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Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 - Pre-Greased

Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 - Pre-Greased

Item # AKIHUB-5475-35-K
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AKIHUB-5475-35-K - For 3500 lbs Axles etrailer Trailer Hubs and Drums
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Hub is designed for use on trailer idler axles. Fits 3,500-lb axles with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, and lug nuts included. Lowest Prices for the best trailer hubs and drums from etrailer. Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 - Pre-Greased part number AKIHUB-5475-35-K can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (17)
  • Q & A (4)
  • Videos (1)
  • Photos
  • Why etrailer?

etrailer by AxleTek Trailer Hubs and Drums - AKIHUB-5475-35-K

  • 5 on 4-3/4 Inch
  • For 3500 lbs Axles
  • Hub
  • Standard
  • 13 Inch Wheel
  • 14 Inch Wheel
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • etrailer
  • L44649
  • 1/2 Inch Stud
  • L68149

Hub is designed for use on trailer idler axles. Fits 3,500-lb axles with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, and lug nuts included.


  • Trailer hub assembly fits idler axles
    • Bearings, races, seal, grease cap, and lug nuts are included
  • Sturdy iron construction
  • Zinc-enriched paint finish
  • Pre-greased idler hub is easy to install - no need to pack bearings
    • Lithium complex, multipurpose grease keeps bearings lubricated
  • QAI and CSA certified


  • Application: 3,500-lb trailer axles with #84 spindles
    • Compatible with standard axles from most manufacturers, including AxleTek, Dexter, Lippert (LCI), and AL-KO
  • Wheel size: 13" to 15"
  • Bolt pattern: 5 on 4-3/4"
  • Wheel stud dimensions: 1/2" diameter x 1-5/16" long
  • Grease cap flange diameter: 1.988"
  • Weight capacity: 1,750 lbs
  • Limited 1-year warranty

Bearing, Race, and Seal Information

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

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"

KH-5475-07-19 AxleTek Trailer Idler Hub Assembly for 3.5K Axle with Hardware - 5 on 4-3/4 - Pre Greased

Compare to Dexter 845475UC1

Video of Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 - Pre-Greased

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

Video Transcript for etrailer Trailer Hubs and Drums - Hub - AKIHUB-5475-35-K Review

Today we're going to take a look at the trailer idler hub assembly for 3500-pound axles. This has the 5-on-4-3/4 inch bolt pattern. Now this trailer hub assembly will fit trailer idler axles. This hub assembly includes everything shown here on the table. The hub itself, the bearing races are included. They are preinstalled in the hub.

Right here you can see the outer bearing race. Turn it around and there's your inner bearing race. The bearings are included, both the inner bearing, outer bearing, the grease seal, zinc-plated grease cap and the five lug nuts. Now this hub is a sturdy iron construction, has a nice zinc enriched 00:00:35 paint finish to it. It is certified by USSAE standards and CSA which are the Canadian standards. A few specs on this.

The application, this is for a 3500-pound trailer axle with the number 84 spindles and it is compatible with axles from most manufacturers including Dexter, Lippert and Al-Ko. The hub flange diameter which would be the measurement from this side to this side is 6-1/2 inches. Because of the larger hub flange it does require 14-inch and large wheel sizes. The bolt pattern on this is a 5-on-4-3/4 inch bolt pattern. The wheel stud size 1/2 inch by 20 and the weight capacity on this hub is 1,750 pounds so when this is combined with one on the other side it will meet your 3,500 pound axles. Now the parts right here, I'm going to go through these all and show you where they install in the hub.

We'll start with the inner bearing which is the larger of the two. That's a part number L68149. The inside diameter of this right here is 1.378 and that will go right on to the inner bearing race just like that right there. To hold it in is the grease seal. It has an overall diameter of 2.565.

That would tap in just like that and hold that into place. Now the outer bearing which is the smaller of the two is part number L44649. Inner diameter on this is 1.063 and that would go right into the outer bearing race just like that. To hold that in you'd use this zinc-plated grease cap. It has a 1.99 flange diameter. Tap that in just like that and you're all ready to go. Now for this video I'm just showing you where the parts go but of course when you go to install this, you do want to make sure that your bearings will be fully packed with grease before installing them on your axle. The last thing you'll have is the five 1/2 inch by 20 size lug nuts. Those would be used to hold your wheel and tire assembly to the hub. Once you put your wheel up on the studs, you just go ahead and take your lug nuts and go ahead and put those onto the studs and then tighten them down and torque them to the correct specs for your application. That should do it for the review on the trailer idler hub assembly for 3500-pound axles with the 5-on-4-3/4 inch bolt pattern.

Customer Reviews

Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 - Pre-Greased - AKIHUB-5475-35-K

Average Customer Rating:  5.0 out of 5 stars   (17 Customer Reviews)

Hub is designed for use on trailer idler axles. Fits 3,500-lb axles with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, and lug nuts included.

- AKIHUB-5475-35-K

my bearing went out on my trailer and ruined my hub . I have an older trailer I got a great deal on. my hub is a 5 on 4 3/4 which is hard to find in stores. but they could order it. for a price to high would take to long. and the guy I talked to just didn't. seem enthused to do it. he never did call me back. but through my own research i found trailer and I am completely satisfied. great product and easy to install. and the price awesome. cheaper than anyone. you will be getting my business from now on. In including some pics. 324168

- AKIHUB-5475-35-K

They worked great 809397

- AKIHUB-5475-35-K

Perfect fit, easy installation. 785398

- AKIHUB-5475-35-K


- AKIHUB-5475-35-K

Part is heavy duty and comes with all parts to replace old hub. 695301

- AKIHUB-5475-35-K

Great service! Thank you for helping me with ordering the right hub assembly and getting the part to me so fast. I ordered a 5 bolt on 4 3/4 spacing. I couldn't find this part anywhere. The part worked great. 660849

- AKIHUB-5475-35-K

The hub assembly I purchased from etrailer was a perfect fit for my trailer. It has functioned and held up well on the trailer. There have been no problems. Will purchase products again from etrailer. 621976

It has been a year now since I purchased the hub assembly. I have logged over 1,000 loaded miles. I have not had any problems. Good product at reasonable price.
Pat A - 04/12/2020


- AKIHUB-5475-35-K

Excellent experience!! 577613

- AKIHUB-5475-35-K

great parts-great price- great service- the parts are always exactly what I need. 552257

- AKIHUB-5475-35-K

Just plain nice 458644

- AKIHUB-5475-35-K

They work. 458025

- AKIHUB-5475-35-K

Right parts at the right price delivered fast............ 453892

- AKIHUB-5475-35-K

Everything fit good and has worked great. Ordering was easy and shipping was fast. I will order from etrailer.com again. 421957

- AKIHUB-5475-35-K

Fast delivery, Great product, Easy inst illation. 342338

John L - 02/16/2018


- AKIHUB-5475-35-K

Quick shipping and excellent communicat ion. 306430

- AKIHUB-5475-35-K

parts fit great and just what I wanted 303343

- AKIHUB-5475-35-K

I recently ordered two idler hubs a rim and tire to repair an older trailer I'm trying to make road worthy again. The hubs were for a #3500 Lb Dexter axle. I went with the cheaper hubs and while they are most likely imported the hubs were machined well and fit with no issues. the E-Trailer website was easy to use and really helpful when I was trying to determine what type of bolt pattern I had. Thanks! 292442

I havent used the trailer much, but I havent had any issues with any of the products I purchased.
Jeff J - 10/26/2017


Ask the Experts about this etrailer Trailer Hubs and Drums

  • Locating Replacement Hubs that Use Same Inner and Outer Bearing
    In order to locate the correct replacement hub assembly for your trailer, you will want to determine what bearing numbers are used on your existing hubs. These numbers should be stamped right inside the bearings themselves. If you cannot locate these numbers, you can also take a few measurements along the spindle using the attached image as a template. You did mention that the inner and outer bearings on your trailer are the same size, but you will still want to determine their specific...
    view full answer...
  • Bolt Pattern Referred To In Hub and Wheel Fit
    Good question. The 5 on 4-3/4 inch and other numbers in that format refer to the location of the lug bolts that the trailer wheels need to match for fit. The stud length has nothing to do with that bolt pattern number nor the diameter of the lug bolt. I've attached an article to help further.
    view full answer...
  • Hub Recommendaiton for Trailer with 5 on 4-3/4 inch Bolt Pattern
    We do have hubs that have the 5 on 4-3/4 inch bolt pattern you mentioned for a 3,500 lb trailer axle like the etrailer.com hub part # AKIHUB-5475-35-K. You'd need to verify that you axles are 3,500 lb axles though to know if this hub will fit. Typically the capacity is listed on the axle or on the VIN plate up near the coupler.
    view full answer...
  • Recommended Hubs and Axle for 1984 Skipper Boat Trailer with 5 on 4-3/4 Inch Bolt Pattern
    Based on your bolt pattern, you will want the Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 # AKIHUB-5475-35-K. Then for your axles, you will want the Timbren Axle-Less Trailer Suspension System - Straight Spindle Only - 3,500 lbs # ASR3500S05. This will replace your leaf springs and thru-axle. You will simply need to add a 2 inch square tube to the integrated holes of the assemblies cut to the custom length for the width of your trailer. I've attached videos to assist....
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Installed by:
Jeff D
Installed by:
David F
Expert Research:
Jameson C
Video by:
Dustin K
Written by:
Alexander C

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