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Expert Answers about Polaris Trailer Spindles


  • 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...
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  • Which Spindles Will Work with the Trailer Hub Assembly for 2,000 lbs Axles
  • You can use any of three spindles with the Trailer Hub Assembly - 2,000 lbs Axles - 5 on 4-1/2, item # 34822545BX. I have listed these spindles below. # TRU94FR - BT8 Spindle for 2,000-lb Trailer Axles - 1-1/4" Diameter # TRU59FR - BT8 Spindle for 2,000-lb Trailer Axles - 1-3/8" Diameter # TRU97FR - Square BT8 Spindle for 2,000-lb Trailer Axles - 1-1/2" Wide The main difference in these spindles is the mounting dimensions on the inboard end of the spindles. the bearing seal and threaded...
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  • 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"...
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  • 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
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  • How Do Trailer Spindles Typically Install on Trailer Axle
  • Removing a damaged spindle is the easy part - it can be cut off with a torch or saw. But welding on a new one is another matter and requires the new spindle be welded exactly straight. It is actually easier to replace the entire axle with a new one that has good spindles on both ends. This may even be less costly than having a new spindle welded on by a qualified welder. It will also ensure that both spindles will have the same working lifespan, which would not be the case if only one is...
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  • Replacing a Spindle on an Enclosed Trailer Axle
  • When replacing the spindle on your trailer with a EZ Lube Spindle, part # TRU74FR, you will need to cut off the existing spindle and weld a new one in place. I strongly recommend you take it to a qualified machine shop to have the appropriate welds done.
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  • Replacing Trailer Axle Spindle From Older Short Spindle To BTR E-Z Lube Spindle
  • It sounds like you have an older style trailer axle with the short spindles. You will need a new Spindle # TRU44FR to mount on your axle as the short hubs are now obsolete. This will allow you to use the what is now standard length spindle dimensions. The CE Smith Trailer Idler Hub Assembly w/ Case # CE13315 is designed to fit the newer BTR spindles that are more commonly found on trailers.
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  • Replacement # 84 Spindle Recommendation to Replace a Trailer Spindle
  • It looks like you cut the spindle off but left the brake mounting flange on your trailer. I would recommend you cut off the entire spindle and have a qualified trailer fabricator weld on the EZ Lube Spindle # TRU74FR as long as your brake assemblies are compatible with the 4 on 4-13/16 inch bolt pattern flanges of this spindle (it should). Is your hub okay? If you email me back with the bolt pattern of the wheels of your trailer and the diameter of your brake assemblies I will recommend...
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  • Who Can Replace a Trailer Spindle
  • 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 bit you will have all sorts of alignment issues.
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  • Replacing Obsolete Trailer Spindles With a 1-3/8" Straight Spindle With Current Size Spindles
  • I am going to recommend changing out your spindles for one of the current size spindles as your spindle is obsolete and no one is producing parts for it currently. This will be extremely helpful in the event of a breakdown as these parts are readily available. We have a few options based on your current axle capacity. I have included a 3,500lb and 5,200lb selection below and included both idler hubs and drum brake hubs. 3,500LB Axle Parts #84 E-Z Lube Spindle w/ Brake Flange # TRU74FR Easy...
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  • How to Fix a Pitted Spindle
  • Unfortunately, we do not sell spindle repair sleeves. However, the best way to repair a pitted spindle is to replace the whole spindle or axle. If you are interested in replacing your spindle, you can give me the spindle product number, or I will need to know a few measurements to recommend a new one. You will want to use a digital caliper like # PTW80157 to get the most accurate dimensions. The spindle measurements are labeled A through F, please view the diagram as a guide. A is the...
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  • How to Measure a Trailer Spindle
  • I have included a picture that shows the measurements needed for a spindle, bearings, seals, faces, and hubs. The spindle measurements are labeled A through F. A is the spindle shaft diameter B is where the grease seal sits C is where the inner bearing sits D is where the outer bearing sits E is the thread diameter at the end of the spindle for the nut F is the spindle shaft length I have also included a link to our spindle main page for you. The measurements need to be as accurate as...
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  • How Does The EZ Lube Spindle # TRU74FR Work On A Boat Trailer
  • On the EZ Lube Spindle # TRU74FR you do not need a grease fitting for the hole on the inside end of the spindle. This is an EZ lube spindle which is designed to allow you to put grease onto the bearings by using the zerk fitting on the threaded end of the spindle. You will not want to block the hole that is on the inside end of the spindle. When the hub is installed on the EZ lube spindle it will form a cavity around the wheel bearings and when you pump grease into the spindle through...
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  • Which Spindle Height of Timbren Axle-Less Trailer Suspension for Car Trailer
  • The drop spindle model you mentioned, part # A35RD545E would be used over the straight spindle model, part # A35RS545E if you wanted a lower deck height on your car trailer. Since you are most likely already using ramps, I cannot see how you would benefit from further lowering the trailer deck height. The straight spindle model would place your spindle center about 4 inches below the mounting surface of the unloaded trailer. The drop spindle model would place the spindle center about 1/4...
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  • Is It Possible to Just Replace Trailer Axle Spindle if Axle is Still Good
  • If your axles are fine you can replace just the spindle and be totally fine. This is a common enough situation which is why we offer just replacement spindles like the part # TRU97FR that you were looking at. Trailer spindles must be installed by a qualified professional welder. Spindles must be welded on perfectly concentric or you will have tracking problems. A trailer shop will have the right jigs to allow the spindle to be welded on correctly.
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  • Who Can Replace Trailer Axle Spindle
  • 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 bit you will have all sorts of alignment issues.
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  • Is a Spindle Washer Needed Between the Spindle Nut and Outer Bearing on Dexter 5 on 4-1/2 Hubs
  • Yes, there should be a washer of some type between the spindle nut and the bearing on your trailer. The washer protects the back side of the bearing from the edges and points on the back side of the spindle nut. There are several types of spindle washers available depending on the spindle configuration on your trailer. The Washer For 1 inch Spindle, # SW1000, is typically used on spindles that have a castle nut, like # 165686, and a cotter pin, # 165649. A D washer, # 5-23, would be...
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  • How to Choose the Correct Spindle When Building a Trailer
  • You will want to go by the capacity of the axle/trailer and get spindles that will match. So for example if the trailer/axle is rated up to 2,000 pounds using the TruRyde spindle # TRU97FR that you were looking at would work. You will also want to look at the bearings each requires (related parts on each spindle page, see link) and avoid an agricultural spindle because it can be difficult to get replacement parts for those. Then you will look at the hubs associated with the bearings the...
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  • Spindle Replacement on 2006 Fleetwood Prowler Camper
  • Replacing the spindle on your axle will require cutting the old spindle off and welding a new spindle (see link) in its place. You would need to find a certified welder so that he has the proper tools and welding equipment to make the repair. To figure out which spindle is correct for your trailer you can use the bearing part numbers, both inner and outer, axle weight capacity and the shape and length of the spindle stub on your trailer. The bearing numbers will let you cross reference...
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  • Recommended 2,000 lbs Idler Hub and Replacement Spindle w/ a 4 on 4 Hub
  • Thanks for the pictures! If your spindle is 3-3/4" with the threads included then the Easy Grease Trailer Idler Hub Assembly item # AKIHUB-440-2-G-EZ-1K will not fit. This would be why you couldn't get the castle nut to thread. It sounds like you have a stub style spindle which we do not have a replacement option for since it's much shorter in length than standard spindles. To avoid anymore hassle of trying to find replacement parts for an obsolete trailer spindle, I recommend replacing...
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