Trailer Hubs and Drums

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Dexter Axle

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8 on 6-1/2 Inch

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For 8000 lbs Axles

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Hub with Integrated Drum

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Oil Bath

Dexter Trailer Hub and Drum Assembly for 8,000-lb Axles - 12-1/4" - 8 on 6-1/2 - Oil Bath

Dexter Trailer Hub and Drum Assembly for 8,000-lb Axles - 12-1/4" - 8 on 6-1/2 - Oil Bath

Item # 8-285-9UC3

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Trailer Hubs and Drums

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Shipping Weight: 53 lbs

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Dexter Axle Trailer Hubs and Drums - 8-285-9UC3
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Install this hub-and-drum assembly on your trailer. Fits 8,000-lb axles. Inner bearing (25580) and race, outer bearing (02475) and race, oil seal, oil cap, wheel bolts, and lug nuts included. Oil bath system allows for easy maintenance. Lowest Prices for the best trailer hubs and drums from Dexter Axle. Dexter Trailer Hub and Drum Assembly for 8,000-lb Axles - 12-1/4" - 8 on 6-1/2 - Oil Bath part number 8-285-9UC3 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (4)
  • Q & A (7)
  • Videos (1)
  • Photos
  • Why etrailer?

Dexter Axle Trailer Hubs and Drums - 8-285-9UC3

  • 8 on 6-1/2 Inch
  • For 8000 lbs Axles
  • Hub with Integrated Drum
  • Oil Bath
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Dexter Axle
  • 25580
  • 9/16 Inch Stud
  • 2475

Install this hub-and-drum assembly on your trailer. Fits 8,000-lb axles. Inner bearing (25580) and race, outer bearing (02475) and race, oil seal, oil cap, wheel bolts, and lug nuts included. Oil bath system allows for easy maintenance.


Features:

  • Trailer hub-and-drum assembly provides surface area for brake shoes to grip when brake is activated
    • Compatible with electric and hydraulic drum brakes
  • Oil bath lets you check lubricant level without disassembling the hub
    • Look through clear oil cap to check lubrication
  • Sturdy iron construction
  • Bearings, races, oil seal, oil cap, wheel bolts, and lug nuts are included
  • Hub and drum are made in the USA


Specs:

  • Application: 8,000-lb trailer axles
  • Drum dimensions: 12-1/4" diameter x 3-3/8" wide
    • Works with 12-1/4" brake assembly
  • Bolt pattern: 8 on 6-1/2"
  • Wheel stud diameter: 9/16"
  • Pilot hole diameter: 4-3/4"
  • Weight capacity: 4,000 lbs


Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: 25580 (1.75" inner diameter)
    • Outer bearing: 02475 (1.25" inner diameter)
  • Races (included)
    • Inner race: 25520
    • Outer race: 02420
  • Oil seal (included): 10-63
    • Inner diameter: 2.250"
    • Outer diameter: 3.376"

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.


Bolt Pattern - Even

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.)


Bolt Pattern - Odd

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.)


Bolt Pattern - Side

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.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"


K08-285-92 Dexter 12-1/4" Hub and Drum Assembly for 8K Axle with Hardware - 8 on 6-1/2 - Oil Bath

Replaces 8-285-9UC3 and 123050







Video of Dexter Trailer Hub and Drum Assembly for 8,000-lb Axles - 12-1/4" - 8 on 6-1/2 - Oil Bath


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




Video Transcript for Dexter Axle Trailer Hubs and Drums - Hub with Integrated Drum - 8-285-9UC3 Review

Speaker 1: Today we're going to take a look at the Dexter Oil Bath Trailer Hub and Drum Assembly with the 8 on 6-1/2" bolt pattern. Now the application for this hub and drum assembly is 8000-lb Dexter Axles. By spinning this around I'll show you inside, you can see that it will work with both electric and hydraulic brakes. The drum dimension on this is going to be the inside diameter is 12-1/4". The width on it is right at 3-3/8" wide. Again the bolt pattern on this is an 8 on 6-1/2" bolt pattern.

Now this part will include everything shown here on the table. Will include the bearings, the oil seal, the oil cap, and the lug nuts.And just to go through each one and the part numbers. The inner bearing it uses, it comes with is 25580. Outer bearing is 02475. Comes with the unitized oil seal because it's an oil bath set up, it's part number 10-63.

Comes with the oil cap, which is a clear poly carbonic cap, which includes both the O ring and the rubber plug, part number on this cap is KPCAP. And it comes with 8 of the 9/16s by 18 lug nuts, part number 6-53. And the weight capacity on this is 4,000 lbs per assembly, so when you use just one, on the other side it will meet the 8,000 lb weight capacity of the Dexter Axle. But that should do it for the review on the Dexter Oil Bath Trailer Hub and Drum Assembly with the 8 on 6-1/2" bolt pattern.


Customer Reviews

Dexter Trailer Hub and Drum Assembly for 8,000-lb Axles - 12-1/4" - 8 on 6-1/2 - Oil Bath - 8-285-9UC3

Average Customer Rating:  5.0 out of 5 stars   (4 Customer Reviews)

Install this hub-and-drum assembly on your trailer. Fits 8,000-lb axles. Inner bearing (25580) and race, outer bearing (02475) and race, oil seal, oil cap, wheel bolts, and lug nuts included. Oil bath system allows for easy maintenance.

- 8-285-9UC3
by:

The break parts are like original. When we got it back together we got our trailer DOT certified.Life can go on. 728658



- 8-285-9UC3
by:

Service and delivery was spot on staff that I talked to were great thanks it won’t be the last time I order 678005



- 8-285-9UC3
by:

It was easy finding the right hub for the trailer. Everything was correct and made the job easy to complete. 595043



- 8-285-9UC3
by:

Fast service 583041


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Ask the Experts about this Dexter Axle Trailer Hubs and Drums

Do you have a question about this Trailer Hubs and Drum?


  • Can Dexter Nev-R-Lube Hubs Be Replaced with Oil Bath Hubs
  • The existing Dexter 8K Nev-R-Lube spindles on your trailer are designed specifically for the cartridge-style bearing that the corresponding Nev-R-Lube Hubs # 8-389-81UC3 use. The spindles themselves are uniquely sized for this purpose so unfortunately the hubs can't be replaced with standard hubs that use traditional inner and outer bearings, including oil-bath units like the Dexter 8K # 8-285-9UC3 that you referenced. The only way to switch to hubs like this would be to replace the...
    view full answer...

  • Replacement Hubs for 8000lb Lippert Axle
  • Yes, the Dexter Hub Assembly # 8-285-9UC3 will fit on your Lippert Axle, but after checking with Lippert it looks like the 8k axle that you're using originally came with a hub with 5/8" stud diameter, where this Dexter Hub has 9/16" studs- both hubs use inner bearing # 25580 /outer bearing # 02475 . In order to avoid having to change out your wheels as well, I recommend going with the Redline Hub and Drum Assembly # 8-285-10UC3-A . It is also an oil lubricated hub, has 5/8" studs and will...
    view full answer...

  • Replacement Brake Assemblies for Dexter 8-285 Oil Bath Hub and Drum for 8,000 Pound Axle
  • For your 8-285 hub and drum similar to the Dexter Hub and Drum, Oil Bath # 8-285-9UC3 for 8K pound axles, the Dexter Electric Brake Assembly, Right Hand # 23-435 and Left Hand # 23-434 are the correct fit brake assemblies for your axle. Another great option for replacement trailer brake assemblies are the Electric Trailer Brake with Dust Shield, Left Hand # AKEBRK-8L and Right Hand # AKEBRK-8R. These brake assemblies have the 12-1/4 inch x 3-3/8 inch size needed for your hub, are designed...
    view full answer...

  • How to Tell if Trailer Hub 8-258 Will Fit Spindle
  • We do have the Dexter trailer hub and drum part # 8-285-9UC3 which might work but you would need to verify a few things. This is an 8k oil-bath hub with a bolt pattern of 8 on 6-1/2 inches. The bearings it takes are 25580 Inner / 02475 Outer. You would need to pull the hubs you have to get the bearing numbers or the dimensions where the bearings ride. If those dimensions are 1.74 inch and 1.25 inch this hub would fit.
    view full answer...

  • Can Lippert 8K Axle be Converted to Oil
  • Yes you can convert your Lippert 8K axle so that it works with oil instead of grease. Just swap out your hub and drum assembly with one that has threads for the oil cap to install on. For example, the Dexter Axle part # 8-285-9UC3 should work just fine but you need to verify that the inner bearing # 25580 and outer bearing # 02475 are correct as well as the oil seal with the 2.250" inner diameter. If this fits then the only other thing you need is bearing oil like part # XLPROLUBE. Please...
    view full answer...

  • Replacement Electric Drum Brakes and Hub/Drum Assembly for Dexter Axle
  • I was able to contact Dexter Axle and get the information on your axle. The p12 that you referred to has to do with the location of the plant that manufactured your axle. The direct replacement for your drum brakes would be the Right Hand Assembly # 23-435 and the Left Hand Assembly # 23-434. These are the self-adjusting brakes with the 4 bolt pattern to match with your brake mounting flange. The Hub & Drum Assembly - 8 on 6-1/2 - Oil Bath # 8-285-9UC3 comes with the correct hub,...
    view full answer...

  • Does Dexter Hub part # 8-285-9UC3 Come with Bearings/Seal/Lug Nuts
  • The Dexter Hub part # 8-285-9UC3 comes with bearings and seal but does not come with lug nuts. For that you would need part # 6-53 since the studs are 9/16 inch.
    view full answer...


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Info for this part was:

Installed by:
Jeff D
Expert Research:
Jameson C
Updated by:
Adele M
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Hannah L

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