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Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal

Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal

Item # BK3-110
Our Price: $43.80
Trailer Bearings Races Seals Caps
Shipping Weight: 1.85 lbs
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BK3-110 - 6000 lbs Axle etrailer Bearings
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Great Prices for the best trailer bearings races seals caps from etrailer. Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal part number BK3-110 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (140)
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  • Videos (2)
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etrailer Trailer Bearings Races Seals Caps - BK3-110

  • Bearings
  • Standard Bearings
  • Bearing Kits
  • 6000 lbs Axle
  • Bearing 15123 and 25580
  • etrailer
  • Race 25520 and 15245


Features:

Kit Includes:

  • One Inner Bearing and Race
  • One Outer Bearing and Race
  • Grease Seal
  • Cotter Pin
  • EZ Lube spindle washer


Outer Bearing
Inner Bearing
Seal
Seal I.D.
15123
25580
GS-2125DL
2.125"


BK3-110 Bearing Kit, 15123/25580 Bearings,10-10 GS-2125DL Seal





Video of Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Trailer Bearings Races Seals and Caps Rebuild

Speaker 1: Today we're going to take you through the rebuild process on a couple of hubs. We've got an idler hub, and here we've got a hub and drum assembly. Works with electric rigs, but this can also work for just standard discs, if you've got a disc brake style setup.Basically what we're going to show you is how to get all of the bearings out. How to remove the seal. How to remove the race's if they're damaged, then get them replaced in the proper manner. We'll show you how to use an easy loop hub, which we have here.The first thing we are going to need to do is, get the grease cap off the end.

It can have either a rubber plug in it like this one does, or it can be a solid metal cap.These are pressed fit in there, basically by tapping on them on the back side. To remove them, a deadbolt hammer is typically what we're going to use. We're just going to start tapping as we go around. You'll see a little separation start right here, and slowly it'll work it's way off.Now the next step's going to vary a little bit depending on your axle setup. Do you see this is going to have a keeper that goes around the nut.

And that prevents that from being backed off, or removed. A lot of times you'll have a castle nut, which will have just little tabs that stick off, and there will be a cotter pin that passes through it. Just depending on your application, you need to get the keeper for the nut off. This style we just kind of pry out. A cotter pin you would just remove of course.Once we have that off ...

We'll start to take off the nut here, and the washer that's in behind it. Now yours should look a whole lot more dirty than this. There should be a lot of grease packed in, and through the hub, this one's brand new. We thought it'd be nice to show you the components before the grease was on .. Of our washer that comes off.And then here we're going to have our outer bearing.

Continue to pull that. We're gonig to have our inner bearing here. That sits in the backside of the hub. And we didn't put it in yet, we will show you how to put it in. But a seal would typically be covering the backside here. We'll show you how to use a seal removal tool, or another tool. To get that pried up and out. To get an access to that inner bearing.Now for a drum style like this, that process for disassembly is going to be just the same. One thing to keep in mind if you're using a disc brake setup. You'll have to remove the caliper before the disc is going to come off.Now once we have the spindle exposed, as we said this is going to be really greasy. We want to get all the grease removed, and the first thing we'll do is inspect it. We want to make sure that it looks just like what we have here. Everything's nice and smooth. We don't see any kind of discoloration, or any marring on the metal. Indicating that our bearing's got hot.If you do have any of those symptoms, at this point it's time to replace those bearings. You don't want to repack them. Get new bearings, and put in there. You might have a bearing that's come apart in here. Another surface to ensure is in good condition, is where your seal is going to go. That helps seal all the grease inside of our hub. With a damaged or broken seal, that grease is going to seep out. Either out of the hub, or in this case into our brake assembly.Now if your axle has brakes, we're also going to check the disc. Make sure it doesn't have any issues, or your hub. And this is going to be a hub and drum assembly. The brakes are going to ride on this machine surface. You're going to check that for signs of excessive heat, discoloration, or cracking. And this is our magnet surface. We'll check that surface for the same issues.Now inside the hub regardless if it's a disc brake, it's a drum brake like this. Or just a standard idler style hub. You're going to have an outer race. Would be right here, it's a small tapered piece of metal your bearing sits in, and rotates on. That's basically the outer portion of the bearing.You have the same thing here on the backside. This is called the inner race. Now if those show any signs of wear, overheating, or cracking. Those are also something we'll need to replace, which we'll show you how to do in just a minute.Now, with your brake assembly exposed, if you do have electric brakes like we have here. It's a good idea to check all the components for wear, cracking, maybe missing pieces. Check your pad thickness to make sure those are in good shape. Basically if you have a non working brake assembly and you put everything back together, you're just going to have to take it apart and do it all over again to get back to the brake assembly. This gives you a really good option to be able to change them out.And most applications are going to use a four, or maybe a five bolt flange to hold them in place. And you'll just remove the lock nuts, or sometimes you'll have a hex nut with a lock washer. You want to remove those, and then simply slide your assembly off after you cut the wiring.The friction material itself should also be checked for any kinds of cracking, or overheating. If you have any grease inside the system at all, it's likely it's gotten on those pads. It's a good idea to get those changed. Now as far as the removal of the races go, it's going to be just the same whether we're using an idler style hub like we have here. A drum brake like we have here. You can basically see where the idler is, here in the middle of the hub. It's going to go all the way around there, and we just have this extra material here to provide our braking surface.Now if you're doing a disc brake style job again, it's going to be just the same here with the races living inside of the actual hub portion. You'll just have the discs there for the brakes to make contact. We're going to use this little bit smaller one, it's a little bit easier to manage to show you how to get these out. We've talked about where the races are. The outer here, the inner being closer to the inside, but on the backside of the race there's a little lip. That lip's meant to stick out just a little bit further than the hub, and provide us an area to put our tool on, and help to drive that out.If you look all the way through there on that inner race, you'll see that little lip that sticks out just from the hub slightly, and it gives us enough area to use our tool on. Now generally to remove these you're going to use a punch, similar to this. Some guys will use a screwdriver. Or a piece of pipe. If you have a piece of pipe that's small enough to fit inside of that diameter, you can take that down through and allow it to rest on that lip.Use our punch, and then just need a hammer. And we'll start working that out. We're going to tap all the way around. Kind of equally, and evenly apply the force to get it to come on out of the bottom for us.You can see now as it starts to come out there's going to be a little gap created between the hub and the race. And we can just keep going, bringing it on out. Then you can inspect the inside of the hub surface there. Make sure no damage or anything has occurred, and repeat that same process for the outer race if you plan on removing and replacing that one.Now in the outer flat edge, you can see we're going to have our tapered edge on this side. If we roll our race over to the flat side, typically there's going to be a manufacturers part number on there. That will help you identify which race it is, that you need to go back in your system. If those are rubbed off, worn off, if you can't read them. You can measure the outside, to outside diameter of the race here. It's a good idea to use a micrometer to get it exact.Now here's your basic micrometer. And again, the outside of the race is what we're going to need to measure. You want to go . I set the thickest point there. Looks like this one's going to be about 1.98. That's going to be the measurement you'll want to supply.Now while we've got this out, let's also look at the proper way to measure our bearing. Instead of the outside for the bearing, we need to measure the inside diameter. That's going to be pretty simple. Let's pull that out, find the largest measurement we can. Which here, looks like it's going to be 1.03. With that information, we'll be able to get the correct bearing, and the correct race, so they'll fit together properly and make a full bearing kit for us.Now here's the race, we're going to show you how to get this put back in. Basically just going to press fit inside of our hubs. We need to get it down on there. Kind of like that. And you'll have a couple options. A lot of times you're going to see do it yourself or at homer, just going to use a wooden block. Just place it on there. That's going to get you started, but at that point you'll struggle in getting it to go all the way down into it's seat.Now to take care of that problem, there are several seal drivers that are available. Seal and race drivers that are available out there on the market. It's designed to fit down inside of our race, inside of our hub and get it down there where it needs to go. This is part number ptw83020, has several different sizes, even if you have multiple trailers it's going to do the job.Now the side with the angle on it, is designed to fit down inside of our race. If we use the other side, that's going to be for driving your seal into place. Just want to hold it, and take it on in with your hammer. You'll see, you just want to insure that our race is all the way up against that line on the hub where it's supposed to mate to.Now when it comes time to pack your bearings you're going to have several different ways of doing this. You can just use your hand, is the traditional method. That's going to be the method probably reserved for the very occasional trailer work kind of situation. If you do it once or twice a year, probably get away with it that way.Next you would go to a, kind of a sandwich funnel style almost. If you look inside of there, you can see the bearing. It's located between the two pieces. Just use a grease gun. Start filling that with grease, and that's going to fill our bearing for us. And the third, with this one you're just going to place your bearing down and in. It should be pretty close to center. And then we've got our cone her that's going to go down and secure that.Now I think this style, wastes a little bit more grease than what this style will. This has a dust cap. You can see, you can keep your grease in there, put your dust cap on there and save it for later use. This will be if your going to do it every couple years. And this particular style would be if you're a more regular user.Let's start by showing you how to use a bearing packer. Similar to this. Again, we've just got our grease inaudible 00:11:07 here on the top. And then just slowly start to fill it. Now I like this style quite a bit. I think even regular users might enjoy it, because you can get a really quick visual look at that bearing. You're not going to have to overdo it, or have to much grease.You can kind of see in there now, we're starting to get grease to come out of it. Couple more pumps, we'll be good. You can see we've got grease coming out all the way around. Where all of our bearings are. Got a little bit of excess there. Just take that around the outside of it. And then we should be able to lift it off. And now you can see what we we're talking about. Just a little bit of excess there, that you're just going to wind up wasting.Now we'll take our bearing, we're going to place it right down in our race. And then we'll cap off the back with our seal. Right now our seal's going to fit in just like our race did. It's going to have a little bit of a pressure fit to it. Now very often in this situation, I see people using the four by four method. Kind of here, just placing that on and tapping it. As an option though, if you do have one of these. You can see that's designed to fit right on the top of the seal. And help drive it in.The biggest thing here is, just going to be getting it driven in squarely. You can see, this side's in a little bit further than this side. I'm going to start this side first. Now since we didn't have the opportunity to show you before, we're going to take a look at pulling a seal. Now this is a seal puller, we carry this on our website part number ptw1219. This is meant to hook underneath the seal. And then you kind of pull up on it, and just like our race you'll have to work all the way around that edge. Just bringing it out a little at a time.If you don't have that available. Another option would be a screwdriver. You just kind of get that under the seal, and turn it. And see, that'll allow you to also pop that out. We've taken care of our race. Our inner bearing. Our seal. The last component, before we put our hub back in place is going to be our outer bearing. Now with this bearing, I'll show you the hand packing method.This is definitely . Slightly dirtier method than the bearing packer. When we get grease on our hand we want to look at the larger side of the bearing. This is the smaller side. We have a larger side In between the inside and outside there's a gap. We can see our rollers in there. We want to grab that, and use that gap and shove grease inside of it. Now this is going to take a little bit, you want to work in the same spot until you get the grease pushed all the way through. We can see on the top there we've got a little bit starting to come through.And once we push it in the bottom, and you see it start coming out the of the top in those little drips, it's going to indicate that, that section's fully packed. Just need to work all the way around their outside edge now and do the same thing. Alright, once that's all the way around . The bearing will be ready for use.Now one more thing I like to do. We can see our inner bearing there, and our outer bearing. Well between the two, got a pretty big gap in there. If you'll take a . Pretty good amount of grease. We're just going to go all the way around. See how we can go all the way around the inside and just line that really well. The more grease we have in here, the less chance we have of any moisture getting in there, which can cause corrosion, rust, pitting. Pretty much things we do not like when it comes to bearings, races, and hubs.Put plenty of grease in there. And then this one does have the easy lube spindle, that'll even fill it in more. Now we can get our assembly slid on. I like to keep my thumbs on that outer bearing, just to prevent it from . inaudible 00:15:28 pushed off there. Now we can put on the original hardware that we removed, in taking off our hub the first time. In our case, we had our washer and our nut.Now most commonly you'll see pliers similar to this being used. We basically want to get that tightened down. Once it's fully tightened down you'll feel some resistance in the hub. We back it off just slightly. That'll give us a little bit more freedom of motion there. Something you don't want however . Is any movement in, or out on your hub. You want to be sure that everything is compressed, and you don't have what's called end play. Which would be the play in and out.Once we've got that set, then you'll put on whatever tight keeper yours came with. Get that put back in place. Now with an easy lube style hub, you're going to place your grease gun on the end, and then you can just fill the remainder of that hub up.Now for your typical applications, you're either going to have a solid cap, or a cap that'll have a rubber plug in it. A solid cap's going to be for an axle without the grease inaudible 00:16:51 here on the end. Goes on there. Just knock it on with your rubber mallet. Same with the one with the plug. Just gives you a removable area there, be able to cap that off.We'll show you how to put that on. Now as alternatives as well, a lot of times on boat trailers and marine kind of situations. You'll see a bearing buddy. This is going to apply a little bit of pressure on the grease, you'll fill it up. This kind of comes out just a little bit. That applies constant pressure on the grease to make sure we don't have any air, or anything like that. Then there is also an oil bath hub available. Now this is going to be for use with seals that are going to be designed specifically for oil bath use. You'll have to change that seal.We're using a double lip seal. There are also single lip seals available. Of course a double lip seal is going to give you just a little additional security. Keep that in mind when you order. But let's get this knocked on there now so you can see how that works. We just want to take the cap, we're going to center it. This is going to be very similar to what we did with the seal. And then just gently start tapping it around the outside. And it'll seep down on there for you.It's really going to be the same thing that you'll do with any of the end caps. Now with this side done, it's a good idea to take care of all the other hubs. Get them all on the same maintenance schedule. And as long as you'll periodically check the grease, take your trailer out for a trip occasionally. Just to keep everything lubricated. It should extend the life of these parts, and give us years of good service.

Customer Satisfaction Score:


Customer Reviews

Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal - BK3-110

Average Customer Rating:  4.8 out of 5 stars   (140 Customer Reviews)


by:

Great products for my trailer. Jesse D in customer service was very helpful went above and beyond to find the right product for my trailer. Including contacting the axel manufacturer to be sure I got the proper parts!! Awesome CSR!



by:

Etrailer always has easy ordering and plenty of tech info available if needed!



by:

I put these bearings and caps on my 16 foot car hauler and they work great. Nice and quiet and a reasonable price. Thanks ETrailer



by:

I mistakenly ordered the wrong set of bearings for my trailer and when I got my confirmation email I realized my mistake. I called etrailer right away and explained what happened and they were able to get the right bearings out to me with no delay. Very happy!!



by:

Etrailer's web site is a snap to navigate and very easy to identify and order the high quality replacement parts for my boat trailer. I received email update when the package shipped with estimated date for delivery, which ended up being 5 business days. Outstanding! I highly recommend Etrailer.



by:

I purchased these as spares to carry in the truck in case of a bearing failure on the trailer on the road. You have to have these ahead of time, because on the road, 1) you will probably not know your bearing size, which may be different for inner and outer, and 2) good luck finding them at 6:00 at night. I never have had to use them, but you need to research which hubs your trailer manufacturer used on the trailer (Dexter is common), and then find bearing specs from hub manufacturer, and then order spares from etrailer.com.

9,000 lb. boat and tandem trailer.



by:

Excellent service and product ! Thank y ou



by:

Came faster than expected and everything is an exact replacement.



by:

You are fast at getting things out. And appreciate not being asked the next day rate how I liked the product. A year later is right. I’ve had time to use my new bearings and they work great.



by:

Etrailer is a great company to work with.
The bearing kit was an excellent choice and it was packaged very well. They have educational YouTube videos, not only about this product but also on the installation process.
They are also a company who strives on communication. I was informed when my order was shipped, when it would arrive and when I had a concern they were quick to help me find a solution.
Thank you for helping me with my RV needs.



by:

Just what I needed to fix my trailer, thanks Jake!



by:

The people at etrailer know there stuff!!! Thanks for the expedited shipping!!!



by:

Everything about making the order was easy the price was right shipping was perfect



by:

BEST PRICES. EXELLENT CUST SUPPORT



by:

Extremely helpful person made sure that I had the right kit for my non-standard trailer axles. Package arrived on time with all parts correct and present.
Very satisfied and recommend highly.

Kirk P.

7/26/2018

Still working perfectly. No problems at all.



by:

Nice job "e-Trailer"; received this "heavy" order very promptly; did not expect it so quickly in view of how other retailers/ manufacturers/ on-line businesses are behind in fulfilling orders. Packages (3) came all intact, well packed and product received in great condition. The order included:
> 5-Leaf Slipper Spring w/ Hook End for 6,000-lb Trailer Axles (2)
> U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts (2)
> Tandem-Axle Trailer Equalizer Kit for 2" Slipper Springs - 10-1/8" Long Equalizers (2)
> Dexter Nev-R-Adjust Electric Trailer Brake Kit - 12" - Left and Right Hand Assemblies - 6K (2)
> Mounting Bolts and Hardware for 12" Brake Assemblies (2)
> Bearing Buddy Bearing Protectors - Model 2441SS - Stainless Steel (Pair) (2)
> Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal (4)
> Optronics LED Combination Trailer Tail Lights - Submersible - 40 Diodes - Driver and Passenger Side.
These items are being utilized in the total suspension replacement of a 10,000 gvwr tandem axle trailer. Good sized job for a DIY'er. I expect that it will give my JD 2038 tractor a smooth and safe ride as it is towed/ hauled down the highway.
Thank you.
I would/will strongly recommend to a friend/relative or associate.
( I'd take a picture of the "project", but there is a vicious rain storm occurring outside; perhaps one or two pics to follow at a later time).



by:

Seals were loose and bare - no protection what so ever - in large box with brakes and bearing kit. Seal in bearing kit is not for my axle and etrailer has yet been able to help me determine if bearing kit is for my axle.

Etrailer Expert

Jenny N.

1/18/2022

I will have our customer service team reach out to you. The best way to determine if a bearing kit is right for your trailer is know the inner and out bearing numbers as well as the dimensions of the seal. If you do not know this information then measuring the inner diameter of the bearings plus the inner and outer diameter of the seal with a micrometer or dial caliper will help determine what you need. We have a FAQ that goes more into detail that you can see below.



by:

Great product



by:

very poor packaging parts were damaged and missing, everything was just thrown into a large box nothing was individually wrapped on the inside. I don't know why I use this company this is not the first time this has happened

Etrailer Expert

Jenny N.

9/15/2022

I will share this review with our shipping department managers. We are always working to improve our packaging. Our customer service team will reach out to you.



by:

Cannot even find the smallest thing wrong with any order I’ve ever placed with etrailer. They get it right every time. Between them and repairclinic they’re easily the best online stores out there.

Seth

7/5/2021

Still strong. Great stuff from etrailer.



by:

Bearing kit arrived on time and in good condition.

Steven T.

9/29/2022

Installed new bearing kit for my Dextor easy lube axle. Everything fit properly and performed well for more than 10k miles.



by:

Great value. Good customer service. I would recommend them for all your trailer needs.



by:

The inner bearing was exactly what I needed and fitment was great. The kit I chose was a shot in the dark due to the only identifying number was on the inner bearing race. The outer bearing was wrong and the lock washer wouldn't work but that's nobody's fault. Turns out the local part store had the exact outer bearing I needed, a 1987 Mercury uses the same outer bearing. Etrailer.com has the best deal around for a bearing kit!!



by:

I received the parts (bearing kits)on time and very easy online ordering process. I would recommend them as I have ordered with them previously with excellent results

Roy B.

3/26/2020

The product worked out great I will continue to order from etrailer



by:

I am very pleased with the service I received from etrailer.com. With very little information I provided, part numbers for only three parts, they were able to help me track down all other parts needed to replace the bearings in my trailer. Very excellent service.


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  • Trailer Bearing Kit to Replace a 15123 Outer bearing, 25580 Inner Bearing and 2.125 Inch Seal
    Based on the seal measurement, it sounds as if the best fit is going to be the Bearing Kit, 15123/25580 Bearings,10-10 Seal, # BK3-110. The seal that is included in this bearing kit measures 2.125 (2-1/8) inches. The inner and outer bearing numbers remain the same as the BK3-100 kit you have referenced. You want to be certain to get the correct kit to avoid potential problems down the road. I recommend taking a look at the other set of bearings/seals on the other hub to double check, if...
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  • Can The 6,000 Pound Dexter Axle 8327830 Be Used With 2" Wide Leaf Springs?
    The spring seats included on the Dexter Trailer Axle Beam with E-Z Lube Spindles # 8327830 will work with springs that are 1-3/4" wide and 2" wide. This is also American made and rated to 6,000 pounds towing, but does not include the bearings or seals. If you also need the bearings and seals, the # BK3-110 will include everything you need.
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  • Bearing Kit Recommendation for Lippert 6k and 7k Axles
    For a Lippert 6k axle you have two options. The part # BK3-100 and the part # BK3-110. The difference would be the size of the inner diameter of the grease seal. The part # BK3-100 comes with seal that has inner diameter of 2.25 inches and the part # BK3-110 comes with seal that is 2.125 inches. For a 7k axle by Lippert you would want the part # BK3-200 if the seal diameter needed is 2.25 inches or part # BK3-210 for inner diameter of 2.125 inches.
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  • Bearing Kit for Dexter 6,000 Pound Axle
    The correct bearing kit for your 6,000 lb Dexter axle is either the # BK3-100 or # BK3-110. The difference between the two is the grease seal. The # BK3-100 uses a seal with an ID of 2.250", and the # BK3-110 uses a seal with an ID of 2.125". You will need to look for the part number on your current grease seal or measure the inner diameter using a digital caliper like the # PTW80157 to find out which is correct. See the diagram below for where to measure.
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  • Wheel Bearings for 6,000 lb Trailer Axle
    The bearings we offer are from TruRyde, and the most typical bearings for a 6,000 lb axle are # 25580 for the inner bearing and # 15123 for the outer bearing. These also come in a kit depending on the inner diameter of your grease seal; the Bearing Kit # BK3-100 comes with these bearings, their races and a grease seal with a 2.250" inner diameter. Bearing Kit # BK3-110 has the bearings and races with a grease seal that has a 2.125" inner diameter. I have added a link to a help article...
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  • Replacement Hub Bearing Kit For a 1980's Cradle Right Boat Trailer
    We do have 2 different bearing kits available for you with those bearing and races that you are needing. They will include both inner and outer bearings, and races but there are 2 different grease seals that are commonly used with your axle spindle. The Bearing Kit # BK3-100 includes a 10-36 grease seal which will fit a 2.250" diameter spindle. The Bearing Kit # BK3-110 includes a GS-2125DL grease seal which fits a 2.125" diameter spindle. If you can not find this information on your...
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  • Bearing Kit Availability for a Hub with Outer Bearing of 15123
    Most likely you would need either the part # BK3-100 or the # BK3-110. Both of these kits use the 15123 as an outer bearing and a 25580 as an inner bearing. Here's what you will need to do to determine which kit would potentially fit. Measure your spindle where the inner bearing and grease seal ride. The bearing area diameter should be 1.750 and if the grease seal area is 2.250 then you would want the part # BK3-100 or if it is 2.125 you would want the part # BK3-110.
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  • Replacement Bearing Kit For Dexter 6,000 lb Axle 2266389
    Hey David, thanks for the picture. I was able to track down a spec sheet for your Dexter axle which I have included below. The 031-029-02 bearing is item # 15123 and the 031-030-02 bearing is item # 25580. For a bearing kit you can use part # BK3-110 which will come with both bearings, races, grease seal, spindle washer and cotter pin.
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  • Determining The Correct Replacement Grease Seals And Bearings For A 1996 Shoreland'r Boat Trailer
    There unfortunately isn't a way for us to look up the bearings and grease seals for your 1996 Shoreland'r boat trailer so you'll have to remove the hub and measure the spindle and hub in order to find the correct size, unless you can still make out the part numbers etched into the faces of these components. Using a set of calipers # PTW80157 you'll want to measure points B, C, and D on the spindle for the inner diameters. For the outer diameters you can measure the outside of the bearings...
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  • How to Pick Out Grease Seal for a Trailer Hub
    That bearing is not a very common one used anymore since it has an inner diameter of .75 inch. We don't have a way to find out what seal it was used with normally but we can help you measure and determine what you would need. The first measurement is the outer diameter of the grease seal seat on the spindle and the other measurement is the inner diameter of the grease seal seat on the hub. Use a digital caliper like # PTW80157 to get an exact measurement. I attached a link to a page that...
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  • Bearing Kit For Dexter 6,000lb Axles On 2020 Grand Design Reflection 320MKS
    The bearing kit # BK3-210 that you mentioned is specifically for 7,000lb axles. For your 2020 Grand Design Reflection 320MKS fifth wheel with Dexter 6,000lb axles, the correct bearing kit will be either # BK3-100 or # BK3-110. # BK3-100 uses a seal with an ID of 2.250", whereas the # BK3-110 uses a seal with an ID of 2.125". You may need to measure your seal using a tool such as the 4" Carbon Fiber Digital Caliper # PTW80157 in order to correctly match up your bearing kit. I have included...
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