Dexter Trailer Axle w/ Idler Hubs - EZ-Lube - 4 on 4 Bolt Pattern - 72" Long - 2,200 lbs

Dexter Trailer Axle w/ Idler Hubs - EZ-Lube - 4 on 4 Bolt Pattern - 72" Long - 2,200 lbs

Item # 20440I-EZ-72

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Dexter Axle Trailer Axles - 20440I-EZ-72
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Straight trailer axle measures 72" from hub face to hub face and 58" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 10" to 13" wheels. EZ-Lube spindles for simple lubrication. Lowest Prices for the best trailer axles from Dexter Axle. Dexter Trailer Axle w/ Idler Hubs - EZ-Lube - 4 on 4 Bolt Pattern - 72" Long - 2,200 lbs part number 20440I-EZ-72 can be ordered online at or call 800-298-8924 for expert service.
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Dexter Axle Trailer Axles - 20440I-EZ-72

  • 2200 lbs
  • 72 Inch Long
  • Leaf Spring Suspension
  • Idler Hubs
  • 4 on 4
  • 58 Inch
  • Dexter Axle
  • EZ-Lube Spindles

Straight trailer axle measures 72" from hub face to hub face and 58" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 10" to 13" wheels. EZ-Lube spindles for simple lubrication.


  • 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
    • Low ride height makes it easier to load and unload your trailer
  • Straight, EZ-Lube spindles - no drop
    • Built-in grease zerks for simple lubrication
  • Spring seats and spindles are welded on
  • Cast iron idler hubs are sturdy and durable
    • Bearings, races, seals, grease caps, wheel studs, lug nuts, and marine-grade wheel bearing grease included
  • Limited 2-year warranty


  • Weight capacity: 2,200 lbs
  • Hub-face-to-hub-face length: 72"
  • Spring-center-to-spring-center length: 58"
  • Hub bolt pattern: 4 on 4"
  • Tubing outer diameter: 1-3/4"
  • Spindle size: 1-1/16"
  • Grease cap outer diameter: 1.986"
  • Wheel stud diameter: 1/2"
  • Wheel size: 8" - 12"

Bearing, Race, and Seal Information

  • Bearings
    • Inner bearing: L44649
    • Outer bearing: L44649
  • Races
    • Inner race: L44610
    • Outer race: L44610
  • Seal: 10-60
    • Inner diameter: 1.50"
    • Outer diameter: 1.987"

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.

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.

Dexter Axles

Dexter 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.

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"

T20BTR-EZ-7258 Dexter Replacement Axle Beam - Easy Lube - 72" Hub Face - 58" Spring Center - 2,200 lbs

8-91-05UC1-EZ Dexter Easy Lube Trailer Hub Assembly for 2,000-lb Axles - 4 on 4 - L44649

L11402 LubriMatic Marine Trailer Wheel Bearing Grease - 14 oz. Cartridge

Video of Dexter Trailer Axle w/ Idler Hubs - EZ-Lube - 4 on 4 Bolt Pattern - 72" Long - 2,200 lbs

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

Video Transcript for Dexter Trailer Idler Axle with Idler Hubs Installation

Speaker 1: Today we're going to be showing you how to install the Dexter Trailer Axle with Idler Hubs. Now, this offers the easy lube configuration and measures 72 inches long, and also offers a 2200 pound capacity. It's going to come with the four on four bolt pattern hub. Part number is 20440-EZ-72.Now, to ensure that this axle is going to be the right one for your application, you need to make two measurements. One is going to be from the center of the spring, to the center of the spring on the other side. This axle offers 58 inches from spring center to spring center.

The next measurement is going to be what they call the hub face to the hub face. So, it's going to be from one side to the other. It's going to be wherever your hub naturally sits. You want to measure from the point that the rim makes contact to the hub.So, we measure from here to the same spot on the other side, and what you're looking for there is 72 inches. So, we've got a 72-58 axle.

72 inches hub face to hub face, 58 spring center to spring center. Now, to install the spring on your axle, we're going to use U-bolts to connect it. So, our spring's going to fit around the underside. We'll have a plate to go underneath and two U-bolts to hold it. Now, we recommend using a new U-bolt kit.

The larger hole in the middle is gonna accept the small tab that sticks off there.The top portion of the bolt fits right into the bottom. My spring perch there. Bring that through, then we'll just take the provided nut, we'll snug these down once we have our axle in position, and we know that it's hanging the way we want it. Now, we can get our axle put up in position once we have that done on each end. You'll see here on the backside is going to be the area the slipper portion will slide into, and then we'll rotate it up into position, and we'll use our bolt here in the front.And we just want to rotate that up into position.

Once we align our hole, we can slide through our bolt. You can see that's going to fit right through that bracket up here on the spring eye. It'll go through our bracket, through the spring eye, come out on the inside. Just want to keep in mind you do want a little bit of movement. You don't want to squeeze that bracket down so tight, that it's pulled against the side of the springs. You want those to be able to move a little bit.On the backside of the bolt, right there at the head, you'll see this, lines that are on it. Those are designed to engage the bracket, and keep our bolt from turning. So, you don't want to turn the bolt side. We're going to tighten this down using the nut side only. Now once spring eye bolts are in place, just wanna kind of tap your axle, make sure that your U-bolts are sitting straight up and down, and we'll start to tighten these down evenly.Now, we're gonna go to each one and we're gonna begin to torque them down. Now, typically what you're looking for is torque-to-yield, is what they call it. So, we're going to torque these just until we see our plate start to deform just slightly. That'll give us the proper tension on those U-bolts, so we won't have to worry about them backing off.Now, whether you've just got the replacement beam, or the kit, you're gonna have to assemble your bearings, your hubs, everything, get it put in. Now, the hub kit is going to, of course, have our hub. You see it's go the black powder coat finish on it, has our four studs. These are on a four on four bolt pattern, which is gonna be very, very common. Inside you'll see the races the bearings are going to run on. It's really nice to get a full replacement kit when you do replace axles, just because you're starting right back from scratch, so everything's going to be brand new and fresh.It's going to come with an inner and outer bearing for each side. Course you'll have new lug nuts, you're gonna have the new dust cap, with the removable plug that allows you to get into the easy lube greaser, and we've got the bushing, the nut, and the keeper, that kind of holds all that in place and keeps it from backing out while on the end of the hub.So, this really gives you an excellent way to get everything replaced, and then once you have your bearing in the backside of your hub, you've got the new seal. That's going to keep all the grease inside, not let it seep out. Now, we're just gonna use some regular red style high temp grease. It's important that you use high temp grease. You don't want to use the universal or anything like that, just because as fast as this is gonna be turning, it builds up a lot of heat.We'll take one of our bearings. They're both gonna be the same, and then you can use a bearing packer. There are a few different methods for packing bearings, but these being as small as they are, it won't take long. Just get a glob on your hand, and you just kinda work it into that crack between the inner and outer portion, and as you do that, it's gonna come out at the top, right up in this area. Just wanna make sure you do that all the way around.But once we've got that coming out all the way around the top edge here, we'll call that one packed. That's gonna go right into the backside of our hub, and we'll show you how to put that seal in now. Now, to get our seal in place, we're gonna be using a seal driver. This is part number PTW83020. Just gives you a nice flat surface. It's pretty easy to work with. If you don't have a seal driver around, or if you don't want to make the investment in it, you could also, instead of placing my seal driver on the top, you could also use like a block of wood.So, you're just going to place it on there, begin to tap it down in place. You want to get it started all the way around. Once you've got it started all the way around, just drive it home evenly. Just like that. Now, inside the hub you can see just a little recessed area. I like to take a wad of grease and get it inside there, all the way around. It'll just save you some time with the grease gun, filling it up later.Now we're going to slide that on, place on our outer bearing, taper side in. Then we can slide on the bushing, and it's going to match the flat portion on the spindle there. Now it's time to thread on our nut. You see we've got free play there. We're gonna make sure that we compress our bearings in there well, with some slip joint pliers, and you'll feel that kind of tighten up a little bit. We don't want it to be overly tight, so we'll back that off just a little bit. We feel the proper tension, then it's time to slide on the keeper.Now, this is gonna go right over the nut, and you can see the little tab that sticks in That's gonna go in between the flat spot and the nut. So, that is gonna slide in that little slot right there. Now we'll use the grease gun, we're just gonna fill til we see grease starting to come out around the outside of our bearings there.Now we just wanna place our cap on, and we begin to tap it in place, just kinda like we did with the seal. You wanna make sure you get it started all the way around, then you can put it in the rest of the way. That little lip should go right up against the outside of the hub, then you'll place your rubber cap in. You see that's gonna cover our grease circ there, and keep any moisture and debris from getting in there and causing us any trouble.Now at that point, you can put your tire back on, torque down your lug nuts properly, you'll be ready to hit the road. You remove this cap, inspect the grease inside, and when needed, add a little bit more.That's gonna complete our installation of the Dexter Trailer Axle with Idler Hubs, offering the easy lube spindles, four on four bolt pattern hub, at 72 inches long.

Customer Reviews

Dexter Trailer Axle w/ Idler Hubs - EZ-Lube - 4 on 4 Bolt Pattern - 72" Long - 2,200 lbs - 20440I-EZ-72

Average Customer Rating:  4.4 out of 5 stars   (5 Customer Reviews)

Straight trailer axle measures 72" from hub face to hub face and 58" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 10" to 13" wheels. EZ-Lube spindles for simple lubrication.

- 20440I-EZ-72

Shipping was quick and product was just as described. I will be ordering from again 715451

- 20440I-EZ-72

everything worked fine. very satisfied. 690878

- 20440I-EZ-72

Didn't like the grease nipple way of greasing the bearings. There was no information on how to do it and how much grease to use. I ended up greasing it by hand instead and had to guess how much grease to use. I didn't have any other issues with it. 617222

- 20440I-EZ-72

I needed to replace a broken trailer axle. had everything I needed in Stock to replace it. Axle ,Springs, and hardware. Everything was shipped promptly and in good condition and ready to install. I couldn't ask for better service. 369620

- 20440I-EZ-72

A great product for the price installed easy and I bought 3 for a tri axle and couldn't be happier I made a 20 foot trailer to haul 4 wheelers and snowmobiles 236182


Still loving these hubs well worth the investment

Donald K - 01/25/2017


Ask the Experts about this Dexter Axle Trailer Axles

Do you have a question about this Trailer Axle?

  • Replacement Axle, Hubs and Wheels for 1997 Jayco Pop-Up Camper 8SD
  • Your photo of your Jayco pop-up does appear to show a corroded outer roller bearing along with your 5.70-8 tire and 4-on-4 wheel, such as # AM30153 and the similar items shown on the linked page. Your size wheel/tire is usually found on an axle rated for 2000-lbs, like the complete Dexter axle/hub kit # 20440I-ST-60 for example. This this axle weight rating usually uses either bearing # L44643 or # L44649 but due to the condition of your bearings it will be just about impossible to accurately...
    view full answer...

  • Can the Dexter Trailer Axle # 20440I-EZ-72 Mount with Pads Facing Up
  • Axles have a bow to them and they need to be installed with that bow facing down otherwise you get what you have now, an axle that seems like it's cambered way too far out. You need to have the axle rotated 180 degrees and have the spring seats installed on the other side of the axle so that they will attach to your trailer properly.
    view full answer...

  • What is the Lug Nut Torque Spec for 1/2 Inch Lug Nuts on a Dexter Trailer Axle
  • The hubs included with Dexter axle # 20440I-EZ-72 have 1/2 inch studs. For 1/2 inch you would torque the lug nuts down to 75 - 85 foot pounds.
    view full answer...

  • 72 Inch Trailer Axle Recommendation for a Utility Trailer
  • We have exactly what you need. You would want the Dexter Trailer Axle with Idler Hubs part # 20440I-EZ-72. This is a 72 inch axle from hub face to hub face, distance between leaf spring center to center is 58 inches and comes with 4 on 4 inch bolt pattern hubs. I attached a review video for this axle for you to check out as well.
    view full answer...

  • Difference Between 72 inch Dexter Axles 204401-EZ-72 and 20545I-EZ-72-10
  • The difference is the bolt pattern of the hubs that either axle comes with. The part # 20545I-EZ-72-10 comes with idler hubs that have a 5 on 4-1/2 inch bolt pattern and part # 20440I-EZ-72 comes with hubs with the bolt pattern 4 on 4 inch. The bearing fits pretty snugly in the hub and the seal acts to slightly hold it in as well.
    view full answer...

  • Replacement Idler Hub Assemblies And Wheels For Boat Trailer
  • My thoughts are you have a really badly marred spindle, but that many flats is still crazy. You are most likely overloading your axle with the weights you gave. The cuts into your spindle are not good and could be from a bearing seized up that could cause issues for sure including a blown tire. If you want to swap out the hub, as long as your inner diameter on your bearings is 1 inch, the Trailer Idler Hub Assembly for 2,000-lb Axles - 4 on 4 # AKIHUB-440-2-1K will work very well....
    view full answer...

  • Will Slipper Spring Work With Dexter Trailer Axle w/ Idler Hubs
  • You sure can use slipper springs with the Dexter Trailer Axle, part # 20440I-EZ-72. The only concern is your hangers you have on your trailer. You may find that the slipper spring is a bit longer and a hanger will need to be moved. The slipper spring I recommend is part # SP-039275. This is a 3-leaf spring that measures 30 inches long and 1-3/4 inches wide. It is designed to be used for 2,900 lb trailers axles so it may be just a bit stiffer ride. I have attached a link to a product...
    view full answer...

  • 72 inch Long Trailer Axle that is Compatible with 13 inch Wheels
  • The hub that comes with that axle is part # 8-259-5UC1-EZ which has a mounting flange that is not compatible with the mounting flange of 13 inch diameter wheels. For an axle of the same specs that can fit a 13 in ch wheel and has the same bolt pattern hub included you would want the # 20440I-EZ-72.
    view full answer...

  • Availability of Complete 72-Inch Axle Kit with Electric Brakes and 4-on-4 Hubs
  • We do offer some complete axle/hub/brake kits such as # 35545E-ST-EZ-89 from Dexter, but we do not have a complete kit with the exact combination of features you require. We do offer 72-inch axles with 58-inch spring seats and idler hubs in your 4-on-4 bolt pattern. Part # 20440I-EZ-72 is rated at 2200-lbs and features EZ-Lube spindles. Part # 20440I-ST-72 is rated at 2000-lbs and has standard spindles. Both kits will work with 12-inch wheels and both come complete with bearings, races...
    view full answer...

  • Do Hubs Come Pre-Installed on Dexter 2,200 Pound Trailer Axles
  • We do have a 72 inch, 2,200 pound trailer axle with hubs, # 20545I-EZ-72-10, but the hubs are not pre-installed. Everything is included (bearings, seals, races (the races already pressed in), grease caps, and lug nuts) just not pre-mounted. I have included a link to a video showing an example installation of this axle for you. This axle has hubs with a 5 on 4-1/2 bolt pattern. It is also available with a 4 on 4 bolt pattern # 20440I-EZ-72.
    view full answer...

  • Can the Spring Seats On a Dexter 2,200 Lb Axle Be Moved and Re-Welded
  • Yes, you can move the spring seats to 53-1/2" apart on the Dexter 2,200 Lb Trailer Axle part # T20BTR-EZ-7258, part # 20440I-EZ-72, or part # 20545I-EZ-72-10. This is pretty common practice as manufactures just place the spring seats in a common spot but the customers can move them as needed. That said, you will likely destroy the old ones getting them off so I also recommend getting the Axle Spring Seat part # TRSS175 (2).
    view full answer...

  • Replacement Hub Recommendation for the Axle part # 20440I-EZ-72
  • The exact hub that comes with the axle part # 20440I-EZ-72 is the part # 8-91-05UC1-EZ.
    view full answer...

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Info for this part was:

Written by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Installed by:
Jeff D
Installed by:
Randy B
Updated by:
Adele M
Updated by:
Laura H
Video by:
Kathleen M
Video Edited:
Dustin K

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