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Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5

Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5

Item # AKIHUB-550-35-K
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Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5 1/2 Inch Stud AKIHUB-550-35-K
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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 5 part number AKIHUB-550-35-K can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (38)
  • Q & A (19)
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etrailer by AxleTek Trailer Hubs and Drums - AKIHUB-550-35-K

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

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
  • QAI and CSA certified


  • Application: 3,500-lb trailer axles with #84 spindles
    • Compatible with standard axles from most manufacturers, including Dexter, Lippert (LCI), and AL-KO
  • Wheel size: 14" to 17-1/2"
  • Bolt pattern: 5 on 5"
  • 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"

H-550-07 AxleTek Trailer Idler Hub Assembly for 3.5K Axle with Hardware - 5 on 5

Compare to Dexter 84550BX

Video of Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5

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-550-35-K Review

Today we're going to take a look at the trailer idler hub assembly for 3500 pound axle with the five on five inch bolt pattern. Now this trailer idler hub assembler includes everything shown here. It includes the races which are pre-installed in the front and the rear. It includes the bearings, both inner and outer, the grease seal, the grease cap and the lug nuts. Again, the application for this is 3500 pound axles. The bolt pattern is a five on five inch bolt pattern. Now the inner bearing, which is the larger, has an inner diameter of 1.378 and that would go on the inside, you can see right into that race right there.

Now the outer bearing has an inside diameter of 1.063 and that goes on the outside right into that race just like that. Now the grease seal has an overall diameter of 2.565 and that goes onto the back after you get your bearing put into your race, then you put your grease seal in just like that. The grease cap right here has a flanged diameter of 1.988 and that goes on the front once you have your outer bearing in there, and then you tap the grease cap on over that. Then it comes with the five lug nuts which are 1/2 inch by 20 size and they're designed to go on here to hold your wheel and tire on once your hub's installed and you go to put your wheel and tire on there. You put it on there and then just use your lug nuts and tighten them down and torque them to specs and you're all ready to go. That should do it for the review of the trailer idler hub assembly for 3500 pound axle with the five on five inch bolt pattern.

Customer Reviews

Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5 - AKIHUB-550-35-K

Average Customer Rating:  4.9 out of 5 stars   (38 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-550-35-K

Great experience 653931

- AKIHUB-550-35-K

I Used the hub bearing assembly on my 16ft trailer. It was easy to install and have had no problems to date. I use my trailer 3-4 time a month 595092

- AKIHUB-550-35-K

Received 5 on 5 hub today and it fit perfectly. I first ordered a 5 on 4 3/4 hub and it was wrong. I had measured the bolt pattern across the hub from center to center stud for 3500 lb axle. That is the way we did it back in the day 30 years ago. Well after talking to Jamie at etrailer she explained I was wrong and had me measure stud to stud beside each other also and explained I needed 5 0n 5.She was very professional and very detailed and had me measure several times to make sure I received the right hub. Well she was right and it fit perfect. I will be buying all my trailer parts from etrailer from here on. Jamie your the the best. Its hard to find people who care or even try to help with anything anymore but Jamie acted like she had all day to help me. Thanks again 521070

- AKIHUB-550-35-K

Perfect fit for my 5x12 trailer! The ordering and shipping process was great. Preston was great in matching my old hubs to the new ones. This was my first hub replacement job and I was done in an hour. Will be a repeat customer!!!! 598687

- AKIHUB-550-35-K

The part, (5 on 5" hubs), worked perfectly, and were priced well and delivered on time. The only down side to my order is that we first accidentally ordered a complete axle assembly, hub-to-hub with 5 on 4.5" bolt pattern instead of the aforementioned 5 on 5". We called to get the right hubs sent and thought we could return the unused 5 on 4.5" hubs. Since we packed the bearings and mounted the hubs on the axle, we were told they were now used and could not be returned. They had not made one revolution on the spindle or borne any weight/load. I now have two small boat anchors. I'm very disappointed that we could not clean all the parts and return them. All of this occurred while stranded 250 miles from home while towing a tractor on our flatbed trailer. The new axle and hubs were installed while parked on a gravel road and we're traveling home as I write this. Again, the parts are working well, but the customer service part of the deal could have been better by allowing a return of the hubs we could not use. 400429

- AKIHUB-550-35-K

Finally found the right part at etrailer!! Thank you! This hub isn't common at the parts stores and I couldn't find it locally. Comes with everything you need. You'll have to grease the bearings yourself so have some packing grease handy. I'd share pics but I already fixed the trailer and put it back outside in the cold :) Oh, and the part came a day earlier than I expected. Thanks for that too! 736738

- AKIHUB-550-35-K

Always a blessing to do business with! 729056

- AKIHUB-550-35-K

Good products fast shipping!! 727284

- AKIHUB-550-35-K

Good product and great price 719918

- AKIHUB-550-35-K

As always, my order was exactly what I needed for a long trip to ensure a problem free trip. The quality is good. 683482

- AKIHUB-550-35-K

Order process was seamless. Product was shipped right away and arrived on time. Product was replacement hubs for my trailer which were good quality and an exact fit. Would highly recommend etrailer to anyone! 645101

- AKIHUB-550-35-K

Product is great quality. Spindle is well made and perfect for making the spare tire carrier. “Bridget” in customer service was outstanding! 638998

- AKIHUB-550-35-K

Hub fit perfectly and came with light nuts also. I wasn't expecting that. Shipping speed and price were fantastic 612059

- AKIHUB-550-35-K

Could have included the castle nut and washer but cant be at the deal or the ease of ordering. 584638

- AKIHUB-550-35-K

Great product! Was able to repair my utility trailer at a reasonable price. 581393

- AKIHUB-550-35-K

Excellent service and hub works fine 580057

They are fine. Thanks for asking
Jere - 11/07/2019


- AKIHUB-550-35-K

I wouldn’t buy trailer parts from anyone else great customer service And great prices 579933

- AKIHUB-550-35-K

Ended up having to replace axle after ordering hub and spindle. Excellent order help, fast customer service. Everyone sells parts. It's the other elements of service that count. etrailer worked like that for me. 579018

- AKIHUB-550-35-K

fast. I did not think it could have been shipped so fast, fantastic. price and shipping. I will buy from you again--no problem here---thank you 570430

- AKIHUB-550-35-K

Great product, great price. 559891

- AKIHUB-550-35-K

Very impressed with quality of all pieces and proper assembly. Saved tremendous amount of time = money. 548821

- AKIHUB-550-35-K

Arrived in two days ground. Super easy to install. Took more time packing the bearings by hand than all the rest of the job. I had to replaced the other side because the bearings went out. Wasn't sure which hub I ordered. Called etrailer and the lady was very helpful and was able to look up my last order and confirm the hub I ordered. Great service. 547607

- AKIHUB-550-35-K

fast service. fast delivery. thank you 501335

- AKIHUB-550-35-K


- AKIHUB-550-35-K

My trailer parts seemed to be competitively priced and they were delivered promptly. The website was helpful in finding the right parts and had good information for the installation. I would recommend etrailer to a friend. 461677

Show More Reviews

Ask the Experts about this etrailer Trailer Hubs and Drums

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    The Timbren Axle-Less Trailer Suspension System - Spindle w/Brake Flange # ASR2000S02 does have the ability to incorporate a hub that has a 5 on 5 bolt pattern. If you would like just the hub it is part # AKIHUB-550-35-K and if you would like to have brakes you will need the Hub and Drum # AKHD-550-35-EZ-K, Right Hand (passenger's side) Brake Assembly # 23-48, and Left Hand (driver's side) Brake Assembly # 23-47. With that being said, we highly recommend using trailer tires on a trailer...
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  • Replacement Hubs With 5 on 5 Bolt Pattern
    We do have hubs available with a 5 on 5 bolt pattern; they are each compatible with 3,500 lb axles, have inner bearing # L68149 and outer bearing # L44649 and fit wheels that are between 13 inches and 15 inches. You need to take apart your old hub in order to find out if you have the same bearing numbers. If so hub and drum assembly # AKHD-550-35-K will work; for an idler hub assembly # AKIHUB-550-35-K would be the right choice. I've added a link to video reviews of these parts for you...
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  • Can I Use Hubs with 3500-lb Capacity on Axle with 1750-lb Capacity If The Bearings Match Up?
    First things first; you can determine the specs on your current axle by checking for a sticker or plate attached to the axle itself (you'll usually find it close to the center of the axle). But with that being said, in the event that you can't find anything on the axle itself that would specify the capacity, you'll want to use the bolt pattern on your hubs and the bearings to provide you with a matching hub for your axle and spindle. I'll also say that the L68149 and L44649 are two of the...
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  • Trailer Axle Compatibility with 5 on 5 Inch Hubs for Trailer Upgrade
    For your trailer you will actually need to change out your axles. The spindles you mentioned are not compatible with any of the 5 on 5 inch hubs. All of the options for the 5 on 5 inch hub assemblies are for 3,500 lb axles with # L68149 inner bearings and # L44649 outer bearing. I've linked the page to all your options to assist. Then I've linked the page to all your axles that are compatible and you will want to determine the hub to hub dimension required as well as your spring...
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  • What Spindle Will Etrailer.com Trailer Idler Hub Assembly # AKIHUB-550-35-K Fit
    The Trailer Idler Hub Assembly for 3,500 Pound Axles - 5 on 5 # AKIHUB-550-35-K referenced in your question are compatible with 3,500 pound axles with #84 spindles like the Redline # R20384EZ. I have attached an image showing the dimensions of this spindle for your review. This hub assembly includes the L68111 inner race and L44610 outer race as well as the inner bearing L68149 and outer bearing L44649.
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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Installed by:
Jeff D
Updated by:
Sarah W
Updated by:
Alexander C

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