This hub assembly is made for heavy-duty farm use on non-braked trailers. It fits 15,000-lb axles with agricultural spindles and handles up to 7,500 lbs per hub at a max speed of 20 mph. The 8 on 8" bolt pattern and 6" pilot hole diameter make it a solid match for large, load-bearing wheels common in farm applications. It’s a tough, purpose-built hub that keeps equipment rolling smoothly in demanding conditions.
Keeping bearings greased is fast and mess-free with the built-in grease fitting. It lets you add lubricant directly where it’s needed without taking the hub apart. That means less downtime in the shop and more time keeping your equipment moving when every hour counts.
You get a fully equipped setup ready for installation—inner bearing (387AS), outer bearing (LM501349), matching races (382A and LM-501310), grease seal (AG-GS-40083000SL), grease cap, wheel studs, and eight wheel nuts. With all the core parts included and races pre-installed, you can skip the hunt for extra pieces and get straight to mounting.
This hub’s precision bearing and seal dimensions—2.250" inner bearing ID, 1.625" outer bearing ID, and a 3.000"/4.008" seal—ensure a secure fit on the correct spindle type (TRP # SP-758300-160). The -.38" wheel offset helps maintain proper alignment under heavy loads, reducing wear on tires and components over time. Every element is made to handle harsh use while staying reliable season after season.
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at this agricultural trailer hub assembly for the 15,000 pound axles. It has an eight on eight inch bolt pattern. Now, this trailer hub assembly is designed to fit on agricultural trailers that have an eight on eight inch bolt pattern, and it is designed for non-brake axles. If you notice on the side right over here is a built-in grease zerk fitting, makes for fast, easy lubricating of your hub assembly. Just attach your grease gun to that, pump grease in there to lubricate the bearings.
Now, this part will include everything laid out here on the table. The hub with the bearing race is pre-installed. The outer bearing, which is part number LM501349, inner bearing part number 387AS, the grease seal, the grease cap. And then if you notice, the studs have the lug nuts on them. They lug nuts are included.
It's eight of the 5/8 inch by 18 size wheel lug nuts. Now, this assembly is designed to work on a TRP spindle of part number SP-758300-160. And this hub assembly does have a 7,500 pound load capacity. So when this is used with the hub on the other side, it'll meet the 15,000 pound axle capacity. Also, the agricultural hubs like this are designed for low speed application.
So the load capacity is based on a 20 mile per hour maximum speed. If you notice the yellow zinc finish that's on the wheel studs, the wheel lug nuts, and even the grease cap. Now the pilot hole diameter, which would be measured from here all the way across to here, so in other words, when your wheel assembly goes on here, the pilot hole size of the wheel that fits on here is gonna be six inches. The bolt pattern we mentioned is eight on eight inches. And if you wanna measure the bolt pattern on a wheel or on an assembly that has a even number of lugs, in this case eight, it's pretty easy because if you notice, the lug holes are right across from each other.
So all you have to do is pick any one, let's say this one, and you'll measure from the center of this one directly across to the center of the other one. So that's an eight inch measurement. So it's eight lugs, eight inch measurement. But that should do it for a look at this agricultural trailer hub assembly for 15,000 pound axes.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
Item was used and damaged
Put my order in and it was here in less than 2 days. Everything fit exactly like it should. Extremely satisfied!!
Excellent service and telephone support staff was very helpful.
Hard to find hub assembly but they managed to find one and received it within days.
Thanks
It was a hard to find hub but fit perfectly on my tender tank trailer. Well built.
Worked great
item fit perfectly, was shipped promptly, and came with all needed components.
THIS WAS A CROSS FROM ANOTHER NUMBER BUT BEARINGS WON'T FIT
Great product, fit perfectly. I really liked the addition of a grease zerk for easy servicing.
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