Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs

Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs

Item # 20545I-ST-60-15

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Dexter Axle Trailer Axles - 20545I-ST-60-15
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Product Images


  • 2000 lbs
  • 60 Inch Long
  • Leaf Spring Suspension
  • Dexter Axle
  • Idler Hubs
  • 5 on 4-1/2
  • 48 Inch
  • Standard Spindles
Trailer axle measures 60" from hub face to hub face and 48" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 12" to 15" wheels. Lowest Prices for the best trailer axles from Dexter Axle. Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs part number 20545I-ST-60-15 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (2)
  • Q & A (14)
  • Videos (1)
  • Photos
  • Why etrailer?

Dexter Axle Trailer Axles - 20545I-ST-60-15

Trailer axle measures 60" from hub face to hub face and 48" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 12" to 15" wheels.


Features:

  • 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 spindle - no drop
    • Standard grease application
  • 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


Specs:

  • Weight capacity: 2,000 lbs
  • Hub-face-to-hub-face length: 60"
  • Spring-center-to-spring-center length: 48"
  • Hub bolt pattern: 5 on 4-1/2"
  • Tubing outer diameter: 1-3/4"
  • Spindle size: 1-1/16"
  • Grease cap outer diameter: 1.986"
  • Wheel stud diameter: 1/2"
  • Wheel size: 12" - 15"


Bearing, Race, and Seal Information

  • Bearings
    • Inner bearing: L44649
    • Outer bearing: L44649
  • Races
    • Inner race: L44610
    • Outer race: L44610
  • Seal: 10-9
    • 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-6048 Dexter Replacement Axle Beam - 60" Hub Face - 48" Spring Center - 2,000 lbs

8-258-5UC1 Trailer Hub Assembly for 12" to 15" Wheels - 2,000-lb Axles - 5 on 4-1/2 - L44649

L11404 LubriMatic Marine Trailer Wheel Bearing Grease - 16 oz. Can







Video of Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs


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




Video Transcript for Dexter Axle Trailer Axles - Leaf Spring Suspension - 20545I-ST-60-15 Review

Rate your transcript OrderClientKevin BrossRef #20630Order #TC0930825468 Today we're going to review part number 20545I-ST-60-15, this it the Dexter Trailer Axle with the standard spindles, comes with the idler hubs that have a 5 on 4-1/2" bolt pattern; the axle is 60" long; has a 2,000-pound weight capacity. Now this part number include everything shown here on the table. It includes the axle itself. Includes the 2 idler hubs, includes the inner and the outer bearings; also includes the bearing races and those are actually already pre-installed in the hubs already. Includes the grease seals, the dust caps and then the 1/2" lug nuts and also a tub of the marine-grade wheel bearing grease. Now this axle beam can act as part of your trailer's suspension system. You can use this to replace an axle already on your trailer or you can use it to fabricate a suspension to fit your specific application. It is constructed of a high-strength steel.

If you notice these spring seats are welded to the underside on each end and when they do that that's where your leaf springs would mount to. When they put it to the underside this is actually called a underslung design axle and with this type of design it'll give you a nice, low ride height. It'll make it easier to load and unload your trailer. You can see the spindles are a straight spindle or there's no drop to them. It is a standard grease application. It does come with the castle nut and the cotter pin.

And when we do ship this we do protect these ends here. Basically, what we do is when go to ship them, the machine area will be coated with a grease and then bubble wrap and then we use a very thick corrugated tube that would slide over the machine area and then that would be wrapped to protect both ends, so that will help protect your axle when it is shipped. The spring seats you can see on each end are welded on. The spindles are welded on. Now also on this axle, it's very hard to see in the video, but actually the very center right here of the axle will bend upwards as I bend to it. The reason they do this, this bend will create a zero camber angle for your even road to tread contact across the width or your trailer tire.

So basically what happens is when this is on your trailer and you load the trailer down with your weight, it will actually push down on that axle and that bend will actually give and sort of even it out and that will ensure that the angle of the wheels on your trailer are correct for your towing needs. That will help as far as straight line acceleration and steady controlled towing. Now both of these idler hubs are a cast iron and they are sturdy and durable. They do have a bolt pattern of 5 on 4-1/2". The wheel stud itself has a 1/2" diameter, so they are designed to use the 1/2" x 20 lug nuts that are included. Now this idler hub is designed to use a wheel size of 12" to 15" and basically the inner and outer bearing you'd see would drop right into the race, that's the outer bearing, the inner bearing, both of these, this hub uses the same size, inner and outer bearing. So once you drop the inner bearing in and your grease seal will be tapped in there to hold it into place, then once everything is installed, to tight it down you can put the dust cap over the very end and then once you put your wheels and tires on to this hub, you can tighten it down or hold it into place with these 1/2" x 20 lug nuts. Now our specs on the axle is 2,000-pound weight capacity.

The tubing outer diameter right about here is 1-3/4". The spindle diameter is 1-1/16". Now on an axle there are multiple ways to measure the length of an actual beam, but the 2 most accurate ways are going to be hub-face-to-hub-face and spring-center-to-spring-center. I'm going to show you both of those, now the hub-face-to-hub-face is a little harder if the hubs aren't on it, but basically what that means is you'll be measuring once the hubs are installed on each end. You measure from the base of 1 wheel stud down the axle to the base of the wheel stud on the other hub and that will get you hub-face-to-hub-face length. So what I'm going to do is I don't have the hubs on but I'm going to try to give you an idea here. Measure from where they would roughly be located. You'll see it will be right at 60" for hub-face-to-hub-face length. Now the other length, the spring-center-to-spring-center, this I will be able to show you pretty easy, just measure from the center of the spring seat to the center of the spring seat on the other end. Now this measurement will also give you the approximate width of your trailer. So if we go center to center, you can see it's right at 48". So basically, if you're replacing you trailer's axle, you should be able to figure out which type you need by determining the trailer's capacity, the bolt pattern of the wheels, the brake tight if it uses brakes and then the 2 lengths I mentioned, the hub-face and the spring-center lengths. But that should do it for the review of part number 20545I-ST-60-15, it's a Dexter Trailer Axle with the standard spindles, comes with the idler hubs that have the 5 on 4-1/2" bolt pattern. .


Customer Reviews

Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs - 20545I-ST-60-15

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

Trailer axle measures 60" from hub face to hub face and 48" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 12" to 15" wheels.

- 20545I-ST-60-15
by:

Excellent axle. Easy to assemble and perfect for replacing or building a new trailer. 443674



- 20545I-ST-60-15
by:

Great stuff, great help, great prices... my new go to trailer vendor 183732


2
2

Ask the Experts about this Dexter Axle Trailer Axles
Do you have a question about this Trailer Axle?


  • Replacement Axle for Harbor Freight Utility Trailer
  • 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, bearings, races, seals, lug nuts and bearing grease. Kit # 20545I-ST-60-10 works with 8- to 10-inch wheels and kit # 20545I-ST-60-15 works with wheels from 12- to 15-inches diameter. If you trailer's existing axle is installed below your leaf...
    view full answer...

  • Recommended Axle With Hubs For Compatibility With 8 Inch Wheels For Boat Trailer
  • Unfortunately we don't have any hubs that fit your current spindles. I recommend replacing your axle and that will be determined based on the length of your axle and capacity needed. For a galvanized steel option ideal for a boat trailer, I recommend the CE Smith Trailer Axle w/ Idler Hubs - 5 on 4-1/2 Bolt Pattern - 57-1/2" Long - 1,800 lbs # CE33201GA-HUB. Another option is the Dexter Trailer Axle w/ Idler Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 72" Long - 2,000 lbs # 20545I-EZ-72-15...
    view full answer...

  • Recommended Trailer Axle For Haul Master 4x8 Foot Trailer
  • Replacing your existing axle with the Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs # 20545I-ST-60-15 or Dexter Trailer Axle with Idler Hubs - 4 on 4 Bolt Pattern - 60" Long - 2,000 lbs # 20440I-ST-60 will work fine as long as the Hub-face-to-hub-face length is 60 inches and spring-center-to-spring-center length is 48 inches. This will give you a higher capacity axle but you will still be limited to whatever weight capacity the weakest component of...
    view full answer...

  • Can Underslung Axles Be Used on a Small Homemade Trailer
  • People run underslung trailer axles all the time. We have yet to hear of someone with an issue due to it. Especially on a lighter trailer like what you are building. If that is the route you would prefer to go with the axle configuration you would be just fine. A 1,000 lb spring like the part # SP-177275 is a slipper spring that would work well considering the weight of your trailer. Since trailers don't typically run shocks they can be a bit bouncy, especially when unloaded.
    view full answer...

  • Availability of 60 inch Long Trailer Axle for a Jon Boat
  • Trailer axles normally have a slight bow to them to help with the tire alignment when loaded. It would take quite a bit of force to flatten the axle out to give it an additional inch of length. Are you measuring right to the center of the hangers and not to the outsides? It is also possible that your axle is just a bit longer. There are several different axle dimensions out there and yours doesn't necessarily have to match up with what we sell. Does the axle seem like it's too long...
    view full answer...

  • Replacement Trailer Axle with 62" Hub Face and 48" Spring Perch Measurement
  • Unfortunately, we do not have the outside bearing with an inner diameter of .75". The smallest bearing we carry has an inside diameter of 1". The only option I can offer you is to replace the axle which in some cases is also the best option. If you can give me your axle length (hub face to hub face) and capacity I would be able to offer you a replacement.
    view full answer...

  • Will the Hubs Included with Trailer Axle 20545I-ST-60-15 Hold Up at Highway Speeds
  • The hubs included with trailer axle # 20545I-ST-60-15 will work great at highway speeds, surface road speeds and everything in between. But you have to also consider the tires used. Some trailer tires are rated for a maximum speed of 65. Others are rated higher; up to 81 miles hour. It just depends on the tire. If you can tell me the tire size you need I can recommend some tires for you.
    view full answer...

  • Leaf Springs and Hanger Kit for 2,000 Pound Dexter Axle
  • You could mount springs to the top of Dexter axle # 20545I-ST-60-15 but you would have to weld on new spring seats # TRSS175. The springs seats that come with the axle are welded to the bottom. You can't flip the axle over because then the natural bow in the axle would be facing the wrong way, the tires would stick out at the bottoms, and the capacity would be diminished. The taller a trailer is the more susceptible to sway it becomes because the center of gravity is higher. Just something...
    view full answer...

  • Recommended Replacement Axle For 2,000 lb Capacity Escort Boat Trailer
  • The closest through axle we have is the Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs # 20545I-ST-60-15. This is obviously 1 inch shorter and has springs centers at 48 inches apart. If the spring locations or the 1/2 inch on each side will cause problems, then I recommend the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Regular Tires - 2,000 lbs # A20RS545. This comes with the 5 on 4-1/2 bolt pattern hubs as well, but does...
    view full answer...

  • Trailer Axle With Spring Center To Spring Center Measurement Of 48
  • I do have an option that may work for you however, none of our trailer axles have a spring center to spring center measurement of 48" and a hub face to hub face measurement of 57.5". Therefore, no, the CE Smith Trailer Axle w/ Idler Hubs part # CE33201GA-HUB will not work for you as the spring center measurements are too short for your current application. I do have a trailer axle with spring center to spring center measurement of 48" in the Dexter Trailer Axle with Idler Hubs part #...
    view full answer...

  • Availability of Trailer Axle that is 60 inches Hub to Hub and 48 inches From Spring Seat to Seat
  • All trailer axles are going to have the bow in them that you are referring to. This is so that when the weight of the trailer is put on them they flex slightly and then the axle ends up being flat. Without the bow in them the alignment of your wheels/tires would be off. The part # 20545I-ST-60-15 matches your dimension specs and has a 2,000 lbs capacity. It would be the best option we have.
    view full answer...

  • Choosing a new Axle and Wheels for Teardrop Camper
  • In order to choose a replacement axle you will need to know your current axle's capacity as well as its hub face to hub face dimension, which is 89" (A) in the example photo, and spring seat to spring seat dimension, which is 74" (B) in the photo. From there, you'd be able to find the axle you want; I recommend getting a replacement that comes with hubs for a complete fresh start with your suspension system. Once you have the axle you want, you can concentrate on wheels. For example,...
    view full answer...

  • How to Choose Replacement 2000 lb Trailer Axle
  • To see if any of the 2000 lb axles we offer will work for you, I'll need to know the center spring seat to spring seat distance (which you've kindly provided) as well as the hub face to hub face dimension. I've provided a diagram showing how to take the measurements. The closest thing I have to the dimensions you provided is the # 20545I-ST-60-15 which has a 60 inch hub face to hub face dimension and a 48 inch spring center distance between spring centers. If that won't work for...
    view full answer...

  • Axle Replacement on 4x6 Trailer for 6 Bolt Hub Compatibility
  • The only axle option we have for a 4x6 foot trailer to get you the bolt pattern you desire is the Universal Fit Timbren Axle-Less Suspension System. This will not have springs, but will instead use Aeon Rubber suspension that is integrated in the assemblies. Then if you don't have a cross brace in the axle location you will need to use a 2 inch square tube (not included) in the integrated holes of the assemblies. I recommend the Timbren Axle-Less Trailer Suspension System - Spindle...
    view full answer...


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Info for this part was:

Expert Research:
Michael L
Written by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Dustin K
Photos by:
Sam P

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