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  1. Trailer Axles
  2. etrailer
  3. 3500 lbs
  4. 95 Inch Hub Face
  5. 5 on 4-1/2 Inch
  6. 80 Inch Spring Center
Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 95" Long - 3,500 lbs
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Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 95" Long - 3,500 lbs

Part Number: e52SR
In Stock
$764.83
Trailer Axles
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Trailer axle measures 95" from hub-face-to-hub-face and 80" from spring-center-to-spring-center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and mounting hardware. Easy Grease spindles for simple lubrication. Great Prices for the best trailer axles from etrailer. Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 95" Long - 3,500 lbs part number e52SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (272)
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etrailer Trailer Axles - e52SR

Highlights

  • 3,500-lb Capacity: Handles medium-duty trailers for steady, controlled towing.
  • 95" Hub Face x 80" Spring Center: Matches common trailer widths for easy replacement.
  • Electric Brakes Included: Delivers strong, reliable stopping without hydraulic lines.
  • Easy Grease Spindles: Built-in zerks let you lube bearings quickly and cleanly.
  • Pre-Greased Hubs: Bearings, races, and seals are installed for faster, mess-free setup.
  • 2-3/8" Round Steel Beam: Underslung design keeps trailer low for easier loading.

Features to know about

Smooth, Controlled Towing Every Mile: 3,500-lb Rated Round Axle with Electric Brakes

A solid axle is the backbone of a steady, predictable tow. This one is rated for 3,500 lbs and built from high-strength steel with a 2-3/8" diameter for dependable performance. The round beam includes a precision bend that creates a zero-camber angle, keeping the tires in consistent contact with the road for straight-line stability and even tread wear. It’s the kind of balance that makes long hauls feel easier and keeps the trailer tracking true.

Less Hassle During Setup: Pre-Greased Hubs and Easy Grease Spindles

Nobody enjoys packing bearings by hand. The pre-greased hubs come ready to go with the bearings, races, seals, and lug nuts already installed. Each spindle includes a built-in grease zerk so routine lubrication takes just a quick pump of the grease gun—no need to disassemble anything. Once the grease caps are on, the setup is clean and fast, and you’re ready to hit the road.

Close-up image of a pre-greased trailer hub with the grease cap removed, revealing greased bearings inside the hub assembly for easy installation.

Confident Braking Without the Extra Plumbing: Integrated Electric Brakes

This axle comes with electric brake assemblies already in place, so there’s no need to mess with actuators or hydraulic lines. The adjuster plugs and mounting hardware are included, and the brakes are easy to tune for smooth, consistent stopping. It’s a straightforward system that puts reliable control at your fingertips every time you tow.

Smart Fit for a Low, Easy-Load Trailer: 95" Hub-Face and 80" Spring-Center Dimensions

With a 95" hub-face-to-hub-face span and 80" spring-center spacing, this axle is ready for standard leaf spring setups. The underslung spring seats are welded to the underside of the beam, giving your trailer a lower deck height that makes loading and unloading simpler. The design also keeps the center of gravity low for a more stable feel on the road.

Built Strong for Years of Use: Tested and Certified Construction

From its forged spindles with 40% stronger welds to its cast-iron hubs, every part of this axle is designed for durability. It’s CSA, QAI, and SAE-N certified after extensive braking and performance tests, so you know it meets real-world safety standards. The complete assembly weighs about 104 lbs, with each component built to handle the miles ahead.

Specs

Weight and Capacity

  • Weight capacity: 3,500 lbs

Dimensions

  • Hub-face-to-hub-face length: 95"
  • Spring-center-to-spring-center length: 80"
  • 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
  • Axle diameter: 2-3/8"

Technical diagram of a trailer axle showing hub-face-to-hub-face (A) and spring-center-to-spring-center (B) measurements for proper trailer axle fitment.

  • A — Hub face: 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).
  • B — The spring center: 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.

Wheel Information

  • Hub bolt pattern: 5 on 4-1/2"
  • Wheel size: 13" to 15"

Bearings, Races, and Seals

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

Warranty

  • Limited lifetime warranty

Note

  • Axle does not come fully assembled.

BS35RUW95.00080.000 etrailer by AxleTek 3,500 lb Axle Beam - 95" Hub Face - 80" 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





Customer Satisfaction Score:

Ratings & Reviews

4.4

272 reviews
Review sort icon
Trailer axle measures 95" from hub-face-to-hub-face and 80" from spring-center-to-spring-center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and mounting hardware. Easy Grease spindles for simple lubrication.

by:

Awesome axle the spring brackets where wrong from the description but moved and rewelded to fit with zero problems would definitely buy from this company again



by:

Awful service. Ordered an axle they sent a hitch. Cancelled order cause they weren’t going send axle out till they picked up the hitch lol. They still haven’t picked up and won’t refund money till ups picks up. Look around I found an axle place close by 30 minutes away with axles in stock. I will never use etrailer again!!!!!



by:

Delivered as described, earlier than expected, less costly than others with free shipping!
Careful measurements and the axle bolted right up.
Fully greased hubs with seals and bearings installed made assembly quick and easy.
Waiting on new tires for the trailer and will road test soon.
Couldn’t be happier with this purchase from Etrailer!



by:

The axle and spring seat are doing well after a year. Even with my shade-tree mechanic welding abilities and thousands of grueling miles thru some of the roughest highways in North America (namely West Virginia) both are holding up to the task.



by:

I ordered two axles to upgrade my trailer capacity to what the frame is rated for, 12,000lbs. The axles have great bearing seats and backing plate studs. The backing plates are fully assembled and ready to connect to the wires already installed into the axle tubes. The hub assembly went smooth and only one set of break shoes needed adjustment. A good buy along with the 5 fully assembled tires and wheels.



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Buying the kit complete was a good decision. It showed up early than predicted and having the grease and wires already in place shows your professionalism. I would recommend this product and company to everyone in the market.



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Excellent!



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GREAT TO DEAL WITH. THANK YOU



by:

This was supposed to be an assembled axle.... you send a pile of parts!

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

6/30/2025

Hey Mark. I'm sorry for any miss communication on our end. We do note that the axle doesn't come fully assembled. If you need anything else, please let me know!



by:

Great product and customer service. Perfect replacement for my damaged axle. Would purchase from again.



by:

Quality looks good. 2 bolts missing from brake assembly but service is on the ball sending them.



by:

Great axle so far has handled everything I have put on it so far and that's been a lot. Bought this because I managed to bent the axle by hauling my wife's equinox on it and hit a pot hole the size of grand canyon that bent the axle beyond safe operation. The other axle didn't get bent nearly as bad as this one but will also be replaced in the next year or so. But so far this replacement brake axle has held up pretty well over the last year.



by:

Had to rebuild the brakes and the axel was two inches longer than my old one.
however it was easy to install and everything ready to go, except the brakes.
I was done in a couple hours and I can't move well. overall a good product.
could use some wiring instruction for those of us that don't have the complete old axel .



by:

There was no castle nut kit included.
I
had to source the parts from another vender to complete the job. Very disappointed



by:

The axle and brakes were a perfect fit. All of the parts I needed were included and installation was straight forward. I could not be happier.

Christopher H. profile picture
Etrailer Expert

Christopher H.

8/14/2026

Really appreciate the feedback and photo David! Glad the # e52SR was a straightforward swap. What are you typically hauling?


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video by:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Carrie F
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Employee Ryan F
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Employee Conner L
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Employee Mike S
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