Recommended Axles for Two Trailer Builds with 14K Capacity & 7K Capacity

Question

Question:

Im going to build two trailers 14000 lb and 7000 lb. what standard is used for trailers? which method of axle position is suitable for my trailers? can steering axle be used in this case?

asked by: Pardis

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Expert Reply:

For your trailers, I recommend not using a steering axle because there are different requirements for them and your trailers don't need them. If you want to pursue the steering axle you will need to check with your local DMV for requirements.

My recommendation is to use a single or tandem axle application for each trailer. If you want to use a single axle for your 7K trailer, I recommend the Timbren Axle-Less Trailer Suspension System - Spindle w/ Brake Flange - Regular Tires - 7K # TASR7KS01. You will need to use two of these for your 14K trailer. I've attached a video to assist as well as a photo for the measurements of proper placement. For tandem axles, you will split the difference on that single axle placement and you will want the spindle center to spindle center measurements to be 33 inches apart.

For the brake assemblies on this axle-less suspension system, I recommend the Electric Trailer Brake Kit - Self-Adjusting - 12" - Left and Right Hand Assemblies - 5.2K to 7K # AKEBRK-7-SA. These are side specific and are labeled for which side. Then for the hub and drum assemblies, I recommend the Trailer Hub and Drum Assembly - 7,000-lb E-Z Lube Axles - 12" Diameter - 8 on 6-1/2 # AKHD-865-7-2-EZ-K for the 7,000 lb system.

If you want to go with tandem axles on your 7K trailer, I recommend the Timbren Axle-Less Trailer Suspension System w Electric Brake Hubs - Straight Spindle - 3,500 lbs # A35RS545E or the trough axles like the Trailer Axle w/ Electric Brakes - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 89" - 3,500 lbs # e43SR. If you go with the through axle option, I recommend the Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear # APT5 and springs like the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/8" Long # e54SR.

expert reply by: Jason S

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Answer 1

I don't recommend upgrading one axle at a time. The capacity differences are substantial, and you will be limited to the weakest component. So the axle, the springs, the equalizer, the brake assemblies, and the hub/drum assemblies would all need…

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Answer 2

If just the spindle is bent, we have the #42 Spindle for 5,200-lb to 7,000-lb Trailer Axles - 2-1/4" Diameter #TRU57FR as a replacement. If you have more than a bent spindle then the other option is to replace your entire axle. Because you…

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Answer 3

Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are…

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Answer 4

If the trailer has 8 lug hubs that would indicate typically that the capacity for each axle is at least 5,200 lbs. Now if you go out and measure the outside diameter of the axle you'll get an even better idea. Typical Axle Diameters Based on Axle…

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Answer 5

For a trailer with 7,000 lb axles I recommend using Load Range G tires, like the Westlake #LHWL410. Load Range G tires are rated for 4,400 lb at 110 psi when using a single tire, and 3,860 lbs at 110 psi when using dual tires. If you are getting new…

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Answer 6

The Dexstar Steel Mini Mod Trailer Wheel #AM20789 is made here in the USA. The Taskmaster Steel Modular Trailer Wheel #TA55VR is made in China. Both of these trailer tire wheels are 16 inch diameter x 6 inches wide and have an 8 on 6-1/2 inch wheel…

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Answer 7

The Dexstar Steel Mini Mod Trailer Wheel #AM20794 you referenced does have zero offset. The Dexstar #AM20794 is a 16x6 wheel with 8 on 6 1/2 bolt spacing and offers a maximum weight capacity of weight capacity of 3960 lbs, and a 110 psi rating when a…

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Answer 8

I went ahead and reached out to my contact at Taskmaster Tires. She confirmed that for the Steel Modular Wheel #TA55VR, load range E, F and G fits if the aspect ratio of the tire is 80 or smaller. For example, the tire size 235/80R16. If the aspect…

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Answer 9

It is easy to tell which type of wheel you have on your boat trailer. Lug centric wheels slide onto studs on the hub and are secured with lug nuts, like a car tire. If a wheel is hub centric, the wheel centers on the hub and bolts are threaded into…

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Answer 10

A slightly larger pilot diameter doesn't matter as long as the wheel is a lug-centric wheel and not a hub-centric wheel. If your wheel are attached with lug nuts then you have a lug-centric wheel. If instead you use wheel bolts then the wheel is…

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Answer 11

Backspacing and offset are terms used to look at the same thing in a different way. Backspacing is described as the distance from the center of the hub to the inside edge of the wheel at the bead seat whereas offset is the distance from the center of…

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Answer 12

If they were talking about the hub face and spring center measurements then what was referred to was the hub-face-to-hub-face and spring-center-to-spring-center lengths. Hub face is measured from the base of one wheel stud to the base of the wheel…

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Recommended Axles for Two Trailer Builds with 14K Capacity & 7K Capacity

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