lbs

(399)

$241.77

Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs

(399)

$219.19

Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs

(399)

$219.66

Question:

I am in need of some help with a trailer hub. The inner bearing is a 3578, the outer is a 2788, and the wheel seal is a 55093. It can be either 5 or 6 lug. It is replacing an old spoke style hub to an updated hub on a 2k axle. Thanks

asked by: Josh A

Expert Reply:

The bearing combination on your trailer is obsolete so there are no hubs that will fit. The best solution would be to replace the axle that has a spindle with a modern bearing combination. You will need to measure the hub face distance (length) to find a replacement. We have the following available:

-Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs # e82GR for 13" to 15" wheels

-Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs # e84YR for 8" to 12" wheels

-Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 72" Long - 2,000 lbs # e37YR for 13" to 15" wheels

-Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 72" Long - 2,000 lbs # e32GR for 8" to 12" wheels

If you are unable to find a replacement that is the right size the only other option is a universal fit like the Timbren Axle-Less Trailer Suspension # A20RS545.