Where does a Brake Flange need to be Welded on a Spindle

Question

Question:

I need to weld a brake flange onto my spindle. What is the critical dimension I must hold for proper location of the flange? I am installing 10 electric brakes onto a 3500lb axle. Thank You

asked by: Ron M

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Expert Reply:

Welding a brake flange on a spindle is not something we recommend most people doing. Most spindles have these welded on at the factory with specialized jigs and higher precision welding equipment that what even experienced do-it-yourselfers have.

The flange needs to be welded on concentric and square. Square meaning the flange must be a true 90 degrees from the spindle and concentric meaning the gap around the spindle must be the same 360 degrees around. If not, the brakes will not wear evenly and will cause reduced braking performance. If not at the right depth the brakes will not be as effective and again, wear unevenly.

We usually recommend replacing the spindle with a new spindle that has the flange welded on from the factory. We do have a spindle for 3500 pound axles with a flange welded on, part # TRU74FR. You would need to make sure to have the proper drum and bearing kit.

expert reply by: Patrick B

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Answer 1

EZ Lube spindles are generally preferred over Bearing Buddy setups. The EZ lube allows you to insert grease down the middle of the spindle easily which is basically the best option aside from removing the hub and taking it all apart and cleaning and…

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Answer 2

As I do not see that we currently have a trailer axle with a 93" hub face to hub face you are going to be best to have the brake flange welded in place. To ensure this is done properly you will want to find a trailer shop with a jig to ensure…

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Answer 3

Hello Rene, thanks for reaching out. It is pretty typical for RV manufacturers to use axles that are not rated for the full GVWR. They say this is because 10%-15% of the camper weight is on the hitch instead of the axles. They will put the bare…

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Answer 4

So the short answer is no, there is nothing you can do to your current mounting plate to make another braking assembly fit your current setup. What you have is pretty unique, and when the team and myself took a look at it we were all in agreement…

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Answer 5

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 6

Yes, brakes can be added to your trailer and I've linked an article to help with the parts you'll need. The first thing you'll need is the brake mounting flanges welded to the axle, like you mentioned. The correct flange is #4-35 however…

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Answer 7

There is a special jig required to weld on brake mounting flanges such as #4-35. The flange needs to be welded on concentric and square. Square meaning the flange must be a true 90 degrees from the spindle and concentric meaning the gap around the…

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Answer 8

If your trailer axle doesn't currently have brake mounting flanges you have a couple of options, one of which is to simply weld on flanges like you mentioned. A brake mounting flange needs to be welded perfectly square and concentric, which…

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Answer 9

To weld on a brake mounting flange such as #4-44-1 it requires a special jig and someone with experience in welding on brake mounting flanges. They have to be perfectly square and concentric and if off just a little bit it can lead to all kinds of…

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Answer 10

Hello Jerry, cool car! I see you were looking at the DeeMaxx Disc Brake Kit #DE42FR. This is a disc brake kit intended for a trailer with a standard 3,500 lb axle. It has slip-on rotors that will work with an idler hub for a 3,500 lb axle like part…

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Answer 11

I recommend checking out the Timbren Silent Ride Suspension #TSR7000T04 for your 2016 EZ Loader trailer. This will allow you to bolt the suspension to the trailer rather than having to have frame hangers welded on. It also uses a rubber spring…

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Answer 12

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Where does a Brake Flange need to be Welded on a Spindle

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