Why do Trailer Axles have an Upward Bow In Them

Question

Question:

Is the square tubing axle should have that bow upward in the middle?

asked by: Rocky K

0

Expert Reply:

Trailer axles typically have the bow you mentioned in them to help compensate for the vertical load they bear and still have proper wheel camber. This way when the load is put on them the axle will flatten out and the wheels will be aligned properly.

Square axles are a bit of a wild card though as they aren't as standard as the round tube axles. I have seen totally straight ones and I have seen curved ones.

expert reply by: Jameson C

0

Answer 1

Trailer axles are supposed to have a bow in them that faces down towards the ground. With the weight of the trailer normally this flattens out slightly and gives you the correct camber you need. Whoever flipped your axle should have used an over…

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Answer 2

A trailer axle should actually be bowed upwards in the middle and not downwards. When the trailer is loaded with your boat, that upward bow will flatten out and your tires will make even contact with the ground. The downward bow of your axle should…

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Answer 3

Trailer axles are designed to have the bow in them that you described. This allows the axle to flatten out when it is loaded and have the proper camber. If you have axles that are rated for considerably more than what the trailer will ever have…

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Answer 4

Unless something is putting voltage on the brake output circuit of the trailer wiring the brakes of the trailer wouldn't be activated. So if your trailer wasn't plugged into a tow vehicle the trailer's brakes should not be activated…

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Answer 5

The easiest first step here would be to try the trailer on a different truck, and see if the same problem occurs. If the trailer brakes are free until the trailer is plugged in, I suspect that something is mis wired. I would suggest examine the…

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Answer 6

I do have options for you but we would not have a direct replacement for your 3,500 Lb Lippert Axle. Instead, we have the Timbren Axle-Less Trailer Suspension System part #ASR3500S05 or part #ASR3500S06 which as the title states is an axle-less style…

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Answer 7

An oil seal like Redline part #9103309 installs in the back side of the hub (the side nearest the trailer's frame) with the sides or "legs" of the seal inserted into the hub's bore. This means that the flat metal surface of the seal…

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Answer 8

If your horse trailer has electric drum brakes like #23-105 then adjusting them is fairly simple. I have included a link to a video to the right. If you fast forward to about the 4 minute mark you can see how our installer adjusts the brakes.…

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Answer 9

When installing the castle nut on the end of the spindle, there is no specific torque rating. The nut is ran down until there is no side to side play in the hub, and then backed off to the next notch in the castle nut so the retainer can secure the…

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Answer 10

The castle nut on a trailer spindle should not be torqued down tight. This could cause excess pressure on the bearings that could result in heat-related damage to the bearings or spindle. The best way to go is to tighten the castle nut until it…

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Answer 11

To tighten the brake adjuster, you'd use an adjusting tool like #W80630 and spin the wheel upwards. To loosen or contract the brake shoes, you'd rotate it downwards, as shown in the video I've linked you to. You'll need to fast…

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Answer 12

Your 5200-lb Lippert axle 121066 uses inner bearing #25580, outer bearing #LM67048 and grease seal #GS-2250DL. For all of these you can use kit #BK3-300. I also recommend bearing packer tool #ALL647646 for a cleaner method of packing the new bearings…

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Why do Trailer Axles have an Upward Bow In Them

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