Selecting Correct Replacement 12 x 2 Electric Brake and Drum Assembly for 6000-lb Axle

Question:

I need to order new electric 12X2 inch brakes and drums for my trailer. some specs show 2 1/4inch axle seal and some show 2 1/8inch seal. What do I need to measure to order the correct part? Thanks

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Expert Reply:

The best way to identify the correct replacement components for your trailer is by using the part numbers from your current inner and outer bearings and grease seals (or a spindle measurement where the seal and bearings ride). It is possible to measure the spindles to obtain grease seal dimensions (location B on the photo) but this process requires care and a precision digital caliper like # PTW80157. You will also need to confirm the diameter of your wheel studs. We already know your brakes are 12 x 2 and that your axles are 6000-lb rated. Please refer to the photo provided which shows where to find the part numbers and where to measure your spindles to obtain the grease seal inner diameter.

I have provided a link to our product page for integrated 12 x 2-inch hub/drum assemblies, with the 6 on 5-1/2 bolt pattern, suited for 6000-lb axles. The part you referenced, Dexter EZ-Lube Trailer Hub and Drum Assembly, part # 8-201-5UC3-EZ, uses this 6 on 5-1/2 wheel bolt pattern. This part is intended for 5200-lb axles and includes the hub/drum, bearings (inner bearing 25580 and outer bearing LM67048) , races, seal, grease cap, wheel bolts and lug nuts.

If your 6000-lb trailer axle uses inner bearing 25580 and outer bearing 15123, and EZ-Lube spindles, you can use part # 8-201-9UC3-EZ. This part also includes the hub/drum, bearings, races, seal, grease cap, wheel bolts and lug nuts. I have linked a product review video for this part.

If your brakes use a 5-bolt mount (which is most likely) you can use part # AKEBRK-7R-SA for the right-hand side and part # AKEBRK-7L-SA for the left. These are self adjusting brakes that do not require manual adjustment. Another 5-bolt option is the Hayes/AL-KO part # 185150 for the right side and # 185100 for the left. Note that these Hayes 12 x 2 brake assemblies can be used with 5-bolt flanges.

We recommend that you use new hardware to install the brakes. You will need either 4- or 5-per wheel of each of the following: nuts, part # 38N; lock washer, part # 38LW; and bolts, part # 7-5.

I have also included an article concerning packing trailer bearings. We offer a bearing packer to simplify the process, part # L70025, and we also offer bearing grease, such as part # L11402. An article regarding identification of wheel bolt patterns is also provided.

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Adam R

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