How to Select Hub/Drums & Electric Brakes For Trailer
Question:
I need part#s for left and right electric drum brake assembly and the drums/rotors 4 brake assemblies and 4 drums. Also, do your drums come with inner and outer bearings prepacked? Thanks
asked by: Jason H
Expert Reply:
I'm sure we can get you a hub and drum assembly for your trailer but there's quite a bit of info needed in order to do so. To find the correct hubs you will need to take apart your current hub assembly and look at the bearings themselves; wipe away the grease and you should be able to see the part number stamped directly on them.
If you are unable to find them, you need to use a digital caliper and measure your spindle where the bearings and grease seal ride, like in the diagram I added below. You will also need to know the number of wheel bolts that are on your current hubs to make sure your wheels fit.
For example, if your inner bearing is 25580 (1.75" inner diameter), your outer bearing is 14125A (1.25" inner diameter), the grease seal has a 2.25" inner diameter, and you have an 8-lug hub, you would use the Trailer Hub and Drum Assembly - 7,000-lb Axles - 12" Diameter - 8 on 6-1/2 - Pre-Greased # AKHD-865-7-2-K.
Some hub and drums, like the example above, do come with the bearings pre-packed. Then for brakes, you need to know the weight capacity you need, the number of bolts for the mounting flange, and the inside diameter and depth of your drum. For example, the Dexter Nev-R-Adjust Electric Trailer Brake Kit # 23-464-465 are for 7,000 lb axles, measure 12" diameter x 2" wide (so that is the drum size they fit in) and fit a 5-bolt mounting flange.
I have added links below to our entire selection of hub and drums and electric brakes for you.
Products Referenced in This Question
Trailer Hub and Drum Assembly - 7,000-lb Axles - 12" Diameter - 8 on 6-1/2 - Pre-Greased
- Trailer Hubs and Drums
- Hub with Integrated Drum
- Pre-Greased
- Standard
- 25580
- 14125A
- For 7000 lbs Axles
- 1/2 Inch Stud
- 8 on 6-1/2 Inch
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- 17 Inch Wheel
- 17-1/2 Inch Wheel
- etrailer
more information >
Product Page this Question was Asked From
Dexter Nev-R-Adjust Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 7K
- Trailer Brakes
- Electric Drum Brakes
- Standard Grade
- Self Adjust
- 12 x 2 Inch Drum
- 7000 lbs Axle
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- Dexter
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: etrailer Electric Trailer Brakes - Self-Adjusting - 12" - Left/Right Hand - 5.2K to 7K
- Shop: etrailer Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 5,200 lbs to 7,000 lbs
- Shop: Trailer Hub and Drum Assembly - 7,000-lb Axles - 12" Diameter - 8 on 6-1/2 - Pre-Greased
- Shop: Trailer Hub and Drum Assembly - 7,000-lb Axles - 12" Diameter - 8 on 6-1/2 - Pre-Greased
- Q&A: Troubleshooting Electric Trailer Brakes That Hum But Do Not Engage Drums
- Shop: etrailer Rust-Resistant Electric Trailer Brakes - Dacromet - 12" - Left/Right Hand - 5.2K to 7K
- Shop: Easy Grease Trailer Hub and Drum Assembly for 5.2K - 7K Axles - 12" - 8 on 6.5 - Pre-Greased
- Shop: Trailer Idler Hub Assembly for 7,000-lb Axles - 8 on 6-1/2
- Q&A: How To Find Correct Replacement Hub for Trailer with 8 on 6-1/2" Bolt Pattern
- Q&A: How to Pick Out Replacement Hub for Trailer that Sheared Off Studs
- Article: Trailer Wiring Diagrams
- Video: etrailer Trailer Brakes - Electric Drum Brakes - AKEBRK-7-D Review
- Video: etrailer Trailer Hub and Drum Assembly Installation akhd-865-7-1-k
- Q&A: Does It Matter Which Wire is Power and Which is Ground When Wiring Electric Brakes
- Q&A: How Thick Are Electric Brake Shoe Pads and When Should They be Replaced
- Shop: Trailer Hitch
- Article: Most Popular Wheel Bearings
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer brakes
- Shop: Trailer Wiring
- Q&A: How to Measure to Determine the Size Trailer Brakes Needed For Hydraulic Drum Replacement
- Search Results: bearing buddy
- Video: etrailer Electric Trailer Brake Kit Installation
- Shop: Brake Controller
- Article: Trailer Tire Sizing
- Search Results: 25580
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: lug nut
- Video: Timbren Axle-Less Trailer Suspension System Installation
- Shop: Suspension Enhancement