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  1. Trailer Spindles
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  3. For 5000 lb Axle
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#42 Spindle for 5,200-lb to 7,000-lb Trailer Axles - 2-1/4" Diameter

#42 Spindle for 5,200-lb to 7,000-lb Trailer Axles - 2-1/4" Diameter

Item # TRU57FR
Our Price: $62.92
Trailer Spindles
Shipping Weight: 10 lbs
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Replacement #42 spindle welds onto your 5,200-lb to 7,000-lb trailer axle. Works with 25580 inner bearing and outer bearings with 1.25" inner diameter. Castle nut, washer, and cotter pin included. Great Prices for the best trailer spindles from TruRyde. #42 Spindle for 5,200-lb to 7,000-lb Trailer Axles - 2-1/4" Diameter part number TRU57FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (38)
  • Q & A (0)
  • Photos

TruRyde Trailer Spindles - TRU57FR

  • For 5000 lb Axle
  • For 6000 lb Axle
  • For 7000 lb Axle
  • Standard Spindle
  • 2-1/4 Inch Diameter
  • Round
  • TruRyde

Replacement #42 spindle welds onto your 5,200-lb to 7,000-lb trailer axle. Works with 25580 inner bearing and outer bearings with 1.25" inner diameter. Castle nut, washer, and cotter pin included.


Features:

  • Straight spindle replaces a worn or damaged #42 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: 5,200-lb - 7,000-lb trailer axles
    • Spindle capacity: 3,500 lbs
  • Stub diameter: 2-1/4" x 6" long
  • Overall spindle length: 11"


Bearing, Race, and Seal Information

  • Bearings (sold separately)
    • Inner bearing: 25580 (1.75" inner diameter)
    • Outer bearing: varies depending on hub capacity (1.25" inner diameter)
  • Races (sold separately)
    • Inner race: 25520
    • Outer race: varies depending on outer bearing
  • Grease seal (sold separately): GS-2250DL
    • Inner diameter: 2.25"
    • Outer diameter: 3.376"

spindle diagram

Part NumberCapacityABCDEFRound/Square
TRU57FR3,500 lbs2.25"2.25"1.75"1.25"1.00"6.00"Round


SP-22542NWC TruRyde (TRP) Replacement #42 Spindle for 5.2K - 7K Axles - 2.25" Diameter x 11" OAL

Replaces R50642





Customer Satisfaction Score:


Customer Reviews

#42 Spindle for 5,200-lb to 7,000-lb Trailer Axles - 2-1/4" Diameter - TRU57FR

Average Customer Rating:  4.7 out of 5 stars   (38 Customer Reviews)

Replacement #42 spindle welds onto your 5,200-lb to 7,000-lb trailer axle. Works with 25580 inner bearing and outer bearings with 1.25" inner diameter. Castle nut, washer, and cotter pin included.

by:

Product was received as ordered. The box with the hubs and spindles was soaking wet and product was exposed. One of the boxes with tire and rim was torn open on the back. No apparent damage to any of the product. Typical UPS delivery.



by:

The part is just what we needed. I would ask for better packing to assure parts don't get lost in shipping. I would also ask that there be a packing list included in the box for the receiving team to identify PO it belongs to.



by:

great price and they are working good. the unmachined side is about .015" over size so if your going to weld this in DOM tubing you need to grind or machine a little. Works really well, nice machine work on them



by:

The products don’t have any damage at all. We need to return it because they are the wrong size. Can you please let me know what do I have to do? Thanks



by:

Excellent delivery and just what we nee ded.



by:

The spindles themself are heavy and seem like good products but they were layed loose in box nothing keeping them from getting banged around in the box

Etrailer Expert

Sierra K.

8/24/2021

I am sorry about the lack of packaging in the box. I hope nothing was damaged. If so, please contact us at 800-298-1624.



by:

Awesome customer service. This is my go to for trailer parts.



by:

GREAT REPLACEMENT PART



by:

DOES WHAT ITS SUPPOSED TO DO, EASY INSTALL, ALL PERFECT!!



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Great quality, very prompt delivery, even with a holiday week



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Show More Reviews

See what our Experts say about this TruRyde Trailer Spindles

  • What Steel Is The TruRyde 42 Spindle # TRU57FR Made From?
    Yes, the #42 Spindle # TRU57FR is made from SAE 1045 hot rolled steel bar stock.
    view full answer...
  • Replacement Spindle for Premco Tandem Axle Trailer
    Our main page for trailer spindles is linked for you. Since your tandem axle trailer is rated for 9500-lbs it uses either 5000-lb or 5200-lb axles. For a 5K axle we offer # TRU57FR which uses a grease seal with an inner diameter (ID) of 2.24-inches, an inner bearing ID of 1.74-inches and an outer bearing ID of 1.25-inches. For a 5200-lb axle we have E-Z Lube spindle # TRU37FR which has the same seal and bearing surface dimensions. Please refer to the items' linked pages for a diagram...
    view full answer...
  • Replacement Spindle for 7,000 lbs Axle
    We have the #42 E-Z Lube Spindle w/ Flange for 5.2K to 7K Trailer Axles - 2-1/4" Diameter # TRU37FR and the #42 Spindle for 5,200-lb to 7,000-lb Trailer Axles - 2-1/4" Diameter # TRU57FR which are both compatible with 7,000 lb axles. Both will measure 4 inches from the grease seal position to the threads. You can see this in the attached video at the 1:42 second mark. The difference between these is the zerk fitting and the brake flange. The spindle dimensions will be identical.
    view full answer...
  • What Spindles Should be Used on Dexter 7k Trailer Axle
    Yes, the number 42 spindle is the standard for Dexter 7k axles like what you have. For that we have the part # TRU57FR which does not have a brake flange or we have the part # TRU37FR which does have the brake flange.
    view full answer...
  • Replacement Axle Spindle With 2.25 Diameter Spindle
    Here is a list of the Agricultural Spindles we currently carry. Spindle # TRU34FR Spindle # TRU54FR Spindle # TRU67FR We also have the #42 Spindle # TRU57FR which has the 2.25" that may be what you are needing. This is a very common size that may have been used in a Agricultural application.
    view full answer...
  • How to Determine Correct Replacement Spindle Based on Measurements
    I can tell you how to determine the correct spindle based on your measurements, and what you will need is a digital caliper, though the first thing you need to know is the weight rating of your trailer axle. From there, what you need to do is measure your spindle to the thousandths of an inch where the bearings and grease seal ride, along with the length and diameter of your stub. For example, the accompanying diagram shows the measurements of the #42 Spindle for 5,200 lb to 7,000 lb Trailer...
    view full answer...
    Image 1 for
  • Compatibility of Redline Replacement Axle Spindles with Dexter Hubs
    TruRyde Spindles are indeed compatible with Dexter hubs, if the spindle is matched properly with the bearings your hub uses. To find the correct spindle, match the inside diameter of your inner bearing, outer bearing and grease seal to the dimensions of the bearing surface of the spindle, as shown in the photo I provided. You'll also need to match the weight capacity of the spindle with that of the axle.
    view full answer...
    Image 1 for
  • Capacity of Trailer Axle Spindles # TRU57FR and # TRU34FR
    The only capacities we have for the two spindles you mentioned is the capacity of them if they are used as they are intended on a trailer axle. The part # TRU34FR is for a 3,000 lb axle so it has a 1,500 lb capacity and the # TRU57FR is intended for a 5,000 lb axle so it has a 2,500 lb capacity.
    view full answer...
  • 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...
  • What Size Spindle is Needed for a M/H trailer
    The axle spindle you need to order will depend on the weight capacity of your trailer and on the type of spindle (see link) already being used, if you only need to replace one spindle. To figure out which spindle is correct you can use the bearing part numbers, both inner and outer, and the shape and length of the spindle stub on your trailer. The bearing numbers will let you cross reference the correct spindle measurements for your hub. The axle stub shape and length will allow you to...
    view full answer...
  • What Material are Trailer Spindles Made of
    TruRyde spindles, like # TRU57FR are made of automotive quality high strength steel.
    view full answer...
  • Clearance Differences Between Trailer Tire Sizes 8x14.5 and 235/80-16
    We recommend to have at least 2 inches of clearance from the tire to the trailer frame and 3 to 4 inches of clearance from the top of the tire to fender to accommodate for suspension travel. So to go from the size you have now of 8x14.5 to the 235/80-16 like the # TA26FR you'd lose about 3/4 of an inch of inner clearance between the tire and the frame and then in vertical clearance 2 inches. This setup would also stick out about 1-1/4 inches further than what you have now.
    view full answer...
  • Spindle With Same Dimensions as TRU37FR That Does not Have EZ Lube or Flange
    There is the same spindle as # TRU37FR but is not EZ Lube and does not have a brake flange. What you are seeking is spindle # TRU57FR which is otherwise the same; I've added a link to a video review of this spindle for you to take a look at.
    view full answer...
    Image 1 for
  • Which Spindle Will Fit 6 on 6 Dexter Hub Part 42660UC1
    The correct spindle for Dexter hub, part # 42660UC1, is spindle part # TRU57FR or EZ Lube spindle part # TRU37FR. There are other 6 on 6 hubs that you could use if you want heavier spindles. How much weight are you wanting each axle to hold? How many axles?
    view full answer...
  • Replacement 7,000LB Trailer Axle Spindle
    I have been unable to locate a spindle that meets the exact specifications that you have on your current spindle. The #42 Spindle # TRU57FR will be the closest that I can find to matching your current spindle. It is 2.25" diameter, rated for 7,000lbs. Overall length is only 11", has a 1.75" inner bearing, 1.25" outer bearing and 1" nut. The spindle includes a new washer, castle nut and cotter pin. The Bearing Kit # BK3-200 contains the correct bearings, races, grease seal and a replacement...
    view full answer...
  • Are There Replacement 4,400 lb Spindles
    We do not have replacement 4,400 lb spindles, the closest we can offer is a 5,200 lb spindle, the #42 Spindle # TRU57FR. You'd need new hubs as well since these spindles won't take 4,400 lb hubs, so for that you would need the Dexter Trailer Idler Hub Assembly for 5,200-lb Axles - 6 on 5-1/2 # 8-213-5UC1. I realize totally replacing your spindle and also hubs is not an ideal solution but I did at least want to mention it as something to consider.
    view full answer...
  • Recommended Spindle Without Brake Flange to Fit 7K Idler Hub AKIHUB-865-7-2-K
    For a number 42 spindle without a brake flange, the size that works with 7K Idler Hub Assembly # AKIHUB-865-7-2-K, you can use part # TRU57FR. The same size spindle WITH brake flange and an EZ Lube grease zerk fitting is part # TRU37FR.
    view full answer...
  • Which Spindle is Used with Trailer Hub Assembly, Part # 42865UC1
    There are two spindle options for the Trailer Hub Assembly, part # 42865-KIT. The spindle used would depend on the capacity of your axle. For a 5000 pound axle, use part # TRU57FR. For a 5200 pound axle, you would use part # TRU37FR. The TRU37FR is an EZ lube spindle with the zerk fitting for adding grease to the bearing assemblies.
    view full answer...
  • Number 42 Spindle Recommendation
    We do have a Dexter number 42 spindle. For a standard spindle you would want the part # TRU57FR. For the EZ lube version you would want the part # TRU37FR. This comes with a brake mounting flange. The seal inner diameter needed for this would be 2.24. The bearing dimensions you referenced are correct.
    view full answer...
  • Recommended Spindle For # 8-174-5UC3 Trailer Hub And Drum Assembly
    The spindle that would work with the hub # 8-174-5UC3 you mentioned is the TruRyde Spindle, part # TRU57FR. This spindle includes the washer, castle nut, and pin. This has a 2,500 lb capacity. I have attached a product review video for this spindle you can check out. If you are interested in a spindle that has the EZ lube zerk fitting, I recommend part # TRU37FR. This has the brake mounting flange attached to the spindle.
    view full answer...
  • Will TruRyde Spindle TRU57FR Fit Dexter Trailer Hub Assembly 42865-KIT
    The TruRyde #42 Spindle # TRU57FR is compatible with the Dexter Trailer Hub Assembly # 42865-KIT. Since the hub uses bearings 25580 and 14125A, whose inner diameters match up to the spindle dimensions, the hub will work on the spindle. Spindles need to be professionally welded on perfectly straight and concentric to ensure you do not have issues with trailer tracking or uneven tire wear.
    view full answer...
  • 6k Rated Agricultural Hub and Spindle with 6 Lug Bolt Pattern
    For an agriculture hub designed for a 6k axle with a 6 on 6 inch bolt pattern you would want the part # 42660UC1. For the matching spindle for this hub you would want the number 42 spindle part # TRU57FR.
    view full answer...
  • What Spindle Fits the Dexter Trailer Idler Hub # 8-231-9UC1-EZ?
    The correct spindle that fits the Dexter Trailer Idler Hub Assembly for 5,200-lb to 7,000-lb E-Z Lube Axles - 8 on 6-1/2 # 8-231-9UC1-EZ is the #42 Spindle for 5,200-lb to 7,000-lb Trailer Axles - 2-1/4" Diameter # TRU57FR. We also have the #42 spindle that comes with a brake flange if you need it. That is the #42 E-Z Lube Spindle w/ Flange for 5.2K to 7K Trailer Axles - 2-1/4" Diameter # TRU37FR.
    view full answer...
  • Can Hub # 42660UC1 Be Converted To Fit a Spindle # TRU57FR?
    You are either going to get a different Spindle # TRU57FR or Hub # AH60880FCOMP as there is not a set of bearings and races we carry to make the Hub # 42660UC1 fit on the Spindle # TRU67FR. Since you most likely already have the 6 on 6" wheels and tires it makes the most sense to change to the Spindle # TRU57FR and keep the Hub # 42660UC1.
    view full answer...

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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