building trailer axles

mark · 2008-04-03T21:01:01+00:00

My local trailer building supply house has "high speed stub axleassemblies" with a stub 4"long and 1/3/4"in diameter made so you canbuild your own axles. I assume they are designed to go into some typeof pipe or tubing and welded in place but what kind. The u bolt springhangers they sell are for 2 3/8"dia . This leads me to believe maybe2"schedule 80 pipe which is 2 3/8"OD but 1.90"ID. Is 0.015" play toomuch, should they be wrapped with shimstock? There is 2 3/8"tubingavailable but the ID is 1.749" so they won't fit that. The seller(princess auto) has no idea either. Thanks

Apr 03, 2008 28 Replies

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Bruce L. Bergman 18 years ago

Drawn Over Mandrel.

All pipe and steel tubing is made from strip stock that is folded into a tube and the seam is butt welded. The mandrel drawing process smooths out the welding seam left on the inside of the pipe for extra strength, and makes sure there are no burrs on the inside of the tubing.

For electrical conduit burrs on the inside are very bad, they cut the wire insulation and cause shorts. For telescoping tubing internal seams are bad, because they block you from sliding the next smaller tubing inside that one.

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mark 18 years ago

14 gauge sheet metal rolled up as a shim would work nicely then, it is 0.074". Doesn't this whole thing not make any sense. Why don't they make the spindles to fit commonly available pipe or tubing.

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clare at snyder dot ontario do 18 years ago

Drawn ove mandrel. It is electrically welded tubing that "thinks" it is seamless. Perfectly round bore with no weld bead - also known as structural tubing - in contrast to Sched 80 PIPE which has a discernable welded seam and is only "nominally" sized.

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Dan 18 years ago

Does this mean there is no such thing as seamless pipe?

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clare at snyder dot ontario do 18 years ago

No, there IS such a thing as seamless pipe, but it ain't cheap - and structural tubing is more likely to be DOM

Seamless (SMLS) Steel Pipe is made from a solid round steel ?billet? which is heated and pushed or pulled over a form until the steel is shaped into a hollow tube. The seamless pipe is then finished to dimensional and wall thickness specifications in sizes from 1/8 inch to 26 inch OD.

a seamless PIPE is manufactured, for example, from a billet of steel about 10 inches in diameter and 6 to 8 feet long. After heating to over 1000 degrees C., a hole is pierced through the center to form a very thick-walled tube. Hot rolling and cold drawing then progressively reduces the wall thickness and diameter of this tube until it is sized for the particular end purpose. Seamless is a costly method of manufacture; restricted both in size of outside diameter and in length.

Generally used as boiler tubing.

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Bruce L. Bergman 18 years ago

And no doubt other critical stuff like piping high-pressure hydraulic systems, high pressure refrigerant to water condensers (dump the heat to a cooling tower) or evaporators (process water chillers) or life safety uses like cylinder gases.

If you don't need it, don't specify it - or you have to pay.

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RoyJ 18 years ago

They use 1-3/4" stock because it is the smallest (read cheapest material cost) that will turn down to fit the 1.71 grease seal and bearing sizes that is standard on heavier duty hubs.

If I were > >> I was watching the other replies, no one seemed to pick up on the fact

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clare at snyder dot ontario do 18 years ago

Everybody talks about home built trailers self destructing. I've seen more factory built crap fail than the usually overbuilt home-made trailers. The home-made trailer might eat tires at a phenominal rate - but generally what I see is a lot better than the wall-mart / northern tool / home depot crap.

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Ignoramus22864 18 years ago

If there is his estate, then he is dead, how can he have liability?

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