Can Round U-Bolts Be Used On a Square Axle Tube?

Question

Question:

Is it safe to use round U-bolts on a square trailer axle?

asked by: Shawn A

0

Expert Reply:

You need to use square U-Bolts with having a square axle tube. Trying to use round U-Bolts you risk damaging both the bolts and the axle as it creates pressure points rather than distributing the load across the surface. We have a few different size bolts you can see in the list below.

1-1/2" U-Bolts # SP01-120
1-3/4" U-Bolt # 175130
2" U-Bolts # SP01-160

expert reply by: Bud M

0

Answer 1

The only real difference between your current 3-leaf springs and the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 27" Long #SP-210275 will be the thickness of the leaf spring stack. This will be 3/8" thicker when compared…

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Answer 2

Front and rear suspension hangers are not often the same height like this but they can be. If you have the hanger spacing right then what will happen is the center of the spring will be offset a little between the two hangers to compensate some for…

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Answer 3

Correct, you will need to have a spring set installed on the axle tube to hold the leaf springs in place and prevent them from sliding back and forth. That said, although we do not have any spring seats specifically for a square tube axle you can…

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Answer 4

Square axles normally don't have spring seats like a round axle but do have a hole for the leaf spring bolt to fit into. Take a look at the CE SMITH #CE33201GA-HUB for a visual. The U-bolt mounting kits will have a hole in the center for the…

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Answer 5

I really like the Westlake radial trailer tires as our customers really like them, they are well-constructed and they have higher speed ratings of 75 mph compared to most trailer tires that are only rated for 65. In your tire size of 205/75-14 I…

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

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 8

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 9

For a single axle trailer, you want the shackle strap to be able to move so that you have the spring deflection needed for your suspension. Angled like the photo or even almost vertical is fine you just don't want the shackle strap to bind and…

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Answer 10

Hey Jaime, yes you can replace your 25-1/4 inch 3,500 lb axle leaf springs with a 5k rated axle spring like the part #e44SR. This will increase the suspension's weight capacity and might make the ride quality a little rougher but it would fit and…

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Answer 11

Thank you for purchasing from etrailer! You did a great job selecting compatible parts. When using Leaf Springs #e64SR with the #AP233 Equalizer Kit and the #H248 Hanger Kit, there should be 29-1/2" between the front and center hangers and…

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Answer 12

Hey Philip so while we don't carry the exact spring you are looking for it does match the specs of the #e59SR so this would be a great solution. It's correct length at 23-1/8 inches and is for a 3,500 lb trailer axle like you have as well.

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Can Round U-Bolts Be Used On a Square Axle Tube?

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