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#84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter

#84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter

Item # TRU84FR
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Replacement #84 spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Castle nut, washer, and cotter pin included. Lowest Prices for the best trailer spindles from TruRyde. #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter part number TRU84FR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (3)
  • Q & A (36)
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  • Why etrailer?

TruRyde Trailer Spindles - TRU84FR

  • For 3500 lb Axle
  • Standard Spindle
  • 1-3/4 Inch Diameter
  • Round
  • TruRyde

Replacement #84 spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Castle nut, washer, and cotter pin included.


  • Tapered spindle replaces a worn or damaged #84 spindle on your trailer
    • Can also be used to build a custom axle
  • Weld-on installation
  • Sturdy steel construction
  • Castle nut, washer, and cotter pin included


  • Application: 3,500-lb trailer axles
  • Spindle capacity: 1,750 lbs
  • Stub dimensions: 1-3/4" diameter x 6-1/2" long
  • Overall spindle length: 11-1/4"

Bearing, Race, and Seal Information

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

spindle diagram

Part NumberCapacityABCDEFRound/Square
TRU84FR1,750 lbs1.75"1.719"1.378"1.063"1.00"6.50"Round

SP-17584NWC-1125 TruRyde (TRP) Replacement #84 Spindle for 3.5K Axles - 1.75" Diameter x 11.25" OAL

Replaces R2061-284

Customer Reviews

#84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter - TRU84FR

Average Customer Rating:  5.0 out of 5 stars   (3 Customer Reviews)

Replacement #84 spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Castle nut, washer, and cotter pin included.


Very well satisfied with these spindles and hubs. Much nicer than the ones being replaced . excellent service and all parts were a perfect fit. Robert


I really appreciate the service you pro vided



Ask the Experts about this TruRyde Trailer Spindles

  • Do I Need to Replace #84 Spindle With Rust On Surface and What Bearing Kit Do I Need
    You should still be able to use your spindle without having to replace anything, especially because this is not in the seating areas for the bearings. Regardless, I recommend cleaning off the spindle with emery cloth to try to remove as much of the rust as possible. You'll want to take care to make sure that there is no pitting on the spindle that might damage the new bearings, which would be the only case that I recommend replacing the spindles. If you do end up needing to replace your...
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  • Material Used and Tensile Strength of TruRyde Spindle # TRU84FR
    According to TruRyde, the bar stock material used on spindles like # TRU84FR is SAE 1045 hot rolled. This allows the spindle to harden to an extent, but it is a medium tensile steel with a tensile strength of 570-700 MPa and Brinell hardness ranging between 170 and 210. The spindle is designed to retain a slight amount of flex to retain its durability when a trailer goes over a bump or through a hole in the road. TruRyde Spindle # TRU84FR is rated for use on 3,500 lb axles.
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  • Replacement Axle for a 1991 Lowe Boat Trailer
    None of the spindles we carry have the same measurements as what you have. The only real recommendation I could make would be to replace the axle since by the time you buy the spindles, have them professionally installed and get the correct hubs you're almost at the same price as just getting a new axle. In order to recommend an axle assembly for you, I'll need some more information. First, you will need to ensure that the existing wheels and tires you are using are rated for the extra...
    view full answer...
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  • Spindle Replacement Recommendation For Donahue Horse Trailer
    In order to make sure you get the right components for your Donahue Horse Trailer, we will need some more information. If you are wanting to replace the spindle, the first thing you will need to know is the weight capacity and dimensions of the axle you plan on using the spindle on. Please keep in mind that installing the spindle require welding it to the axle by a certified welder. They use special jigs so that it is concentric and square on the axle or it can cause problems with uneven...
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  • 6-Lug Hub to Fit Spindle for 3,500 Pound Axle
    The # TRU84FR spindle is rated for 3,500 pounds and uses bearings # L68149 and # L44649. We have some 6-lug hubs that fit but they aren't 6 on 6 they're 6 on 5-1/2 like part # AKHD-655-35-EZ-K. We only carry two hubs with a 6 on 6 pattern and neither of them fit that spindle; parts # 42660UC1 and # AH30660FCOMP.
    view full answer...
  • Finding the Correct Spindle Size for Hub
    From what I could find about your hub, you need the #84 spindle like # TRU84FR which is a round spindle. A more accurate way to figure out the needed spindle size is to first find out the measurements of your bearings. You can also measure the spindles on your damaged axle and match them to the inner diameter of the bearings that fit a #84 spindle. The matching bearing kit is Bearing Kit for #84 Spindle # BK2-100. This matches L44649/L68149 Bearings which is what I believe your hub...
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  • Longest Replacement Trailer Spindle with 6 Lug Hub
    The longest spindle we have is the part # TRU84FR which is 11-1/4 inches long overall. So for 6 lug hubs that would fit this you'd want the part # 84656UC3-EZ for a hub drum or part # AKIHUB-655-35-EZ-K for an idler hub.
    view full answer...
  • Parts Needed to Add Electric Drum Brakes to a 2003 Haulmark Trailer
    The first thing you are going to want to check is if the trailer axle has brake mounting flanges to attach brake assemblies to. A brake mounting flange will look like # 4-44-1 or # 4-34. If the trailer does NOT have these they will have to be welded on by a qualified professional with experience with installing flanges. It requires a special jig because the flanges have to be perfectly straight and concentric. You will also need the brake assemblies like you said, hub/drum assemblies,...
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  • How to Grease Trailer Bearings and Spindle without EZ Lube Axle and Spindle
    If you don't have an EZ-Lube spindle on your axle then you'll need to remove the hub, remove and repack the bearings, races and seals manually. Standard trailer bearings should be re-packed and greased every 10,000 to 12,000 miles in normal towing conditions; if you're routinely towing at maximum load or live in an extremely warm and dry area it might be less than that. This will be the only way to properly grease the bearings and spindle to perform this routine maintenance. If you don't...
    view full answer...
  • Replacement Spindle and Hub for my Lippert 3500# Axle
    The #84 Spindle for 3,500-lb Trailer Axles part # TRU84FR and the Trailer Idler Hub Assembly for 3,500-lb Axles part # AKIHUB-550-35-K for a 5 on 5" wheel bolt pattern or the Trailer Idler Hub Assembly for 3,500-lb Axles part # AKIHUB-545-35-K for a 5 on 4.5" bolt pattern will have you set up and ready to go.
    view full answer...
  • Mounting Bolt Pattern of 10 Inch Electric Drum Brake Assemblies
    The Electric Trailer Brake Kit - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35 has a mounting pattern that is typical for 3,500 lb axles. The center on center horizontal measurement of the mounting bolts are 2-7/8 inches and diagonal center on center of 4 inches. You can see this with the mounting flange # 4-35. I can't confirm the fit of the hubs on your trailer without knowing if the spindles on the axles are the standard length or not. The standard spindle length...
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  • Welding #84 Spindles # TRU84FR and # TRU57FR for Utility Trailer with 2-3/8 inch O.D. Pipe
    You have a 2-3/8 inch O.D. pipe so you might want to look at #84 Spindle, # TRU84FR, which has a 2 inch O.D. at the weld point and has a 1750 lb. capacity, so two spindles will give that axle 3,500 lb capacity. The #42 Spindle, TRU57FR which has a 2.25 inch O.D. at the weld point and is rated for 5,200 lbs to 7,000 lbs axles. The total capacities of the spindles are only valid if installed correctly and the axles are not broken or damaged in any way. The TruRyde #84 Spindle, # TRU47FR,...
    view full answer...
  • Replacement Axle Spindle for Dexter P21-SLR with 76 Inch Spring Seats and 44649 and 68149 Bearings
    I reached out to Dexter and they no longer make that axle. I can confirm based on the bearing sizes you gave that you have a 3,500 lb capacity. If you determine you just want to replace the hub, I recommend the Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles - 10" Diameter - 5 on 4-1/2 # 84546UC3 or # 84546UC3-EZ if you have the grease zerk integrated in the spindle. Since we can't match the spring seat to spring seat dimensions if you want to replace your axle I recommend...
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  • Replacement Hub, Bearings, Races, and Seals for Trailer Hub with H-1377 Bearing
    First, it does sound like, based on the measurement and information you have provided, that race # L68110, is correct since its outer diameter is 2.327 inches. This race is associated with bearing # L68149 which has an inner diameter of 1.378 inches and fits a number 84 spindle. On these spindles the diameter where the seal goes is 1.73 inches such as # TRU84FR. The seal should be a tight fit. I once had a heck of a time pulling a hub off of a trailer that was held on by the seal only!...
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  • What Size of Spindle is Needed for a 3,500-Lb Axle
    I have three spindles that are for a 3,500-lb axle and have the bearing dimensions you have listed. The only difference is the dimension for the grease seal is 1.75 inches, not the 1.795 inches that you have mentioned. Maybe you typed in the seal diameter wrong. The hub number you have mentioned is just a casting number, not a part number. The three spindles I have for a 3,500-lb axle are as follows. #84 Spindle - 1-3/4" Diameter (8-1/4" OAL) # TRU64FR #84 E-Z Lube Spindle w/ Brake...
    view full answer...
  • Recommended Tapered Spindles for 3,500 lb Axle
    Given the measurements you provided, there are three spindles we offer for a 3,500-lb axle: #84 Spindle - 1-3/4" Diameter (8-1/4" OAL) 1,750 lbs part # TRU64FR #84 EZ Lube Spindle 1-3/4" Diameter (9" OAL) 1,750 lbs part # TRU74FR #84 Spindle - 1-3/4" Diameter (11-1/4" OAL) 1,750 lbs part # TRU84FR The bearing surfaces of each of the three are the same, with the difference being the overall length of the spindle. I would recommend using a digital caliper and comparing the bearing...
    view full answer...
  • Identifying Nature of Damage to Trailer Spindle
    Thank you for providing the clear photo of your trailer spindle. Based on the picture it appears that the race for the inner bearing is still stuck on the spindle and shows some signs of scoring damage. Perhaps the inner bearing was damaged and the heat created caused the race to become fused to the spindle. I do not recommend trying to repair this spindle. The effort needed to remove that race will likely cause more damage. It will be safer to replace the spindle. Spindles should...
    view full answer...
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  • How to Determine Which Replacement Hubs Will Fit Spindle
    There are a few different ways to make sure that you are getting the correct hub to match your spindle like the wheel bolt pattern, bearings, and weight capacity. You can either use a Digital Caliper # PTW80157 to measure the different sections of your spindle (see attached picture), or you can simply remove your current hub and locate the bearing, race, and seal numbers (on same attached picture). Once you know what the measurements or numbers are you can either filter through our...
    view full answer...
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  • Availability Of 5-5 1/2 Inch Hub Assembly, Spindle, Bearings Rated For 1,750 lbs. Each
    I have the Dexter Trailer Hub Assembly - 3,500 lbs Axles - 5 on 5-1/2, # 84555UC1, which is rated at 1,750 lbs. each. The bearings, races, cap and seal included. The only other option I would have is the Dexter Trailer Hub & Drum Assembly - 3,500 lbs. Axles - 5 on 5-1/2, # 84557UC3, if you were wanting brakes. The capacity is 1,750 lbs. and comes with a 10 inch X 2-1/4 inch drum. It also comes with bearings, races, cap and seal. The spindles that are available for both hub assemblies...
    view full answer...
  • Hub and Spindle Recommendation for the Kenda 215/60-8 Bias Tire with 8 Galvanized Wheel # AM3H325
    For a hub to match the bolt pattern of the # AM3H325 that you referenced you will want an idler hub that has a matching bolt pattern, 5 on 4-1/2 inches. For a hub I would recommend the part # 84545UC1-EZ, and then for a spindle part # TRU84FR.
    view full answer...
  • Replacement Hub For Boat Trailer Using Bearings L68149 And L44649
    The closest we have is Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles - 5 on 4-1/2 - Galvanized # AKIHUB-545-35-G-EZ-K. This uses inner bearing L68149 (1.378" inner diameter) and outer bearing L44649 (1.063" inner diameter) that you currently have. It also has the outer race L44610 that you have. There is not a hub available that has the inner race L68110 that you have which measures 2.327". This kit includes inner race L68111 which measures 2.361". You can stick with your current...
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  • Available Complete Replacement Axle Kits
    Thank you for providing your hub's bearing numbers # 15123 and 09067. We do not have a hub that uses 15123 as inner and 09067 as outer bearings. Your alternatives are to cut off your existing spindles and install spindles like # TRU84FR that would be compatible with a standard hub like # 84545BX; or you could replace the entire axle. I linked our main page for complete trailer axle kits, some of which include hubs or drums and even electric brakes. For instance, part # 35545E-ST-EZ-89...
    view full answer...
  • Replacement Hub for Trailer With Timken 158123 Inner and 09067 Outer Bearing
    I looked through our selection of hubs and hub/drums, and couldn't find anything compatible with the bearings you mentioned. This leaves you with two alternatives. Number one would be to cut off your existing spindles and install spindles like # TRU84FR that would be compatible with a standard hub like # 84545BX. The hub has the same number of lugs and bolt circle as your existing hubs, so you could use the same wheels. Removing the old spindles and welding the new ones into place is...
    view full answer...
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  • Spindles for a Trailer Hub Assembly for 3500 lb Axle
    The following spindles will fit hub 84545BX 1. Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide (8-1/4" OAL) # TRU47FR 2. #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter (8-1/4" OAL) # TRU64FR 3. #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter (11-1/4" OAL) # TRU84FR
    view full answer...
  • Compatibility of Dexter 3500-lb 5-on-5 Trailer Hub # 84550BX with TRU84FR Spindle
    The hub you referenced, Dexter 3500-lb 5-on-5 Trailer Hub # 84550BX, which comes with inner/outer bearings # L68149 and # L44649, is indeed a correct fit for the Number 84 Spindle, part # TRU84FR .
    view full answer...
  • What Spindle Will Work for Trailer Hub Assembly with L68149 Inner and L44649 Outer Bearings
    The Trailer Hub Assembly # 84550BX that you referenced will use # L68149 as the inner bearing and # L44649 as the outer bearing. These are the inner and outer bearings used by a # 84 spindle. We offer the following spindles: #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter (11-1/4" OAL) # TRU84FR [R2061-284] #84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter (9" OAL) # TRU74FR [R20384EZ] #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter...
    view full answer...
  • Adding Electric Drum Brakes To A Tandem Axle Trailer
    Yes, I can point you in the right direction, and we carry a product that will serve as a solution for you. Since the trailer you're looking to modify has never had brakes installed on it before, and since you're running a trailer with tandem 3500 lb. axles and no existing actuator, the best product recommendation is an electric drum brake system that will work with your existing brake controller, without the need to add an actuator or hydraulic lines. The Dexter # 23-468-469 brake assembly...
    view full answer...
  • Hub and Drum Assemblies and Spindles for Dexter Electric Trailer Brakes 23-112
    The brake assembly # 23-112 is rated for 6,000 pound axles, not 3,500 pound axles. For a 3,500 pound axle you will need to look at 10x2-1/4 inch brakes such as # 23-26 for the left side and # 23-27 for the right side. These mount to a 4-bolt flange, such as # 4-34 for 1-3/4 inch round axles, or # 4-35 for 2-3/8 inch round axles. Brake mounting flanges need to be installed by a qualified professional with experience welding on brake flanges because it is a precision job requiring special...
    view full answer...
  • Bearing Buddies and Seals Compatible With # AKHD-655-35-K Hub/Brake Drum for 3500 lb Axle
    We do have Bearing Buddies that would fit the 1.980 inch diameter hub bore used by the # AKHD- 655-35-K hub/drum. I'd recommend the stainless steel version, part # BB1980A-SS. For the Bearing Buddy seals, use # BB60002. Unfortunately, the # AKHD-655-35-K is a pre-packaged kit, we can't substitute any parts. The #TRU84FR spindle is compatible with the L44649 and L681449 bearings used by the hub/drum you're interested in, so it could be fabricated into a spare tire mount. I've linked...
    view full answer...
  • Recommendation of Trailer Hub and Drums and Axles
    The trailer hub and drum assembly # 845476UC3 includes bearings and races from Redline. They are made in China. I would assume you have 5 on 4-3/4 inch bolt pattern but you will need to replace the spindle. Welding on a new spindle is a precision trade craft requiring a special jig installed by an experienced professional. Otherwise, you could continue having the same problem. Depending on the overall length and if you currently have a round or square, that will determine which spindle...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Kathleen M
Installed by:
Kathleen M
Employee Alexander C
Written by:
Alexander C

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