U-Bolt Plate Width For Leaf Spring Mounting on APUBR-1

Question

Question:

I understand the dimensions you have provided but it is missing the dimension for side to side, such as how wide of a spring can fit between the U-Bolts.

asked by: Joe D

0

Expert Reply:

The width dimension of the U-Bolt Kit for Mounting 3500-lb Axles # APUBR-1 is 2-3/8", which is the typical diameter of a 3500-lb axle. These can be used to mount leaf springs 1-3/4" wide to an axle when used with with the included plates and Spring Seat for Typical 3500-lb Round Trailer Axles # TRSS238 .

I've attached a picture for reference on these measurements.

expert reply by: Erik B

0

click to enlarge

Answer 1

When choosing a U-bolt kit for you trailer, you want to choose the correct kit based on the size of your trailer's axle. The width of the leaf springs isn't the main factor. The U-bolt kits you referenced will not both work on the same…

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Answer 2

Merely going with longer shackle links won't provide enough room for the suspension to articulate, you'll want to flip the springs back right side up. The way things are, you have zero articulation in the suspension which isn't safe.…

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Answer 3

I attached a picture that has all of the dimensions available for the Timbren 7k Axle Less System part #TASR7KS01 that you referenced.

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Answer 4

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 5

You can use leaf springs that are rated higher than the axle without any issues as long as they measure the correct measurement for your trailer. For example the 6-leaf double eye spring for 7,000 lb axles part #e64SR measures 24-7/8" eye to…

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Answer 6

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 7

To correctly measure a leaf spring, you'll want to jack the trailer up on jack stands so the axle is hanging freely, then measure directly across from the center of one spring eye to the other, as shown in the provided diagram. The height of the…

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Answer 8

Well shackle length is mainly based on the height difference between the front and rear hangers. The rear hanger normally doesn't hang as low as the front so that the shackle can offset the difference and add the ability to move. What is the…

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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

Yes, going from a 4 leaf to a 6 leaf spring would add slightly to your ride height. For example, if the current 4 leaf spring has 3/8" thick leaves, and you go to a 6 leaf spring with 3/8" thick leaves, you would be adding 3/4" of…

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Answer 11

I contacted MORryde and this does happen from time to time as the weight of the trailer can spread out the axles due to downward pressure on the springs/suspension. Odds are the 35" wheel base #MR27ZR will be the correct one for you, but they…

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Answer 12

The torque requirements for leaf spring u-bolts depend on the diameter of the u-bolts that are being used. If the gross weight of your tandem axle trailer is 7,000 lbs, then you likely have two 3,500 lb axles. Typically 1/2 inch diameter u-bolts are…

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U-Bolt Plate Width For Leaf Spring Mounting on APUBR-1

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