Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Trailer hub-and-drum assembly includes lug nuts, inner bearing (25580) and race, outer bearing (14125A) and race, grease cap and grease seal. Fits 5,200-lb to 7,000-lb axles.
Determining the Bolt Pattern
The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.
On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: 8 on 6-1/2 means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)
To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: 5 on 4-1/2 means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)
Measuring the distance (D) from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.
Video of Trailer Hub and Drum Assembly - 5,200-lb to 7,000-lb Axles - 8 on 6-1/2 - 9/16" Studs
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Today were going to review part number 8-219-13UC3. This is the Dexter Trailer Hub and Drum Assembly with the 8 on 6-1/2-inch bolt pattern for 9/16 studs. This trailer Hub and Drum Assembly will include the eight 9/16 cone seat lug nuts. It will include the inner bearing, part number 25580, the outer bearing part number 14125A, the grease cap and the 10-36 grease seal. Now the bearing races will also be included but they will already be preinstalled, as you can see, the outer races right here and the inner races already in there. All of our Hub and Drum assemblies when we ship out will have the races already pressed into the assembly.
Now this application will fit most 5200 to 7000-lb Dexter axles. It has a drum dimension of 12-inch diameter by 2-inch wide. The bolt pattern is 8 lug 6-1/2 inch pattern. The stud size is 9/16. Now the capacity on this assembly is 3500 lbs so when this one is used with one on the other side of the axle it will give you maximum capacity of 7000 lbs.
I do want to give you the few dimensions on here. The bolt pattern which will be 8 lugs 6-1/2 inches on a bolt pattern that has an even number of lugs which in this case would be 8, the easiest way is usually to measure from the center, pick any lug or wheel stud and from the center of that stud to the center of the stud directly across from it. In this case this is pretty high so its going to be hard to get an actual--it is 6-1/2 but its hard to get a good--the other way to get a good measurement is just measure from the center of this stud to the one right next to it, either direction. And its 2-1/2 inches. So basically that would tell you that this bolt pattern is an 8 lug 6-1/2 inch bolt pattern.
The other measurement is the drum dimension which would be 12 inches in diameter and that would measure the inside of the drum which is 12 inches and then the width would be 2 inches. So this Hub and Drum assembly will work with a brake assembly that is 12-inch by 2-inch wide. And that should do it for our review on part number 8-219-13UC3.
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