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  1. Trailer Spindles
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  3. For 3500 lb Axle
  4. EZ Lube Spindle
  5. 1-3/4 Inch Diameter
  6. Round
#84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter

#84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter

Item # TRU74FR
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Replacement #84 E-Z Lube spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Grease zerk makes greasing easy. Flange lets you attach a brake assembly. Castle nut, washer, and cotter pin included. Lowest Prices for the best trailer spindles from TruRyde. #84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter part number TRU74FR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (16)
  • Q & A (0)
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TruRyde Trailer Spindles - TRU74FR

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

Replacement #84 E-Z Lube spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Grease zerk makes greasing easy. Flange lets you attach a brake assembly. Castle nut, washer, and cotter pin included.


Features:

  • Tapered spindle replaces a worn or damaged #84 E-Z Lube spindle on your trailer
    • Can also be used to build a custom axle
  • Integrated zerk makes greasing your bearings easy
  • Mounting flange lets you bolt on a brake assembly
  • Weld-on installation
  • Sturdy steel construction
  • Castle nut, tang washer, and D-washer included


Specs:

  • Application: 3,500-lb trailer axles
    • Spindle capacity: 1,750 lbs
  • Stub dimensions: 1-3/4" diameter x 4-1/4" long
  • Overall spindle length: 9"
  • Brake flange configuration: 4 bolt


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
TRU74FR1,750 lbs1.75"1.719"1.378"1.063"1.00"4.25"Round - E-Z Lube and Brake Flange




SP-17584FZDNW-900 TruRyde (TRP) Replacement EZ Lube #84 Spindle for 3.5K Axles - Brake Mounting Flange - 1.75" Diameter x 9" OAL

Replaces R20384EZ






Customer Reviews

#84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter - TRU74FR

Average Customer Rating:  4.9 out of 5 stars   (16 Customer Reviews)

Replacement #84 E-Z Lube spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Grease zerk makes greasing easy. Flange lets you attach a brake assembly. Castle nut, washer, and cotter pin included.

- TRU74FR
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Couldn't find part anywhere else showed up on time and correct



- TRU74FR
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Good product and description, exactly what I expected and no shipping fee.



- TRU74FR
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Very good part , etrailer service terri ble.



- TRU74FR
by:

Very nice roduct Fast service!



- TRU74FR
by:

Shipped early. These guys really work hard to get you the right stuff as quickly as possible.



- TRU74FR
by:

Real easy website that had exactly the part I needed when I couldn't find it anywhere in Canada. Fast to ship. Thanks so much!



- TRU74FR
by:

The right part was in stock and arrived 3 days earlier than promised for no extra charge, thanks to a free shipping up grade. Fast and friendly service to your door step !! Thank you,



- TRU74FR
by:

The spindle showed up very quickly and will work perfect for my boat trailer.



- TRU74FR
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Professional construction



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16
16

Ask the Experts about this TruRyde Trailer Spindles



  • Replacing Damaged Axles and Spindles on a Yacht Club Trailer
    In order to determine which replacement axles you need, I will need a few measurements. I will need hub face to hub face measurement, spring center to center dimension, inner and outer wheel bearing reference number, and the axle capacity. Take a look at the diagram I included. Regarding replacement spindles, you will want to use a dial caliper to measure the dimensions of your spindle for me to recommend a new one. The spindle measurements are labeled A through F, please view the diagram...
    view full answer...
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  • Which is Better an EZ Lube Spindle or a Bearing Buddy Setup
    An EZ lube spindle will be better because it allows you to insert grease from inside the spindle where the bearings are and push out the old grease whereas with a Bearing Buddy you basically just get to push grease through the front of the hub. I attached a link to a page that has all of the EZ lube spindles we carry. The advantage to a Bearing Buddy would be that it would be much easier to install since they basically just replace the grease cap whereas with a new spindle you have to...
    view full answer...
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  • Troubleshooting Slight Amount of Grease Leaking from E-Z Lube Spindle
    Any grease on the back of the wheel could be from the grease working its way out from having slightly too much or it could be from a grease cap or grease seal that is not fitting properly. The grease cap and seal should be keeping any excessive grease off the wheel unless the parts are failing. I recommend pulling the rubber plug to see if there is grease inside and if so just clean the wheel and keep your eye on it for more. If it keeps happening, something is not working correctly...
    view full answer...
  • Greasing E-Z Lube Spindles on Trailer
    It sounds like your you have E-Z Lube spindles on your trailer that feature grease zerk fittings at the ends of the spindle. Adding grease to the spindle and bearings is just a matter of using a grease gun like what it sounds like you have done. The spindle will have a hole in it so that it fills the hub components from the back of the inner bearing with grease as you pump grease into the fitting. You will want pump the grease slowly while occasionally rotating the hub so as to prevent...
    view full answer...
  • Determining Axle Capacity Based Off of the Axle Diameter
    The measurements that you are referring to (listed below) are the actual diameter of the axle itself. By shaft size I am guessing you are referring to the spindle? The spindle actually doesn't go all the way through the axle as you can see when you look at a replacement spindle like part # TRU74FR. Typical Axle Diameters Based on Axle Capacity 1,000-lb - 2,000-lb Axles: 1-1/2 inch - 1-3/4 inch diameter 3,500-lb Axles: 2-3/8 inch diameter 6,000-lb - 7,200-lb Axles: 3 inch diameter 8,000-lb...
    view full answer...
  • Does EZ Lube Spindle # TRU74FR Have Brake Flange
    Actually the part # TRU74FR that you referenced actually has a brake flange on it.
    view full answer...
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  • Benefit of E-Z Lube Spindles for Easier Wheel Bearing Lubrication
    Using a grease gun on the zerk fitting of an E-Z Lube spindle like # TRU74FR can make it all too easy to over-fill the hub grease level. Care should be taken to avoid the risk of blowing out the inside grease seal. For such applications a double-lip seal is recommended since it will be less likely to suffer failure and leak grease everywhere. Using E-Z Lube spindles/grease caps makes for an easier time topping off the wheel bearing grease level. But the same routine maintenance is still...
    view full answer...
  • Acceptable Range of Spindle Deflection on Torsion Axle
    Torsion axles can have different spindles with varying geometry. The specific spindle installed will have a specific range of deflection angle. The spindles on torsion axles can deflect as much as 4-inches between the unloaded and loaded conditions. A 1-inch height drop suggests you are well within the axle capacity and that it is not worn out.
    view full answer...
  • 3,500 lb Spindle Recommendation for Boat Trailer
    We do not have the axle you are looking for, but we do have 3,500 lb spindles that may be just what you need. The part # TRU74FR is an EZ lube spindle with a 3,500 lb capacity. This would fit standard 3,500 lb hubs as well. Trailer spindles should only be installed by a qualified fabricator with trailer axle experience who has the necessary equipment to square up a trailer spindle. It's not a project for someone who's pretty good at welding since if the spindle is off by just a little...
    view full answer...
  • Inner Bearing to Brake Flange Dimension of # 84 Spindle TRU74FR
    The distance from the end of where the inner bearing sits to the brake mounting flange is 1-1/4 inches, as shown in the provided photo. I've linked to a product description video for the spindle you inquired about.
    view full answer...
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  • Recommended Hub for a 2016 Yacht Club WC112 Trailer
    You will need to confirm your bearing numbers and wheel bolt pattern to make sure the correct parts are ordered. Unfortunately we do not have a way to look up the VIN on a trailer, but if you contact the manufacturer of the trailer, they should be able to tell you exactly which inner and outer bearings you have and the bolt pattern of your wheels. If for some reason they can't, you will need to pull off one of the hubs. Once it is off, you will need to measure the inner diameters of both...
    view full answer...
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  • Flange Bolt Pattern and Distance From Flange To Rear Of #84 E-Z Lube Spindle TRU74FR
    The #84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter # TRU74FR you were looking at has a 4 bolt mounting flange that has holes 2-7/8" apart on center, and from the outside edge of the flange to the end of the spindle is 3-1/4" as shown in the included diagram. This spindle will work perfectly with a 10" rotor. I included a video of the # TRU74FR for you to take a look at.
    view full answer...
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  • Design of EZ-Lube Spindles to Allow Grease to Reach Inner and Outer Bearings
    I think you may be referring to the spindle that is installed on your trailer axle. The spindle is the part such as # TRU74FR which has a grease zerk fitting on the spindle's end. This grease fitting allows you to fill the hub bore and both inner and outer bearings with grease without having to remove the hub to pack the bearings by hand. If you have this type of EZ-Lube spindle you do not also need to use Bearing Buddy bearing protectors like those mentioned in the question you reviewed....
    view full answer...
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  • Is it Normal for Grease to Leak Out of EZ Lube Grease Cap
    One of the big issues that EZ lube spindles create is that it's too easy to put too much grease into them which then either causes the seal to blow out or the cap to leak like what you have found. This oftentimes happens after that first trip like what happened to you. I don't actually recommend using the EZ lube fitting to add grease and instead recommend just packing it all by hand and leaving it as-is. In your case I would recommend pulling the hubs off and making sure the seal is in...
    view full answer...
  • Is There a #84 Spindle for 3,500 lb Trailer Axles That Comes With Brake Flange
    There is an option very, very similar to the #84 Spindle for 3,500 lb Trailer Axles - 2" Diameter # TRU24FR that includes a brake mounting flange, though not exactly the same. The difference is in the stub dimensions, as the aforementioned has a 2" diameter stub, and the option that comes with a brake flange has a 1-3/4" diameter stub: - #84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter # TRU74FR Apart from that, the difference is that this spindle is an...
    view full answer...
  • Do You Have a Weld On # 84 Spindle With a Grease Zerk For E-Z Lube Hubs?
    The #84 E-Z Lube Spindle # TRU74FR matches the dimensions of the #84 Spindle # TRU64FR and will have the E-Z lube spindle and a brake flange. With the brake flange the stub will be 3/4" longer. If necessary you can cut off the brake flange to get the correct length but otherwise it will not affect the operation of a non braking idler hub.
    view full answer...
  • Recommendation for Failing EZ Lube Spindle and Vortex Hub
    We do not carry the Vortex hubs made by Tie Down Engineering. Unfortunately because of this, I don't really know how to assist with troubleshooting the hubs themselves as they are designed to seal out moisture and debris, yet are obviously failing. The threaded cab should have an o-ring to prevent moisture entry and the seal should prevent it on the other side. The zerk fitting on your EZ lub spindles is a part of the spindle so to replace that would require changing the entire spindle....
    view full answer...
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  • Replacement Spindle Recommendation for a 1988 Tandem Axle Shorelanr Boat Trailer
    Since the diameter of the spindle where the outer bearing rides is 1-1/16 inches most likely you have a number 84 spindle. You will need to verify that where the inner bearing rides is 1.38 inches and where the seal rides is 1.73 to be sure though. If so, the correct spindle would be the part # TRU74FR.
    view full answer...
  • What Is The Distance From The Brake Mounting Flange To Tip Of Spindle On # 84 Spindle TRU74FR?
    I had our warehouse measure the #84 E-Z Lube Spindle w/ Brake Flange for 3,500-lb Trailer Axle - 1-3/4" Diameter # TRU74FR you were looking at and from the front of the brake mounting flange to the tip of the spindle measures 5-3/8", and from the back of the brake mounting flange to the end of the spindle measures 3-3/8". I included a diagram showing these measurements and a video of the # TRU74FR for you to take a look at.
    view full answer...
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  • Will Overheating a Trailer Hub Damage the Spindle
    If the spindles were overheated due to a bearing malfunction then you will need to replace them or the axle. The spindles are already heat treated for strength but you will lose that strength if heated beyond a certain point after the fact. If there are any discolorations on the spindle (usually blueish) then that would indicate heat damage. If you can let me know what size axle you have and the shape I would be glad to see about getting you replacement spindles if applicable but most cases...
    view full answer...
  • 84 Spindle with Brake Mounting Flange Recommendation
    Adding brake mounting flanges to a spindle is something that only a qualified welder with experience welding them on should do. A much easier solution would be to go with a spindle that has a flange mounted to it already like the part # TRU74FR that would fit the same hubs as the # TRU47FR that you referenced. Also, the # TRU47FR is a square spindle and we only offer flanges for round spindles.
    view full answer...
  • Can Electric Drum Brakes be Installed on a Trailer with Independent Suspension
    To add electric drum brakes to your trailer the current axle or spindles will have to have brake mounting flanges or, if no flanges are present, they will have to be welded on. For an example of a spindle that has a brake mounting flange take a look at # TRU37FR or # TRU74FR. If flanges need to be welded on the welding will need to be done by a qualified professional with experience welding on brake flanges. It is a precision job that requires a special jig. I have included a link to the...
    view full answer...
  • How Far Out will a Hub Face be on a #84 Trailer Spindle
    I can tell you roughly where the hub face will be on a #84 spindle but I would have to use # TRU74FR as an example. On this spindle from the brake mounting flange to the hub face it will be approximately 3 to 3-1/2 inches. Since spindle # TRU64FR does not have a mounting flange you would be looking at the distance from about an 1 back from the line between the raw steel and the machined steel on the stub to the hub face. These are the best guesstimates I can provide without having everything...
    view full answer...
  • 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...
    view full answer...


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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 Alexander C
Written by:
Alexander C
Employee Noah M
Updated by:
Noah M

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