What Bearing Diameter Is Used With the #84 E-Z Lube Spindle TRU74FR

Question

Question:

Hi can you confirm the bearing diameter on this replacement spindle

asked by: John

0

Expert Reply:

Hello John, I sure can!

The #84 E-Z Lube Spindle # TRU74FR uses the # L68149 (1.378" inner diameter) inner bearing and L44649 (1.063" inner diameter) outer bearing. I have included detailed measurements for this spindle below.

expert reply by: Jesse M

0

TRU74FR Dimensions
(click to enlarge)

Jesse M.

12/15/2025

Hey John, how did those bearing sizes work out for your replacement spindle? Knowing if the fit matched your setup could help others checking their axle specs too.

Answer 1

Hi Mark, You’re on the right track with that hub, and we can dial this in so everything matches up correctly. I want to preface my answer by saying we do not carry a spindle and hub assembly in the same kit. The part #AKIHUB-555-35-EZ-K is designed…

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Answer 2

Hey Oren, thanks for the information and welcome back! We do not have any replacement hubs with item #LM11949 inner and outer bearings so that would explain your difficulties tracking one down. I saw you were looking at the Trailer Idler Hub Assembly…

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Answer 3

Being off as little as it is, the hub may just be getting caught on something. Remove the hub from the spindle to make sure there is nothing that could be catching the inner bearing. Next, install just the inner bearing #L68149 making sure it gets…

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Answer 4

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 5

When installing a hub like the #AKIHUB-545-35-K on the #TRU84FR the hub is going to stop where the grease seal sits. If you look at the attached picture below, you will see the measurement marked F which is 6-1/2". This would be the stub length,…

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Answer 6

I have three spindles that are for a 3,500-lb axle and have the bearing dimensions you have listed. The only difference is the dimension for the grease seal is 1.75 inches, not the 1.795 inches that you have mentioned. Maybe you typed in the seal…

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Answer 7

There are a few different ways to make sure that you are getting the correct hub to match your spindle like the wheel bolt pattern, bearings, and weight capacity. You can either use a Digital Caliper #PTW80157 to measure the different sections of…

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Answer 8

The Electric Trailer Brake Kit - 10" - Left and Right Hand Assemblies - 3,500 lbs #AKEBRK-35 has a mounting pattern that is typical for 3,500 lb axles. The center on center horizontal measurement of the mounting bolts are 2-7/8 inches and…

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Answer 9

I would first check with the laws in your state as far as how many brakes are required for the gross vehicle weight rating (GVWR) of your tandem axle trailer. Some states require brakes on both axles of a tandem axle trailer. If brakes are allowed on…

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Answer 10

I wish there was an axle database that I could look your VIN up and see what you would need. You are going to need to measure your current axles in a few places to get the correct one. You will need to measure from hub face to hub face and then from…

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Answer 11

The hole in the end of your spindle is pretty standard. An EZ lube spindle would have the zerk fitting on the end, along with a hole on the spindle for the grease to come out and fill the hub like you can see on the #TRU74FR. There is nothing for a…

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Answer 12

We can get your trailer rolling again, and to get the correct replacement hub and spindle, you will just need to take a look at a couple things and get some measurements. You will need to take apart your current hub assembly and look at the bearings…

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What Bearing Diameter Is Used With the #84 E-Z Lube Spindle TRU74FR

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