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Dexter Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2

Dexter Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2

Item # 34822545BX
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Dexter Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2 L44643 34822545BX
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Hub is designed for use on trailer idler axles. Fits 2,000-lb axles with BT8 spindles. Inner bearing (L44643) and race, outer bearing (L44643) and race, grease seal, grease cap, wheel bolts, and lug nuts included. For 8" to 12" wheels. Lowest Prices for the best trailer hubs and drums from Dexter Axle. Dexter Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2 part number 34822545BX can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (15)
  • Q & A (44)
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  • Why etrailer?

Dexter Axle Trailer Hubs and Drums - 34822545BX

  • 5 on 4-1/2 Inch
  • For 2000 lbs Axles
  • Hub
  • Standard
  • 8 Inch Wheel
  • 10 Inch Wheel
  • 12 Inch Wheel
  • Dexter Axle
  • L44643
  • 1/2 Inch Stud
  • L44643

Hub is designed for use on trailer idler axles. Fits 2,000-lb axles with BT8 spindles. Inner bearing (L44643) and race, outer bearing (L44643) and race, grease seal, grease cap, wheel bolts, and lug nuts included. For 8" to 12" wheels.


  • Trailer hub assembly fits idler axles
    • Bearings, races, seal, grease cap, wheel bolts, and lug nuts are included
  • Sturdy iron construction
  • Made in the USA


  • Application: 2,000-lb trailer axles with BT8 spindles
  • Wheel size: 8" to 12"
  • Bolt pattern: 5 on 4-1/2"
  • Grease cap flange diameter: 1.986"
  • Wheel bolt diameter: 1/2"
  • Weight capacity: 1,000 lbs

Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: L44643 (1" inner diameter)
    • Outer bearing: L44643 (1" inner diameter)
  • Races (included)
    • Inner race: L44610
    • Outer race: L44610
  • Grease seal (included): 34823
    • Inner diameter: 1.249"
    • Outer diameter: 1.983"

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"

H34822545BX Dexter Trailer Idler Hub Assembly for 2K Axle with Hardware - 5 on 4-1/2 - L44643 Bearings

Customer Reviews

Dexter Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2 - 34822545BX

Average Customer Rating:  4.9 out of 5 stars   (15 Customer Reviews)

Hub is designed for use on trailer idler axles. Fits 2,000-lb axles with BT8 spindles. Inner bearing (L44643) and race, outer bearing (L44643) and race, grease seal, grease cap, wheel bolts, and lug nuts included. For 8" to 12" wheels.

- 34822545BX

I initially ordered a pair of hubs from another online retailer That I has used prior and whom had mine "in stock". They didn't. After 5 days of no shipping info, they notified me they were back ordered. I cancelled the order. I ordered a pair of these hubs from etrailer.com on 6/2, George notified me on 6/3 that they shipped and I received them on 6/6. That's customer service. Price, availability and delivery. Every online retailer should strive for this level of attention.. 809285

- 34822545BX

Great job thanks. 784720

- 34822545BX

these are great hubs. my trailer had tiny 4 bolt hubs and wheels and these fit perfect on the 1" spindles and allowed me to run a much taller tire. even comes pregreased with plenty of grease 774628

- 34822545BX

Shipping was fast and install was easy...your measurement guide was very helpful to figure out my spindle size and lug stud spacing for my wheel. Thanks 664833

- 34822545BX

good product 261728

- 34822545BX

I have ordered from e-trailer twice. Both times they provide excellent service! Parts arrived amazingly fast!! One order had a damaged part, I called and got a very nice sales rep. Parts were replaced FREE. I will deffinatly order from them again. I ordered hubs, wheel and tires, and light kit for my boat trailer. All parts are good Quality. 203452

- 34822545BX

fit perfect, great website I easily found what I needed, seems well made, the outside dust cover was hard to install (I had to fiddle with it) 198291

- 34822545BX

Just what I was looking for. 179589

- 34822545BX

nice product, went on super-easy 173167

- 34822545BX

absolutely the best customer service ( George) and the fastest transit times - have been using them for years - never a problem 170954

- 34822545BX

Not only is the product exactly what we needed (the dust caps are a little on the lightweight side) but Matthew was extremely helpful in getting me the parts I needed to fix my trailer! 135445

- 34822545BX

Hubs went on without any trouble. Only tricky part was to get the caps seated into the hub to trap the grease. Haven't used the trailer yet, but don't anticipate any problems. Shipping was awesome. I ordered with standard shipping and the box was on my porch the next afternoon. 131003

- 34822545BX

The hub I ordered for my trailer worked perfectly!!!!!! The customer service is unreal, from fast shipping to constant checks(personal emails) to see if item had arrvied on time, truly a professional company that puts their customers above all. I never write reviews put this company definetly earned it, Thanks and I will be back!!! 103272

- 34822545BX

Nice assembly 48886

- 34822545BX

good looking hub. Races are already installed so that was nice. 29305


Ask the Experts about this Dexter Axle Trailer Hubs and Drums

  • Inspecting Trailer Spindle and Locating Replacement Bearings for Used Trailer
    The small cut that you noticed when inspecting the spindle on your trailer can cause bearings and seals to wear out very quickly (even extremely small ones). A quick test to see if a replacement spindle is in order is to simply run your fingernail across the spindle. If it catches as you run along the mentioned cut/nick, replacing the spindle will be your best option. I am not aware of a bearing that features an inner diameter of 1.125 inches like what you mentioned. With that being...
    view full answer...
  • Idler Hub Assembly for 2,000 lb Axle With 13 Inch Wheels
    We do have a solution for you, although the Dexter Trailer Idler Hub Assembly for 2,000-lb Axles # 34822545BX does require wheels be only 8" to 12". The reason for that is there is this hub does not have a large enough flange diameter in order to to provide the necessary side-to-side support for a larger 13" wheel, so it can become loose on the hub. Instead, the hub you need for your 13" wheel is the Dexter Trailer Idler Hub Assembly for 2,000-lb Axles # 8-258BTUC1. This uses the...
    view full answer...
  • Replacement Bearing Kit and Bearing Buddy Grease Caps for 2012 Triton LT Trailer with Reliable Axle
    The owner's manual for the Reliable axle on your Triton PWC trailer indicates that the bearing used on the axle of your weight rating is # L44643. This part serves as both inner and outer bearing according to the manual, which I linked for you. We sell this bearing as an individual part and also as part of a complete bearing kit # BK1-100 which includes 2 of bearing # L44643, 2 of race # L44610, 1 grease seal # 34823 and a cotter pin. You'll need two kits per axle. The hub that uses...
    view full answer...
  • Pregreased Idler Hub Assembly for 2000 lb EZ Lube Axles
    The Dexter Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2 # 34822545BX which is a fit for 8 inch to 12 inch wheels. The Trailer Idler Hub Assembly - 2K E-Z Lube Axle - 13" to 15" Wheel - 5 on 4-1/2 - PreGreased # AKIHUB-545-2-LFEZ-1K is very similar using the same bearings but is a fit for 13 to 15 inch wheels which is a better fit for your 14 inch wheels with the larger flange diameter. I see you already received the other parts so you simply need to order the new part...
    view full answer...
  • How To Measure For Replacement Bearing Kit on 2013 Triton LT PWC Trailer
    I did some research on the Triton website but was not able to find the particular bearing kit that you need for your trailer. I recommend pull the hub and check the numbers on the bearings. If you let me know the numbers on the bearings I can recommend a bearing kit for you. If you are not able to pull the hub you can also measure the spindle with a digital caliper like part # PTW80157. I have attached a photo of the spots on the spindle to measure to get the correct bearings. If you...
    view full answer...
  • How to Determine Replacement Hub for Harbor Freight Trailer
    It is likely that the Dexter Trailer Idler Hub Assembly # 34822545BX for 2K trailer axles will fit but you need to verify that your trailer uses # L44643 inner and outer bearings, and that your current grease seal has a 1.249" inner diameter. You can verify this by removing your current hubs and locating the bearing part numbers or by using a digital caliper like part # 301-17068 and measuring your spindle to the 3rd decimal (1.234 for example). Your spindle needs to measure 1" where...
    view full answer...
  • How to Pick Out Hubs for a 1979 Jayco Popup Camper
    In order to pick out the correct hub assembly for a trailer you are going to need know a few key pieces of information. The first thing you will need to know is the bolt pattern of your hubs, since you are looking for 5 on 4-1/2 inch bolt pattern this is covered. Next thing you will need to know is what spindle you have on your trailer. In order to do that you can either get the inner and outer bearing numbers from a hub or use a dial caliper to get exact measurements of the spindle....
    view full answer...
  • What Limits the Speed of a Trailer
    What limits the speed a trailer can go is the tires. Trailer tires are only rated to go 65 miles per hour. If you are traveling fast enough that bearings in good condition begin to damage themselves the trailer tires are probably already in the process of failing. Trailer tires are built with a thicker sidewall, to handle vertical loads, that get hot enough to fail when you exceed 65 miles per hour. Going to a larger diameter wheel/tire will not give you the ability to exceed the...
    view full answer...
  • Picking Out Replacement Trailer Hub for 2006 Karavan 1250
    If you can confirm that your trailer has 2,000 lb axles yes, the # 34822545BX is the correct replacement hub. We don't have a way to look that up so you'd want to check your axles for a tag that lists capacity or the VIN plate will have that as well. Based on your weight being 1,250 lbs I'd be surprised if this wasn't the correct fit though. Or if you pull off your old hub and measure the spindle where the bearings ride and find that it's 1 inch in diameter there that would confirm...
    view full answer...
  • Hub Recommendations to fit a BTR Spindle with 1.06 C and D Dimensions
    Based on the C and D dimensions you listed you have a BTR spindle. The correct idler hub with a 5 on 4-1/2 inch bolt pattern that you would need would be the Trailer Hub Assembly # 8-259-5UC1-EZ. If you needed a hub and drum assembly for your spindle you would need the Trailer Hub and Drum Assembly # 8-257-5UC3. The # 34822545BX would not work on your spindle dimensions.
    view full answer...
  • Spindle Nut Torque For Installing Trailer Hub that Won't Cause Hub to Heat Up
    The spindle nut that holds on a trailer hub needs to be just tight enough that it seats the bearings and everything is held in place but not tight enough to create friction and heat like you are experiencing. When our installers replace a trailer hub, there isn't a set torque spec used when tightening the spindle nut. The hub is placed on the spindle, making sure the inner and outer bearings are correctly seated. The spindle nut is then run down until you start feeling resistance. At...
    view full answer...
  • Dimensions Of Dexter Hub Assembly For 8 to 12 Inch Wheels
    The Dexter Hub Assembly, part # 34822545BX is designed to be used with 2,000 lb axles and for 8 inch to 12 inch wheels. This assembly includes bearings, races, seal, grease cap, wheel bolts and lug nuts. I have attached a photo of the hub and have the hub length noted on the photo. The length of the hub is 4-1/4 inches and the inner diameter of the inner and outer bearings, part # L44643, that are included with the hub measure 1 inch. A spindle that is designed to work with the...
    view full answer...
  • How to Determine The Correct Replacement Trailer Hubs by Bearing Numbers or Spindle Size
    The best way to determine which replacement hubs you need for your trailer would be to remove one of the hubs and retrieve the bearings. Find the numbers stamped into the bearings and with those we will be able to get you the correct hubs. If you are unable to retrieve the bearing numbers, you can take measurements of the spindle. I have included a link to our spindle main page. At the top of the page is a diagram showing all of the measurements we would need to find the correct hubs...
    view full answer...
  • Replacement Hub and Axle for 2007 Triton LT Trailer
    For your replacement axle and hubs, I recommend the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Regular Tires - 2,000 lbs # A20RS545 or the 4 on 4 inch hubs of the # A20RS440. These replacements contain Aeon rubber suspension and have EZ Lube spindles for easy maintenance. They do require a 2 inch square tube (not included) to join the assemblies utilizing the integrated holes. This would be a great upgrade for you. If you just want to replace the hubs,...
    view full answer...
  • Which Bearing Buddies Fit Trailer Hub # 34822545BX
    You will need Bearing Buddies that fit a 1.98 diameter hub bore. We have several models. For stainless steel use # BB1980A-SS. For chrome plated use # BB1980A. And, if the hub is threaded, use # BB1980T-SS. I also recommend special seals for use with Bearing Buddies, # BB60001, to prevent having a blow out with a regular seal.
    view full answer...
  • Recommended Hub Assemblies, Wheels And Tires For 1993 Jayco Popup Camper
    The hub and bearing kit I recommend for your Jayco popup camper is part # AKIHUB-440-2-2K. This kit includes the idler hubs, bearings, races, seal, grease cap, and lug nuts. The hub has a 4 on 4 bolt pattern. The hub assembly kit you came from will not work with the spindle size you said you have on your trailer. We also have tire/wheel combos that will work with this hub assembly. The combo I recommend is part # AM31208HWT. This is a 12-inch radial tire/wheel combo with an aluminum...
    view full answer...
  • Will the Dexter Trailer Idler Hub Assembly 34822545BX Work with a 14 Inch Diameter Wheel
    If you have 14" wheels on your trailer then you will want to use the Trailer Idler Hub Assembly part # AKIHUB-545-2-LFEZ-1K instead of the Dexter Trailer Idler Hub Assembly part # 34822545BX. The Dexter Trailer Idler Hub Assembly is only rated for use with 8" to 12" wheels whereas the Trailer Idler Hub Assembly is rated for use with 13" to 15" wheels because it has more of a surface area on the hub face. Unfortunately, we don't have any pre-greased hubs that will work for you but greasing...
    view full answer...
  • Troubleshooting Trailer Hub that Gets Warms
    If the bearings are good and the hub is greased properly that basically limits the issue to the brakes. How much drag can you feel as you turn the wheel by hand with the trailer jacked up in the air? It should feel like a light drag and turn easily. Do all hubs get warm or just the one? To see how to manually adjust trailer brake assemblies check out the video I attached, fast-forward to the 4:35 mark of the video. Basically you will adjust the brakes out so that there is a slight but...
    view full answer...
  • Replacement Idler Hubs for Utility Trailer
    Thank you for the photo of your trailer idler hub and for the details about its bearings. New hubs must use the very same bearing set in order to fit on your spindles. All 6-on-5-1/2-inch idler hubs we offer are shown on the linked page. Timken bearing 15118 does indeed have an inner bore of 1.189-inches but we offer no bearing with this same bore dimension. Bearing 09074 has a 0.75-inch inner bore and we offer one bearing with this same inner dimension, part # LM11949, which is commonly...
    view full answer...
  • Trailer Hub Assembly Must be Put Together and Packed with Grease
    The trailer hub assembly, part number, 34822545BX, comes with the race attached to the hub. The seal and bearings are not attached. Those parts must be assembled and packed with grease prior to installing the cap. I have attached a FAQ sheet for wheel bearings and two videos for your review.
    view full answer...
  • Why Would Trailer Hub Get Hot When Leaking Grease/Oil
    If the oil or grease of your hub is leaking out then the heat you have found is related to that. Without proper lubrication the hub is getting hot. If this is a grease hub and you put oil in it then that would be why it would be leaking out. Or you overfilled the hub with grease and in doing so blew out the seal. This is a common problem with people who use Bearing Buddies. Either way you need to replace the seal and repack the hub with grease properly. I attached a video that demonstrates...
    view full answer...
  • Troubleshooting Trailer Hub/Drum that Gets Hot Ater New Bearings and Assembly Adjustment
    If the adjustment and bearings are good you need to go in and check out what the inside of the hub drum looks like as it may have a wear issue that's causing heat to build up. While in there you'd want to check out everything in the brake assemblies too to make sure there's nothing broken or worn out as well.
    view full answer...
  • Troubleshooting Overheating Hubs on a Trailer With New Bearings and Grease
    Hubs will heat up when driving, but if it feels like they are getting too hot, then you will want to look at a few things on your hub. My guess is that the spindle nut is too tight and the added stress on the bearings is overheating the bearings and hub and could be causing damage to the bearings. When you install the castle nut you will want to tighten the spindle nut while turning the hub. When there is a slight bind on the bearing, the parts are seated correctly. Back the nut off...
    view full answer...
  • How to Determine Bearing Dimensions to Select Replacement Trailer Hub
    My bearing cross reference does not include the Bower bearing numbers BT1151 and T09074 so in order to see if we have a hub that uses compatible bearings you'll want to measure your spindles at the points C and D shown in the linked image. These are the points on the spindle where the inner and outer bearings ride. You will need a precision digital caliper, one like # PTW80157 or # 301-17068, so that you can measure precisely to the nearest thousandth of an inch, such as 1.234-inches....
    view full answer...
  • Replacement Hub Recommendation for a Hub that Uses L44610 Outer and L68111 Inner Races
    Actually the numbers you listed are races and not bearings, but nevertheless I was able to determine what you need. Also, it sounds like you meant to type 6 on 5-1/2 inch bolt pattern. For an idler hub you would want the part # 84655UC1-EZ. For a hub and drum you would want the part # 84656UC3-EZ.
    view full answer...
  • Hubs and Wheel Bearings Keep Working Loose Causing Play in the Wheels
    It sounds like the problem you are having is related to one of the possibilities you have mentioned. It is nearly impossible to press a race in straight at home unless you have the proper equipment and have done it before. Taking the drums to a brake shop might be the best option to make sure the races are seated properly. If they are seated properly then it is possible that the hub bore could be off causing the races to get out of position. The solution would be to replace the drums. If...
    view full answer...
  • Should Spindle Be Replaced After Wheel Came Off Weekend Warrior Tri-Axle Trailer
    Now would be a really good time to have the entire system inspected by a qualified shop. If the lug nuts were not tightened properly that could cause the wheel to come off the trailer. The bearing should have been inspected for obvious signs of wear or damage as well as the spindle. If the hub came off with the wheel and tire I imagine the threads on the spindle have been damaged. I would have someone inspect the entire system and replace or repair anything that is worn or damaged....
    view full answer...
  • Recommendation for Replacement 5 Lug Hubs
    It sounds like you are looking to replace your hubs. I have attached a link to our trailer hubs where you can use the filters on the page to choose the bolt pattern of your hub, your wheel size, your axle capacity, and since most of our hubs also include the bearings, you will need to make this selection as well. The easiest way to determine the correct replacement bearings for your trailer is to remove the hub and find the part numbers that will be stamped on the inner and outer bearings....
    view full answer...
  • Which Spindles Will Work with the Trailer Hub Assembly for 2,000 lbs Axles
    You can use any of three spindles with the Trailer Hub Assembly - 2,000 lbs Axles - 5 on 4-1/2, item # 34822545BX. I have listed these spindles below. The main difference in these spindles is the mounting dimensions on the inboard end of the spindles. the bearing seal and threaded portions of the spindles are all the same. Spindle 1.25 inch RD x 4 inch STUB Item, # R104BT8 Spindle 1-1/2 inch Square x 4 inch Long Stub, for 2,000 lb. Trailer Axles, Item # SP204BT8 Spindle 1.38 inch RD...
    view full answer...

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