Confirming Correct Leaf Spring Size Measurements

Question

Question:

This is the right style of spring I need. But with a tape measure from the center bolt hole to center bolt hole I measure 26 inches. Is this the correct spring to use?

asked by: Charlie B

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Expert Reply:

It sounds like you already have done the correct center of one eye to the center of the other eye measurement. If your measurement is slightly off, sometimes the leaf spring may still work as leaf springs do expand by as much as 3/4-inch over time. Since you measured 26" and the 4-Leaf Slipper Spring w/ Open Eye End for 4,300-lb Trailer Axles # e33SR is already 26-1/4" long, you will want a shorter option though I don't see we have that in an open eye end style of spring.

expert reply by: Patrick R

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Answer 1

As they wear, leaf springs tend to flatten out. The first step is to get the correct length of the existing springs. In order to do that, you'll need to put the trailer up on jack stands and measure them (center eye to center of the slipper) with…

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Answer 2

The 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 26" Long #e48SR is a good replacement for your boat trailer as it meets all of the specs and is compatible with an axle that's just a little higher when it comes to weight rating.…

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Answer 3

It sounds like the 4-Leaf Slipper Spring w/ Open Eye End #e33SR could be what you are looking for. Over time leaf springs can stretch so this one being 1/4" shorter than your current leaf spring is most likely correct. This leaf spring is rated…

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Answer 4

The bushings of the 4-Leaf Spring part #e33SR have a 9/16 hole diameter. If you are looking for a replacement bushing you would want the part #TRBU11561. This bushing has a 9/16 inner diameter and an outer diameter of 1.02 inches.

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Answer 5

We do have a selection of slipper springs that are 1-3/4" wide which I have linked for you to check out. The one that is closest to the size that you mentioned is the 4-Leaf Slipper Spring #e33SR which is rated for 4,300 lb trailer axles. It…

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Answer 6

I can help you determine how to figure out the right replacement slipper springs, though I'm not 100% certain what you mean by "where can I find how much space or clearance is required." I think you are asking if there is a standard…

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Answer 7

For a single axle slipper spring hanger kit to be used with the slipper spring part #e33SR you'd want to use the part #APS3SE.

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Answer 8

Thanks for the picture! I have something close to your 26" slipper springs. It is possible to switch to a two eye leaf spring or even go down to a four leaf spring with a higher capacity. If you wanted to switch it up to a two eye leaf spring I…

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Answer 9

The Slipper Spring #e33SR referenced in your question is indeed the closest option we have available for a slipper spring that matches the dimensions on your trailer. Slipper springs come in 1-3/4 inch, 2 inch, 2-1/2 inch, and 3 inch widths, so you…

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Answer 10

With slipper springs you will want the eyes of the spring facing the front of the trailer and the open end facing the back. I attached a help article on slipper springs for you to check out as well.

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Answer 11

I have a replacement option for you, but the only slipper spring we offer that is 1-3/4" wide and is 26-1/4" long is the 4-Leaf Slipper Spring w/ Open Eye End for 4,300-lb Trailer Axles - 26-1/4" Long #e33SR. Since you mentioned that…

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Answer 12

The only open eye 1-3/4" wide leaf springs we currently carry is the etrailer #e24SR & #e33SR. I have no way to verify the weight capacity for your current springs but as it is only a 2" square axle this spring is likely much heavier…

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Confirming Correct Leaf Spring Size Measurements

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