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Holy shit, and here I was thinking how innovative this is.. it's ten years old!

Далеко не новый

I just learned about them yesterday, so I guess KZfaq figured I was interested. Applied Science's video: kzfaq.info/get/bejne/gcV-ksuQ0rHKXWg.html

sounds like air bushings ....the hydrolic motor oil is near zero friction too the crank /shaft floating in oil ...whats the application selling it to the military...= us for $$$$$$$$$$$

@@aceventura7064 An oil-bearing has a rpm limitation due to many factors including heat generated as the bearings move faster. An air-bearing should be able to reach RPMs that an oiled bearing could not. Just my thought.

@@valveman12 it seems you do not understand hydrolic bearings, except for when it is dry which over long periods can occur it is only in contact with oil or impuritys in the oil , you are hopeing that the air separates the to way different speed surfaces that may not be the case long term (out of the lab)

@@aceventura7064 If you say so...

@@valveman12 what is the application space?

I felt it too.

Oh I felt that in my chest

Radial Air Bearings on a _Previously_ Precision Shaft

I never realized that can come through a recording..

Aaaaaaaaaarg

@@TheRybka30 Good algorithm

Seriously. I've looked for video's of exactly this type of bearing and this never came up in an actual SEARCH. I was looking for magnetic, air and graphite/air bearings and never saw this one...

Yes

Pretty much advanced air hockey table Same system but huge precision

Lol

Dat shaft play.

Much like your spellcheck...

@@Penguin_of_Death i donyt halve spill chak

MrTurboturbine exactly What I thought 😂

can I be in a different room when it happens?

With a nice heavy flywheel (off balance) for science!

They call that friction welding 😂

spontaneous detonation.

It's called "Turbo" mode. Turn off A/C for Turbo. It's new and my car has it.

Lol i just watched that last night. Probably why this popped up in my recommended this morning...

The strange thing is that this video started to appear in my recommended videos about 2 weeks ago and popped up in the sidebar and recomended videoes all the time and i have just ignored it until now. Then Ben released his air bearing video (i have been subscribed to him for many years) and after watching that i finally checked this out as well. Almost as you wold think that the youtube algorithm knew that Applied science wold release his air bearing video two weeks before he did.... There must be a glitch in the matrix somewhere....

Hahahahaha lol

Brilliant!

Eventually BEER RINGS

Each of the 7 bearings flow 12 SCFH so the whole system flows less the 1.5 SCFH.

Shhhh this is secret reverse engineered technology from area 51. Currently they managed to make the antigravity work already.

Lol air bearings have been around for at least a century. They are heavily used in the machine tool cutting industry, for sharpening or making new milling machine cutters. I've used them quite a bit as a machinist, it's the only way to cut them unless you have a newer CNC cutter grinder. It's the weirdest feeling, moving a ten pound steel shaft like it weighs a half ounce and is floating in space...

Go and have a look at @appliedScience he demonstrates how to manufacture these bearings extremely cheaply at home.

@@TheExplosiveGuy that's interesting

The cutter grinders don't always have air bearings, mine has regular tapered roller bearings on the workhead and the linear motion is only by the table ways. Used for the same stuff but admittedly air bearing is better and fancier. My grinder is from 1943.

@Chris Russell I was only counting from the release date of this video. That's the numbers I have proof of.

u have seen this before trust me... it's the same principle as a hovercraft or a air hockey table xD

Idk but it is a very high pressure low volume application so not much probably.

Our products are based on 60psi input pressure. The fly heights are small, in the order of 5-8 microns. The bearings themselves are very low flow. See our www.newwayairbearings.com/catalog/radial-air-bearings/ radial bearing specification page.

Google is your friend.... For Thrust bearings, imagine the same thing with opposing pairs of flat shoes on either side of a shaft flange. Air bearings really need to have engineered opposing members -or be a continuous circular unit -to keep air leakage to a minimum, then as there is "near zero" play (within the elastic range of the housing material) there is reduced risk of shockloads causing shaft damage and housing fatigue (there will be more fatigue through cycling on and off, than under designed loading)..

@Will Swift well how come it was hooked up to the air?

Yes, we often run porous bearings using Freon as the bearing medium rather than air. This makes for a hermetic oilless contactless bearing system. It’s typically employed and larger air conditioning systems where centrifugal compressors are used.

If the compressor failed there is compressed air in the reservoir.

+J Corey Orava It could be a good thing that it locks down without air pressure, like 18-wheeler brakes.

Machines with air bearings typically have a pressure interlock that stops any motion if the air pressure fails.

Do you mean a machine that is micro or a machine for micro work? Air bearings become somewhat less effective at very small scales but if you are looking to build your own linear slides for a machine you can produce something like this yourself with sintered metals, you just wouldn't want to force it without pressure like in the video unless you could get a similar self-lubricating porous material.

I guess because graphite is too brittle to compress without turning into dust very quickly.

I wanna see if i can stick an air bearing on a 4 toothed flywheel for a bot for robot wars

@@osmacar5331 : Will you be able to feed it the air it needs?? always the problem....

+berker smith We have not applied our technology into an internal combustion engine. It is not that it would not work; we have just not engineered/researched it as a product development project.

+berker smith They're being used on microturbine engines. They work VERY well in that application. Bladon has a working model.

turbo shaft engines would seem a better fit for this given that they maintain consistent loads against the shaft, whereas reciprocating engines are going to be very peaky on bending loads. One reason we have to be very careful about type of propeller on aero- diesel engines. I am concerned about flight loads on these bearings though and failure modes if air pressure is lost.

60 PIS input pressure, the porous carbon is the restriction of the flow. The flow in in SCFH range. See following link for individual product flow specification: www.newwayairbearings.com/catalog/radial-air-bearings/

That is a great comment and you obviously have a great practical grasp on mechanics.

+fromkentucky There are various factors that determine air gap. Like load, surface finish, pressure, etc. Here is a design guide that can provide you with more information: www.newwayairbearings.com/products/w-profile-concave (scroll to the bottom of this page)

According to the vid, “less than zero”

Quite small actually I've seen them as small as a 1mm inside diameter. The only thing that you have to remember is the load capacity of the bearing is a direct relation to the surface area against the shaft.

Nursee Mike You can purchase air bearings by reaching out to our sales team. Here is the link: www.newwayairbearings.com/purchase/new-way-sales-and-support-team

Yes, we are working on using them in large gas turbines too. call us at 610 494 6700 and ask for Rick or Drew

@@drewdevitt thank you for the fast response

@@drewdevitt I was thinking about prototype of a micro jet engine for an rc plane as proof of concept because standard ball bearings last 25 hour's of engine run time before they need to be replaced so air bearing should and it will eliminate engine bearing service but as it is right now I am currently unable to purchase the type of air bearing required for the prototype engine due to lack of funding but in near future I will definitely give you guys a call and see if we can build it. Best regards

Try a foil bearing so so you do not need a separate air supply, just make sure they stay clean. Full-ceramic ball bearings are probably best for a hobby project though.

I know capstone microturbines use air/foil bearings, different construction but similar function

Air comes out of the working face only

I presume infinite as there is zero contact.

@@richardmiddleton7770 Try 130,000 rpm @20c assuming perfect zero contact...above that would be supersonic, or the air film would "cavitate", or the friction would increase dramatically...so the bearings could fail I assume. Also I have no idea of the pressure or flow rate and how much the flow rate goes up with rpm...so really your limit depends on those factors to, you have to be able to supply enough to keep up with the velocity(might be easy if the loss is nil). You could theoretically calculate a particle thick(unrealistic) air film and its velocity and flow rate if you had a cross section of the bearing face, and then factor in losses from the side...yeah this gets complicated lol

+Was Bigman (Wasbigman) For this demonstration, the air pressure was at 60 psi.

40psi

65 psi

Right you are, here is a video on balancing done at Hoffmann America; kzfaq.info/get/bejne/hLtmdJmEv8jMnZc.html

Yes, we offer them for balance machines, they work much better then conventional rolers with lower error motions

dathrevann shafting things. Obviously.

It wouldn’t be practical since you would need a compressed air source and good air filtration. They are great in industrial applications.

In fact, that's the opposite. You need a high pressure for it to separate the bearings from the shaft since there is no clearance between them. But you need a small flow rate since it's creating a very small gap between the two. (we're talking about 1 micron of play !)

Yeah, the air pressure would need to be at least as high as the side load (force) on the shaft divided by the surface area of one bearing. Idk about the flow rate.

Patrick Donohoe ok . On paper guillotines with an air table it needs only 5psi to float 120 lbs of paper. Thought it may be similar.

@@MagnetOnlyMotors the difference is that in this case the bearings are preloaded with very high pressure so that the shaft stays centered between them even when subjected to loads much higher than gravity. 10-20ppsi would probably be enough pressure to float the shaft against just gravity. I assume you can reduce the clamping force of the frame on the shaft and get the shaft to spin with lower air pressure and reduced sideload capacity.

Yeah, but still, if you have a engine to turn it, you should also have the engineering expertise to fit in these. Think about it, if made right, this could last forever, never needing any replacement parts, only power, and a clean filter. That could be very appealing to businesses. It would take no wear from start up or shut down like a lubed bearing would, and it has the gliding of ball bearings.

@@patrioticwhitemail9119 There's wear like you wouldn't believe the moment a piece of dust gets in there, a grain of sand will gouge through that graphite like butter. And the loading on these is limited by air pressure, you will never have your tractors axle on one of these. These are niche products, widely used in semiconductor automation and other ultra precise instrumentation, but they are in no way a generic replacement for good ol' ball bearing.

@@aleksandersuur9475 yeah. I can see that. Limited usage but extremely effective for what it can do.

probably 110 psi. ours run at 80 and have a 250 lb max load each - same bearing as the video.

Probably not much since the space between the shaft and the "bearing" is very small it requires little air. Probably a household compressor should be more than adequate. Just speculation tho

Yes, probably because I watched the air bearing video on Applied Science channel.

Thanks for your comment. There are fundamental differences between aerodynamic gas bearings as you are describing with the sandblasting technique and externally, pressurized gas bearings. so they are completely completely different sets of teachings and claims inthe patent literature. The basic idea of hydrodynamic or aerodynamic bearings were first described by Kingsberry and Mitchell, respectively in the United States in England at almost the exact same time.

No

www.nasa.gov/centers/glenn/about/fs14grc.html