How to Choose the Correct Axle Capacity for Trailer

Updated 01/16/2024 | Published 01/13/2024

Products Featured in This Question

Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs

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Trailer Axle w/ Electric Brakes - Easy Grease - 8 on 6-1/2 Bolt Pattern - 94" Long - 7,000 lbs

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Trailer Axle w/ Electric Brakes - Easy Grease - 6 on 5-1/2 Bolt Pattern - 95" Long - 6,000 lbs

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Question:

What size axles are need for a carrying cargo capacity of 9,000 pounds

asked by: Jeff B

Expert Reply:

The axle capacity needs to be enough to handle the weight of the trailer plus whatever it is carrying. In other words, the axles need to meet or exceed the GVWR or gross vehicle weight rating. Assuming this is some kind of dump trailer with tandem axles I would say it weighs 2,000 lbs or more on its own. Add in the 9k lbs it can carry and you would be looking at 6k axles at a minimum, possibly 7k if the trailer is heavier. You will need to know the exact GVWR to select the right axle.

For example, if you have two of the # e35SR then the axles would be capable of holding 12,000 lbs. If you had two of the # e23SR then the total axle capacity is 14,000 lbs. If you aren't sure what the GVWR is, or what the weight of the trailer is, I recommend checking with the manufacturer. If you're replacing existing axles I would check the axle tags to find the capacity.

expert reply by: Robin H