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  1. Trailer Spindles
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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
Our Price: $64.07
Trailer Spindles
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Shipping Weight: 6 lbs
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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 or call 1-800-496-5010 for expert service.
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  • Reviews (8)
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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 Satisfaction Score:

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (8 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.


well made good price


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


Thanks a bunch. Good service.


I really appreciate the service you pro vided






See what our Experts say about this TruRyde Trailer Spindles

  • 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...
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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,...
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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
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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 Flange...
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  • 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 surfaces...
    view full answer...
  • Replacement Spindles For 3,500LB Trailer Axle With Tapered Spindle with 1-1/16" & 1-3/8" Bearing ID
    We do have the following replacement spindles that will fit on your axle. #84 Spindle for 3,500-lb Trailer Axles - 2" Diameter # TRU24FR #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter # TRU84FR #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter # TRU64FR #84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter # TRU74FR
    view full answer...
  • Which Trailer Spindles Fit Trailer Hub Assembly # 84555UC1
    I have three options that will fit Trailer Hub Assembly # 84555UC1, for 3,500 lbs. Part # TRU64FR is a standard 1-3/4-inch round spindle that measures 8-1/4" in overall length. Part # TRU84FR is a standard 1-3/4-inch round spindle that measures 11-1/4" in overall length. Part # TRU74FR is an EZ lube 1-3/4-inch round spindle with a grease zerk that allows you to pump grease internally into the spindle. It also contains a brake mounting flange. It measures 9" in overall length. Installing...
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  • 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...
  • 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...
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  • 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...
    view full answer...
  • Is Dexter Trailer Hub 84545UC1-EZ Compatible with Spindle # TRU74FR
    Yes, trailer hub # 84545UC1-EZ is a fit for spindle # TRU84FR. This is a number 84 spindle that takes the same bearings and seals that are included with the hub. However, the hub is an EZ lube hub and the spindle is not. For a compatible EZ lube spindle use # TRU74FR. This spindle also has a brake mounting flange.
    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 (8-1/4"...
    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 be...
    view full answer...
    Image 1 for
  • Will Trailer Hub Assembly # 845475UC1 Fit TruRyde #84 Trailer Spindle # TRU84FR
    The inner/outer bearings and grease seal dimensions match so yes, the Trailer Hub Assembly, # 845475UC1, will fit the TruRyde #84 Trailer Spindle, # TRU84FR.
    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 uses,...
    view full answer...
  • 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...
    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...
  • What is the Correct Spindle for use With Kodiak Hub-and-Rotor Assembly KHR10
    You will need to use a spindle that fits the bearing set in the Kodiak Hub-and-Rotor Assembly KHR10. This hub uses inner bearing # L68149 and outer bearing # L44649. The spindle that fits this bearing set is part # TRU84FR from TruRyde. This includes the spindle, washer, castle nut and cotter pin.
    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 leading...
    view full answer...
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  • Distance From End of TruRyde #84 Spindle Stub to the Back of an Installed Hub
    When installing a hub like the # AKIHUB-545-35-K on the # TRU84FR the hub is going to stop where the grease seal sits. If you look at the attached picture below, you will see the measurement marked F which is 6-1/2". This would be the stub length, which is the same as the distance from the end to the back of the hub. If you are talking about the other end, the distance would be the overall spindle length of 11-1/4" minus F, which would be 4-3/4".
    view full answer...
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  • Replacement Hub And Spindle For TieDown 3,500-lb Axles
    I spoke with Dexter Marine of Georgia, who bought the running gear portion of TieDown (axles, actuators, brakes, brake lines, spindles, leaf springs and hubs), and they mentioned that you can use a Easy Grease Trailer Idler Hub Assembly for 3.5K Axles # AKIHUB-545-35-G-EZ-K for replacement hubs, and you can use these #84 spindles, depending on the length of the spindle needed: -For a #84 spindle, with 8-1/4" overall length, you can use # TRU64FR. -For a #84 spindle, with 9" overall length,...
    view full answer...
  • 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...
  • 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 # e43SR is a complete...
    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 Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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