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  1. Trailer Spindles
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  3. For 3500 lb Axle
  4. Standard Spindle
  5. 1-1/2 Inch Diameter
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Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide
TruRyde

Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide

Part Number: TRU47FR
In Stock
$57.46
Retail:$61.12
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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. Great Prices for the best trailer spindles from TruRyde. Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide part number TRU47FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (29)
  • Q & A (0)
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TruRyde Trailer Spindles - TRU47FR

  • For 3500 lb Axle
  • Standard Spindle
  • 1-1/2 Inch Diameter
  • Square
  • 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.


Features:

  • 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


Specs:

  • Application: 3,500-lb trailer axles
    • Spindle capacity: 1,750 lbs
  • Stub dimensions: 1-1/2" wide x 3-5/8" long
  • Overall spindle length: 8-1/4"


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
TRU47FR1,750 lbs1.50"1.719"1.378"1.063"1.00"3.625"Square




SP-20484-SQNWC TruRyde (TRP) Replacement #84 Square Spindle for 3.5K Axles - 1.50" Wide x 8.25" OAL

Replaces SP20484





Customer Satisfaction Score:


Customer Reviews

Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide - TRU47FR

Average Customer Rating:  4.9 out of 5 stars   (29 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.

by:

Excellent Spindle Stub Assembly that is easy to weld in place. Price beats out the competition. Even here in Canada.

Joe V.

1/8/2024

As advertised and performing well.



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Welded this in place and bolted the spindle up without problem!



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Just had the 3500lb square #84 spindle welded on my axle and then installed hub axle seems to be of very good quality customer service was helpful before I made my order



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the order was just what i needed!



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1 1/2 spindle is the correct product. Once the spindles are,welded into the new axle the axle will be complete and should last for years .



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I will use them for all my trailer needs in the future very help full through my trailer build.

Thanks



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Very pleased



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Items was as described and what I needed for my job.



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Competitive pricing, quality item, fast shipping, Thanks WooooooooooHoooooooo!



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Just what I ordered. Shipped quickly. Arrived quickly



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Great service and products.



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Show More Reviews

See what our Experts say about this TruRyde Trailer Spindles

  • Are #84 Spindles Threaded into the Axle?
    No, they're welded. You assumed correctly. The spindles listed below that I referenced in your previous question all have to be welded on. There are no thread on spindles. #84 Spindle for 3,500-lb Trailer Axles - 2" Diameter item # TRU24FR #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter item # TRU84FR Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide item # TRU47FR
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  • Correct 5-Lug Hub for Square #84 Spindle TRU47FR
    The Trailer Idler Hub Assembly for 3,500-lb Axles part # AKIHUB-545-35-K is what you'll want to use with the Square #84 Spindle part # TRU47FR.
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  • Recommended Hubs, Bearings, Wheels and Tires for Small Tandem Axle Trailer
    To select hubs that will fit your trailer spindles you will need to match the bearing numbers or take very precise measurements using a digital caliper like # PTW80157. The bearings in the new hubs must match the old ones (or the spindle dimensions) in order for them to fit properly on your spindles. The linked image shows you the typical appearance and location of bearing part numbers. If these part numbers are not available measure the spindle at points C and D to get the inner and outer...
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  • Replacement Disc Brake Kit Recommendation for 3,500 lb Axle with #84 Spindles
    Thank you for all of the photos and information! From what I can see it looks like you have a #84 spindle but that inner bearing blew out so you should be able to remove that inner sleeve that looks like it's still on the spindle (next to where the grease seal rides). Try using a hammer and flat head screwdriver to gently tap on that ring to see if it slides off the spindle without damaging anything. If you can get it off and your spindles look clean and don't have any damaged then it's...
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  • Replacement Axle, Hubs, Brakes, and Tires for Older Trailer With Dexter 22834 Hub
    Based on the axle and bearing measurements it looks like your trailer was using a Dexter 22834 hub. The Outer Bearing # 1779 has an ID of .938" and the Inner Bearing # 2788 has an ID of 1.50". The outer bearing is slightly off but that may be due to a measuring error. That would also mean you have 5,200 lb axles on the trailer. This is an obsolete assembly so you will need to replace the entire axle. For a replacement you can use the # e55SR. This will stick out an extra 3/4" on either...
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  • How to Pick Out Replacement Hub for Trailer
    To replace a spindle, the old one would need to be cut off, and the new one welded into place. This is NOT a job for the do-it-yourselfer. The new spindle must be absolutely square with the axle in order to prevent premature tire wear and wheel tracking problems. I would recommend finding a welder who is experienced with trailer axles. Your local RV dealer or repair facility could probably refer you. You will need to go with a hub that matches the weight capacity needed and the bolt pattern...
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  • Options for a Replacement Hub for Inner Bearing LM48548 and Outer Bearing L44649
    We do not have a brake hub that will fit a LM48548 bearing. If you are looking to change to a 5 on 4-1/2 hub it is an option to use the Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 item # AKHD-545-35-EZ-K. However, even at .003 of a difference this may lead to potential issues down the road. Another option for you is to replace the axle. If you would like to email me your current axles dimensions I can find you a set up that includes hubs with a 5 on 4-1/2...
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  • Idler Hubs and Hub/Drums That Use Bearings 25580 and LM67048
    All idler hubs and hub/drums that use your bearing set # 25580 and # LM67048 appear on the linked page. For the idler hub use either standard 6-on-5-1/2 hub # 8-213-5UC1 or EZ-Lube hub # 8-213-5UC1-EZ. These include seals with a different I.D. so you'll also need 2.250-inch I.D. seal # GS-2250DL. For a 6-on-5-1/2 hub/drum use either standard model # 8-201-5UC3 or EZ-Lube model # 8-201-5UC3-EZ. Again you'll need to add the alternate seals # GS-2250DL. These various hubs use either a...
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  • How to Determine if Trailer has 84 Spindle to Pick Out Replacement
    In order to verify the spindle dimensions so that you can pick out the correct hub/drum you have to get exact dimensions. For that you need to use a digital caliper like part # PTW80157. For how old your trailer is this is especially important as the standard spindles sizes have changed since 1969. An 84 spindle would measure 1.06 where the outer bearing rides, 1.38 where the inner bearing rides, and 1.73 where the seal rides. For a hub with a 6 on 5-1/2 inch bolt pattern that would fit...
    view full answer...
    Image 1 for
  • How to Pick Out Replacement Trailer Hub for Trailer
    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. This is so you get a hub that is compatible with your wheels. I attached an FAQ article on determining bolt pattern for you to check out. 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...
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  • Spindle Recommendation for Trailer Hub with Bearing Dimensions of 1.25 and 1.75 inch
    The spindle you would need based on the dimensions you provided is what is referred to as a #42 spindle. The part # TRU37FR would fit and has a 5 bolt mounting flange for the brake assemblies. These have a 2,600 lb capacity per spindle. I attached a review video for you to check out as well as a picture that has all of the dimensions of the spindle listed.
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  • Measuring Spindle for Replacement Oil Seal
    The seal will be a similar size but it all depends on the spindle itself as to the actual size. It should have a tight seal so you don't leak oil but most systems use grease which also needs a good seal. The best way to determine the correct fit for your specific axle is to use a digital caliper to measure the spindle at that location. I've attached a photo to assist. Once you have that measurement you will have the inner diameter for your seal and then you will measure the back of...
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  • Old Trailer has 2 Different Sized Spindles and Obsolete Bearing and Seal Numbers
    That looks like a mobile home axle. It is possible that both axles are mobile home axles. But the problem with that is they are meant for one time use only. People get them because after they are used they are cheap. It is possible that this is also why the axles have two different sets of bearings. It is also extremely difficult to find parts for mobile home axles. The 2788 and 1779 bearings are associated with hub 22834 which is not available. The seal sounds like a # 29031 which has...
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  • What Size Axle Does a #84 Spindle Fit
    A true 1 inch spindle is a BT8 spindle, like # TRU94FR. The next closest one would be the BTR spindle which is commonly referred to as a 1-1/16 inch spindle, like # TRU44FR and is more common than the BT8. Both of these are typically used with 2,000 lb axles. A #84 spindle, like # TRU24FR or # TRU47FR is bigger and is used for 3,500 lb axles. Common sizes for these are 2-3/8 inch round axle, 3 inch round axle, and 2 inch square axle. I have linked a helpful page that shows the different...
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  • How to Determine the Correct Replacement Hubs for a Tracker Marine Boat Trailer
    What you are going to have to do is pull off one of the hubs, something you will have to do eventually any way, and get the inner and outer bearing numbers. The numbers are stamped into the metal of the bearings. With these numbers I can tell you exactly what you need as replacements. The wheel size and bolt pattern of the wheel will also help. I have included a link to a video that will help.
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  • How to Pick Out Hubs for a Boat Trailer
    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. This is so you get a hub that is compatible with your wheels. I attached an FAQ article on determining bolt pattern for you to check out. 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...
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  • Galvanized Idler Hub That Fits Square #84 Spindle
    Let's start with the spindle and hub you asked about, and they are indeed compatible. Reason why is this spindle accepts hubs with inner bearing L68149 and outer bearing L44649, which is exactly what the Easy Grease hub you mentioned uses, so the two will work together: - Square #84 Spindle for 3,500-lb Trailer Axles # TRU47FR - Easy Grease Trailer Idler Hub Assembly for 3.5K Axles - 5 on 4-1/2 - Galvanized # AKIHUB-545-35-G-EZ-K And as for the hanger kit and leaf springs you mentioned,...
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  • How to Determine Hub and Spindle Size
    The spindle dimensions are as follows: A is the mounting dimension, B is the seal dimension, C is the inner bearing surface, D is the outer bearing surface and E is the diameter of the threaded portion of the spindle for spindle nut selection. Say you need a spindle and hub for a wheel with 5 on 4-1/2 inch bolt pattern and an axle that is 3500 lbs. For a single axle trailer you can use two of either the item # TRU64FR, if your axle is round or item # TRU47FR if your axle is square. Then...
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  • Can't Find Replacement for Older Dexter 22834 Hub
    Hey Randy, thanks for reaching out! We used to carry the 22834 hub back in the day as part 22834UC1, but it has long since been discontinued. I hate to be the final nail in the coffin for your search, but you're unfortunately chasing a ghost. In order to get your trailer up and running you're going to need to either have your spindles cut off and new (more common) ones welded on, or you're going to have to swap out your axle(s) entirely. If you can verify the weight rating of any axles...
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  • Replacing a Damaged Trailer Axle
    Having the bearing numbers and spring seat measurements, you will definitely get most of the way to finding new parts, but you will need a couple more things to confirm the replacements will be correct. The spring seats are only half of the measurements needed to find the correct axle. You will need to measure from hub face to hub face to make sure the total length of the axle is correct as well. Granted with your hub and spindle being damaged, you will just need to get it as close as...
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  • Spindle Recommendation for a Square 2x2 Axle
    For your 2 inch by 2 inch axles you would want a Redline Spindle for Square Axles # TRU47FR. This is a square spindle designed for 2 inch square axles so it should work for well for you. Check out the review video I attached. The EZ Lube Spindle # TRU74FR you referenced is designed for round axles so it would not work for you. Spindles should be welded on by a qualified welder.
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  • How to Determine Which Replacement Hubs for a 2000 Flying Scot Trailex Boat Trailer
    Unfortunately, we aren't able to look up the hubs used by a particular make and model trailer, although I sure wish would could as it would make life a lot easier! The good news is that it's pretty simple to determine which hubs you need. The easiest way to determine which replacement hubs would be needed would be to pull one of the hubs and get the reference number engraved/stamped/etched onto the side of the cages that hold the roller bearings. For a smaller trailer like yours, you...
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  • How Do I Determine What Bearings and Hub are Needed for my Double Axle Trailer
    In order to determine what bearings you will need and whether or not you will be able to use the hub, you will need to take a couple of measurements on your spindle. I am including a diagram which illustrates the measurements that are needed. Once you have these measurements we will be able to determine what bearings are needed and from there, be able to tell whether you will be able to use the hub that you currently have. Please feel free to email me with your spindle measurements and...
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  • Recommended Spindle And Hub Assemblies For 1-1/2 Inch Square 2,000-Lb Axle
    The spindle that you referenced, part # TRU47FR, will work great for you. This spindle features a 4 inch long stub, and is rated for a 3,500-lb axle. I have attached a link to a product review video for this spindle you can check out. The installation of this spindle should be done by a qualified professional welder because it is important that the spindle is welded in place as square and concentric as possible. The hub assembly designed to work well with the TRU47FR spindle is part #...
    view full answer...


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Do you have a question about this Trailer Spindle?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
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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