Correct Wheel Bearings and Races for 3,500 lb Axle Based on Spindle Diameter?

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Question:

The brakes are a Dexter 8-207 I thought they were 8-201 but I went back and looked on 5 on 4-1/2, 10 x 2-1/4 inch electric brake. The 8-201 matches better than the 8-207 when looking at hubs on the internet. This is an old Triggs dual-axle horse trailer. I'm thinking that the axles are 3500 lbs. I've gotten different numbers of what the correct bearings are for this. The first is race L68111 / bearing L68149 and race L44610 / bearing L44649. The second is bearing L68149 / race L68111 and bearing L44649 / race L44610. The third is # 25580 and # LM67048, while the proper races are # 25520 and # LM67010, as per the answer from a previous question. The hub outer diameter is about 1.972 and 2.555 or close to. The spindle diameter is 1.059, 1.375, and 1.725. Which are the right bearings for this?

asked by: James S

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Expert Reply:

The spindle dimensions you gave match up with # TRU74FR. This spindle is for use with 3,500 lb axles. Based on this, we can tell you that the appropriate bearings are inner # L68149 and outer # L44649. The correct races are inner # L68111 and outer # L44610.

When replacing bearings, the grease seal often needs to be replaced as well, and the proper one for this is the Grease Seal for 3,500-lb Axles, # 58846. I have attached a help article on popular wheel bearings that you may find useful.

expert reply by: Kyle S

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Answer 1

It is a good idea to firstly make sure the trailer axle is not overloaded by weighing the trailer because uneven wear and inside wear is most likely caused by overloading the axle or misalignment. Trailer axles are manufactured with a slight bow in…

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Answer 2

The main reasons why trailer tires blow out is heat generated from under inflated tires and overloading the tires. Trailer tires should be inflated to the maximum psi indicated on the tire. A tire in the same size but with a higher ply rating would…

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Answer 3

Generally when tires bow out at the bottom, in at the top, that indicates that the trailer is overloaded. If you are within the 2,000 pound capacity though this should not be happening. If the axle was ever flipped upside down, like to gain more…

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Answer 4

There really isn't a solution we can provide aside from replacing the spindle since yours is damaged beyond repair. Since you have a 3,500 lb EZ lube axle the correct replacement spindle would be the part #TRU74FR. I recommend taking it to a shop…

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Answer 5

Bearings will be pretty tight on the spindle when they are installed. They should not be so tight that you have to really pound on them to fit but they can require a little bit of effort to get them to slide onto the spindle. When installed there…

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Answer 6

If you remove the hub and wipe away the grease on the spindle you can check to see if it is damaged. Look for an scarring, gouges, discoloration, or scoring on the spindle. If the spindle is damaged then the bearings won't ride properly and can…

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Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 9

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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Answer 10

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 11

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 12

Depending on how the trailer was made, there will be a few spots you can check to identify the axle. First, if the trailer was pre-made by a specific company, you may be able to find this information in either the paperwork or on a placard somewhere…

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Correct Wheel Bearings and Races for 3,500 lb Axle Based on Spindle Diameter?

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