Which Outer Bearing Mates with Inner Bearing LM67048 on a 4-Bolt Hub

Question

Question:

I have an older trailer with a tapered shaft. It is a 4-bolt hub. The inner bearing closest to the trailer is an LM67048. The outer bearing appears to have an inside diameter of 11/16 inches. I had a 3/4 id bearing laying around and that is too big so I know for sure it is smaller than a 3/4. I cant make out all of the numbers on the outer bearing, but it looks like an LM11 is the first four digits. The fifth digit appears to be a 7 but its hard to be sure...and the last two digits are not readable. Any idea what bearing I would need for the outer bearing? I did a search on your site using LM11 and the only bearing that came up was an LM11949 which appears to be a 3/4 id bearing and will be too big? Thank you,

asked by: John S

0

Expert Reply:

We have a 4-bolt hub that uses LM67048 as the inner bearing and an LM11949 bearing as the outer. That is the only hub/bearing configuration we have for an LM67048 inner bearing. It is typically a hub found in agricultural trailer applications. The hub is part # AH15450ECOMP if you want to take a look at it and see if it looks like your hub.

I pulled one of the LM11949 bearings from our warehouse to measure. When measuring bearings, you really need to use a dial caliper. A tape measure is not accurate enough. The LM11949 bearing measures .746 inches or 3/4 of an inch.

What is the bearing number on the 3/4 inch bearing you had lying around that was too big? What is the measurement between two caddy-corner lugs, measured center to center? Using a set of dial calipers, you can compare the measurements of your spindle to spindle part # TRU54FR.

expert reply by: Patrick B

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Answer 1

We have one bearing that has an inner diameter of .75 inch. For that you would want the part #LM11949. This bearing is typically only seen on agricultural hubs though. The inner bearing you need is part #LM67048. The closest seal we have to the…

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Answer 2

Based on the measurements you provided of your outer bearing you have the #LM11949 which is kind of an odd-ball bearing, and as such there are no hubs that we offer that use the #L44649 and #LM11949 bearing combination. You did not mention why you…

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Answer 3

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 4

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 5

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 6

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 7

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 8

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 9

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 10

The ALKO 4,400 lb axles use the same bearing sizes as the standard 3,500 lb alxes. If you want USA made bearings, I recommend the Bearing Kit #TMK52VR. This kit comes with the Timken brand bearings which are all made here in the USA.

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Answer 11

The absolute best cushioned equalizer that fits the dimensions you mentioned having would be the MORryde ALLTREK 4000 part #MR89DR as this is only option to provide vertical and horizontal cushioning. This would make a big difference and you'd be…

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Answer 12

The 07100 bearing number you referenced is an older bearing that has the same dimensions as #L44643. If both the inner and outer bearings on your existing trailer are the 07100/ #L44643, and the hub has a 4 on 4 inch bolt pattern, the correct…

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