What Axle Do I Have?

[Iplayfarmer]

Here's my trailer axle spindle (see picture). I'm ready to buy the stuff I need to add brakes, but I need to know what axle I have so I can order the parts.

The bolt pattern is 5 on 4.75 (based on the fact that from lug center to the center of the next lug is 2.8")
The seal is 1 7/8"
The inner bearing I.D. is 1 1/4"
The outer bearing I.D. is 3/4"

I'm pretty sure of these measurements as they were measured with a micrometer and the dial was right on for all of them.

I also measured the axle tube. It's 2 9/16". This one may be smaller due to the build up of rust and dirt.

Any help is appreciated.

 

[Diamondpilot]

I would guess they are 5,200# axles or 6,000# which use the same bearings but to be sure you need to list the bearing numbers.

The problem I see is these axles have been field modified it looks to me that part of the break backing plate is missing. The 3.5K axles have 4 holes and the 5.2K/6.0K axles have 5 holes.

Chris

 

[Iplayfarmer]

I would guess they are 5,200# axles or 6,000# which use the same bearings but to be sure you need to list the bearing numbers.

The problem I see is these axles have been field modified it looks to me that part of the break backing plate is missing. The 3.5K axles have 4 holes and the 5.2K/6.0K axles have 5 holes.

Chris

After reading your reply I went back out and pulled the other side of the axle to pack the bearings. I got the number of the outer bearing... 11945 by Hyatt. That last digit may be a 9 or an S. I posted a picture below for the whole forum to guess at it.

I don't think the backing plate is field modified. If it was, the modifier did an excellent job of making it look factory and made both sides look identical (see picture below). It's odd that there would be just the two holes, but I think it's factory.

There's another picture of before I pulled the hub off. That may or may not be helpful.

 

[schmism]

ive never seen 5 bolt 5K# or above rated axles. 3500# is normal for 5 bolt. which would also jive with the little spring pack of 3 springs

for reference here are my 6 on 5.5 bolt 5K# axles

 

[Skyco]

After reading your reply I went back out and pulled the other side of the axle to pack the bearings. I got the number of the outer bearing... 11945 by Hyatt. That last digit may be a 9 or an S. I posted a picture below for the whole forum to guess at it.
.

It is LM11949
What do I win?:licking:

-google pops up lm11949 immediately as a common axle bearing, nothing comes up on lm11945....:thumbsup:

 

[Diamondpilot]

I looked up a standard 3,500# axle kit and does not list that bearing #. I am at a loss on these. I am sure you guys are right, 5 lug = 3,500# axle. You have a odd balls set up for sure. First off it does not use U-Bolts and then the the brake tab only having 2 holes???? Its a odd ball deal that I think someone, maybe the trailer manufacture, has modified to meet the needs.

Good luck with this one. Its going to be a challenge and may cost more in the long run than just buying new braked axles for the thing.

Chris

 

[Iplayfarmer]

...Its going to be a challenge and may cost more in the long run than just buying new braked axles for the thing.

Chris

That would be my luck.

 

[FlaDon]

I'd be real worried about that setup. Almost all 3500 lb axles will run a bigger outer bearing such as L44649/L44610 ( Timken Set 4 ). The LM11949 you have were used by Gravely on the front of their 4-wheel tractors. Set 4 has a 1.0625" bore while yours are only .750". Load capacity is 6474 for Set 4 while 6362 lbs of dynamic load lbs for the LM11949. Could those axles be only 3000 lb rated ones as that is what a search for their use would show?

 

[Diamondpilot]

I am sorry for the bad news but a brake kit for one axle runs around $250. Now that includes the wiring, break-away kit, battery, 2 backing plates with shoes and springs, and the drums. You will need someone to remove the current mounting tabs and weld on new ones to spec. I can get new axles for about $200 to $250 with the brakes depending on options.

With this being odd ball I am not sure what the cost would be but you are in for.

Chris

 

[FlaDon]

I am sorry for the bad news but a brake kit for one axle runs around $250. Now that includes the wiring, break-away kit, battery, 2 backing plates with shoes and springs, and the drums. You will need someone to remove the current mounting tabs and weld on new ones to spec. I can get new axles for about $200 to $250 with the brakes depending on options.

With this being odd ball I am not sure what the cost would be but you are in for.

Chris

If you didn't mind the fact that most come with Chinese bearings, you can get them as drilled axles and new springs in a 3.5K rating in that price range with the more standard 5 X 4.5 brake drums.