Upgrading the Axle on 4x8 Trailer

Question

Question:

the description states up to 12" wheels, but I have already upgraded to 4 bolt 13" wheels I bought from you. The other axle you may or may not have the 20440I-ST-60 states it will accommodate the 13" wheels, but is capped at 2000# instead of 2200#. So, I am a little confused here. I need to keep the 13" wheels.

asked by: John L

0

Expert Reply:

In order to find the correct axle, you will need to know the dimensions from hub face to hub face and spring center to spring center, like in the photo I've added. I've also attached a link to our page with each of our available axles so you can find the correct fit.

expert reply by: Kyle S

0

click to enlarge

John

12/1/2017

the description states up to 12" wheels, but I have already upgraded to 4 bolt 13" wheels I bought from you. The other axle you may or may not have the 20440I-ST-60 states it will accommodate the 13" wheels, but is capped at 2000# instead of 2200#. So, I am a little confused here. I need to keep the 13" wheels.

Reply

Kyle S.

12/1/2017

What you'll need is for everything to match up; the # 20440I-ST-60 axle you referenced is for an axle with a hub-face-to-hub-face length of 60" and spring-center-to-spring-center length of 48". It comes with idler hubs that have a 4 on 4" bolt pattern and will fit your 13" wheels. This is the only axle we carry that fits all those criteria and it does have a 2,000 lb weight capacity. If each of the aforementioned dimensions and capacities fits your trailer then the # 20440I-ST-60 axle is going to work for you.

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Answer 1

The parts and quantities do look mostly good, but you would only need one of the hanger kits #APS2. These are actually sold as a full kit for one axle. As to said axle, though, it would be a good idea to double check that your spring seats match the…

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Answer 2

We can very likely get this worked out. Can you tell me how far it is from spring center to spring center? This is the distance from the middle of one spring to the middle of the other. We will also need the hub face to hub face measurement. This is…

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Answer 3

You do indeed have a 12 inch rim. When you measure the diameter of the wheel, you'll need to measure the diameter of he wheel where the tire bead meets the wheel. I've provided you a cutaway diagram of a wheel showing where the measurement…

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Answer 4

Since you want to change your trailer hubs to the 5-on-4-1/2 bolt pattern I suggest you select a 60-inch axle kit that includes idler hubs, such as one of the two kits shown on the linked page. These two 2K-rated axle kits include 5-on-4-1/2 hubs,…

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Answer 5

The Dexter Trailer Idler Axle w/ Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,200 lbs #20545I-EZ-60-15 is a great starting point to upgrade your trailer. This will give you a standard size axle with good bearings, hubs, and EZ-lube…

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Answer 6

We don't have a standard axle that fits based on the spring seat center dimension you listed so your best option would be the Timbren Axle Less kit part #ASR35HDS02 which has a 3,500 lb capacity, a 4 inch lift built into it, and also attaches…

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Answer 7

From what I could find, the Harbor Freight trailers do say not to exceed 45 miles per hour in the owners manual. That being said, the tires they use are not rated very high and may be the limiting factor. The trailer you have looks to use a 5 on 4…

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Answer 8

The hub and drum assemblies included with Dexter axle, #35545E-ST-89, are too large to fit the 12 inch wheels on Harbor Freight trailer 69897. If the length measurements are correct (89 inches from hub face to hub face and 74 inches between spring…

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Answer 9

Yes, you could use axle #20440I-EZ-60 for your trailer project! The width of your trailer is the same as the spring seat center to center measurement on the axle (48 inches). The hubs on this axle will accommodate up to 12 inch wheels with a 4 on 4…

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Answer 10

That's going to depend on the specs of your trailer frame and current axle measurements. To go with a standard axle you'll need to measure the hub face to hub face measurement, and spring seat to spring seat measurement (shown in diagram…

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Answer 11

In order to find a replacement axle for your Harbor Freight trailer you will need to take some measurements to determine the correct axle length. The most important measurement is the distance from hub face to hub face. Additionally, you can measure…

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Answer 12

Regardless of the amount of leaves a leaf spring has if the capacity is the same between two of them they would both flex and bottom out the same. I would recommend you have your trailer and boat weighed so that you know whether or not you are…

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Upgrading the Axle on 4x8 Trailer

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