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  1. Trailer Axles
  2. etrailer
  3. 3500 lbs
  4. 89 Inch Long
  5. Leaf Spring Suspension
  6. 5 on 4-1/2
Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs

Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs

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Trailer axle measures 89" from hub face to hub face and 74" from spring center to spring center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and mounting hardware. Easy Grease spindles for simple lubrication. Lowest Prices for the best trailer axles from etrailer. Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs part number e43SR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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etrailer Trailer Axles

  • 3500 lbs
  • 89 Inch Long
  • Leaf Spring Suspension
  • 5 on 4-1/2
  • 74 Inch
  • Electric Brakes
  • Easy Lube Spindles
  • etrailer

Trailer axle measures 89" from hub face to hub face and 74" from spring center to spring center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and mounting hardware. Easy Grease spindles for simple lubrication.


Features:

  • Round axle beam acts as part of your trailer's suspension system
    • Replace an axle on your trailer
    • Fabricate a suspension to fit your application
  • High-strength steel construction
  • Bend in axle creates zero camber angle for even road-to-tread contact across the width of your trailer's tires
    • Best for straight-line acceleration and steady, controlled towing
  • Underslung design - spring seats welded to underside of axle for mounting leaf springs (sold separately)
    • Low ride height makes it easier to load and unload your trailer
  • Straight, Easy Grease spindles - no drop
    • Patented welding process prevents spindle failure with 40% stronger welds
    • Built-in grease zerk for simple lubrication
  • Spring seats and spindles are welded on
  • Electric brakes are easy to install - no actuator or hydraulic lines necessary
    • Adjuster plugs, mounting bolts, and hardware included
  • Cast iron hubs are sturdy and durable
    • Pre-greased hubs with bearings, races, seals, and lug nuts - no need to pack bearings
  • CSA, QAI, and SAE-N certified
  • Lifetime technical support from the experts at etrailer.com


Specs:

  • Weight capacity: 3,500 lbs
  • Hub-face-to-hub-face length: 89"
  • Spring-center-to-spring-center length: 74"
  • Hub bolt pattern: 5 on 4-1/2"
  • Drum dimensions: 10-15/16" diameter x 2-11/16" wide
  • Grease cap flange diameter: 1.988"
  • Wheel stud dimensions: 1/2" diameter x 1-1/4" long
  • Wheel size: 13" to 15"
  • Limited lifetime warranty


Bearings, Races, Seal Information:

  • Bearings (included)
    • Inner bearing: L68149 (inner diameter 1.378")
    • Outer bearing: L44649 (inner diameter: 1.063")
  • Races (included)
    • Inner race: L68111
    • Outer race: L44610
  • Grease seal (included): 58846
    • Inner diameter: 1.719"
    • Outer diameter: 2.565"

Axle Dimensions

Hub Face and Spring Center Measurements on Standard Trailer Axle

There are multiple ways to measure the length of an axle beam, but the hub-face-to-hub-face and spring-center-to-spring-center lengths are the most accurate. Hub face (A) refers to the length of the axle measured from the base of one wheel stud to the base of the wheel stud on the opposite side of the axle (when hubs are mounted on the beam).


The spring center (B) is the approximate width of your trailer. It is measured from the center of the spring seat on one side of the axle to the center of the seat on the other. This axle beam comes with the spring seats welded on.


If you are replacing your trailer's axle, you should be able to figure out which type you need by determining your trailer's capacity, the bolt pattern of your wheels, the brake type and the aforementioned lengths.


etrailer Axles

etrailer axles are made of high-strength steel and come with spindles and spring seats welded on. The spring seats are attached to the underside of the axle so that the leaf springs (sold separately) can mount beneath the axle. The result of this underslung design is a trailer that rides a bit lower for quick and easy loading and unloading.


Each axle is manufactured to create a certain camber angle. This ensures that the angle of the wheels is correct for your towing needs. Because the primary concern when towing is maintaining controlled, in-line movement, each axle is made so that your trailer's tires will run along the pavement evenly, with contact across the width of the tread. The result is excellent straight-line acceleration for steady, in-line tracking. You might notice the bend near the center of the axle; this is what ensures the proper camber angle. Having the center ride a bit higher and the sides of the axle bent lower allows the axle to give just enough to compensate for the load.


Thoroughly Tested for Safety

This hub-and-drum assembly meets the requirements for certification by the Canadian Standards Association (CSA). The CSA creates standards, which when complied with ensure a safe and quality product. This assembly underwent extensive testing to measure stopping distances when braking. This assembly has also been tested by QAI Laboratories for braking performance in a complete automotive setup and under real-world conditions to provide the most realistic scenario for the everyday driver.


Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.


Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: 8 on 6-1/2 means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)


Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: 5 on 4-1/2 means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)


Bolt Pattern - Side

Measuring the distance (D) from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"


BS35RUW89.00074.000 etrailer by AxleTek 3,500 lb Axle Beam - 89" Hub Face - 74" Spring Ctr

B10E-21 10" Electric Brake Assembly for 3.5K Axle - Left Hand

B10E-22 10" Electric Brake Assembly for 3.5K Axle - Right Hand

19-100 Hub-Drum Assembly Compl Boxed - 3.5K - 5 on 4.5 - PG EZ

Item # e43SR





Video of Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of etrailer by AxleTek Trailer Axles - 3,500 lbs 89 Inch Axle with Electric Brakes - e43SR

Hi there, I'm Michael with etrailer.com. Today, we're gonna take a quick look at this trailer axle with electric brakes. This is going to be a great option for replacing an axle on your trailer, whether you currently have an idler axle and your needing to switch it out so that you can get brakes put on there, or if you currently have an axle like this with electric brakes and something's not working on it, and you need to replace it, this is gonna do a great job for you. This is a round axle beam, that's got a sturdy steel construction, it's got a maximum weight capacity of 3,500 pounds, so it will work really well for your trailers with that same weight capacity. To measure our length, we are going to have two very important measurements to take. So you can see that our spring seats are welded in place here, so from the center of one spring seat to the center of the other spring seat, we're right at 74 inches.

From our hub face on one side to our hub face on the other, it's right at 89 inches, so make sure that that's gonna work for your trailer. You can see, right here in the middle, we do have a little bit of a bend, and that is going to be our camber to ensure that even when we have weight on our trailer, our wheels are going to ride nice and even getting that full traction that we need making sure that they're not gonna wear unevenly, so having that camber in there is gonna ensure that those are going to ride correctly, this is gonna be great for your straight line towing. Our spindles on the sides are welded in place, they are a straight installation, so there's no drop or rise to them at all, that's just straight in line with our axle. They are easy lube spindles, so you can see, we do have that grease zerk in the middle there, that's gonna make it much easier for us to get our whole system lubricated up. Our cap that will go on the outside once we have everything installed, has this plug here in the middle that we can simply pull away, get access to that grease zerk, hook up our grease gun, give it enough grease to lubricate it, you're not gonna have to worry about unhooking everything, pulling it all out, so that we can grease up the bearings, everything is gonna be very accessible there with that easy lube spindle.

And our spindles are welded in place using a patented welding process that prevents spindle failure with 40% stronger spindles, so a really nice option there to make this a lot more durable for you. You can see that our spring seats, like I said, they are welded in place, they're welded to the underside of our axle, so that we can mount our leaf springs in the underslung position to lower our deck height for easier loading and unloading. Our electric brakes are gonna be extremely easy to install, you don't have to worry about actuators or hydraulic lines, just super easy to run your wiring. You can see, we do have a double wire that runs through the axle, so that we can connect one side to the other. Your adjuster plugs and mounting hardware are included with this, so very easy to get installed.

And then our idler hubs here are cast iron, so they are gonna be very sturdy and durable. Our hub bolt pattern is gonna be 5 on 4 1/2 inches, So it's gonna work for your wheel sizes 13 inches up to 15 inches. The bearings, races, seals, and lug nuts are all included, they do come pre-greased, so you're not gonna have to worry about packing your bearings, just get it all installed and they'll be ready to go. This is CSA, QAI, and SAE-N certified, so you can trust it's made to those quality standards, it's gonna hold up well and do a good job for you, and it also comes with a limited lifetime warranty, so if you we're to ever have any problems with it, you're more than welcome to reach out to us here at etrailer.com. We're always happy to work with our customers to make sure that you're getting good quality products and having a good experience.

So overall, I think this is gonna be a really nice option for those of you who have a trailer that's got that 3,500 pound weight capacity, with those measurements that we stated before, to ensure that this is going to fit your trailer with those electric brakes, I think you'll be very happy with it. So that's gonna complete our look for today. Again, I'm Michael with etrailer.com. Thanks for watching..

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Ask the Experts about this etrailer Trailer Axles

  • Parts Needed To Add Electric Brakes To An M416 Trailer
    Finding the correct electric brakes for your M416 military trailer will depend on a few things. First will be the axle capacity. I did a lot of looking, but I couldn't find this listed anywhere. Due to the weight and carrying capacity, odds are you have a 3,500 pound axle though, so I will be basing everything off that. The etrailer.com Electric Trailer Brake Kit # AKEBRK-35-SA will be what I recommend for a 3,500 pound axle as they will have a good price point, includes the right and...
    view full answer...
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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B

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