I don't need these, but it doesn't stop me from wanting them.

@ddegn

3 жыл бұрын

I know I need them, I just haven't figured out why. They're the perfect solution. Now I just have to find the problem.

@user-df4qj4lm8e

3 жыл бұрын

Me too

@TheExplosiveGuy

3 жыл бұрын

I'm doing my best to think something up🤣, these are awesome. I wonder how they compare to a ball screw system...

@ddegn

3 жыл бұрын

@@TheExplosiveGuy "I wonder how they compare to a ball screw system..." Under a comment by @Christian Barnay is a reply by @Bala K. Here's what @Bala K wrote: "Believe me, yes. We switched from bulky ball screws to Planetary roller screws with reduced size and dramatic performance. High thrust forces with screw diameters almost half of ball screws" There's some additional information in that comment thread. You might want to find it. As I write this the comment has 8 replies. I'm going to follow the links in that thread myself.

@TheExplosiveGuy

3 жыл бұрын

@@ddegn well thank you kind stranger😁, I'll be looking as well.

"Sir we've finished the Planetary roller screws, but we're 8 million under budget" "Whelp, if you don't spend it you lose it, give it all to marketing"

@gabewhisen3446

3 жыл бұрын

Exactly

@mant1ss81

3 жыл бұрын

friction will be striking

@thermionicemission6355

3 жыл бұрын

It wouldn't be the youtube comments section without negativity and morons.

@Bartooc

3 жыл бұрын

They already have high res cad models from development so why not use it for promotion? It isn't only for YT, this would be show in all kind of expos.

The graphic artist is just as brilliant as the object!

@ihydf

3 жыл бұрын

I dunno, the way he put the planet gears in would have sheared the teeth off the ring and planet gears ;)

@lonetraveller5843

3 жыл бұрын

other than the sequence of installation, everything is brilliant.

@vernacular1483

3 жыл бұрын

Not really. The main lead screw doesn’t move in relation to the collar when the animation rotates.

KZread: It's been a long day, want to unwind by learning about Planetary Roller Screws? Me: I don't know what those are.... KZread: they have high axial stiffness Me: say no more...

@originalzo3873

3 жыл бұрын

Yes yes yes i pissed reading this because you are right

@buddyclem7328

3 жыл бұрын

"That's what she said!" meme.

@jamesharrell4360

3 жыл бұрын

This is exactly what I needed... *Unzips*

so, guess what's getting saved to my Powered Exoskeleton playlist

@Owl90

3 жыл бұрын

lmao, too good

@BigEvy

3 жыл бұрын

Hi there , what part of the suit would you use this with ? Are you thinking in regards to extending and retracting limbs ? it would definitely work , however you would need a complicated system of drivers and bearings to allow for the rotating shaft to turn freely. I personally think hydraulics or pneumatics would be a better option because of their relative simplicity. Great idea though ! If you got it to work , it would probably be very strong and reliable , just heavy.

@nom6758

3 жыл бұрын

@@BigEvy both of the alternative options you chose would have too large of components to properly place movable parts on a reasonably size humanoid shaped robot.

@BigEvy

3 жыл бұрын

@@nom6758 really? That's too bad. I have seen some tiny cylinders, but the pumps and power supply would be a challenge I guess. I think there's some footage of a powered suit online , I don't know what it uses .

@Badspot

3 жыл бұрын

The problem is they're not back drivable and would require an external torque sensor. A power failure could result in being trapped in the suit, a software or sensor failure could result in severe injury.

I use them 20 years ago on high precision équipments under high loads, very good results!

wow, i'm impressed, never thought of it being used like this.

Bloody Brilliant! Good work on the graphics too!

From the engineering point of view, it's just beautiful to watch!

The music implies this is what Ethan Hunt would use in his Bridgeport.

@elitearbor

3 жыл бұрын

Machine: Impossible.

@Ziegeri

3 жыл бұрын

I was thinking this is some new superhero.

@caseycappoen251

3 жыл бұрын

"clap clap"

Ok, you've got my attention.

@jaythomas3180

3 жыл бұрын

The movie trailer music is the mvp here.

Fantastic video

I've seen a good number of comments comparing similar systems. Just to clarify a few things on bearings and planetary gears. Ball bearings use spherical spacers (balls) to isolate the internal shaft from the casing. These balls are held in place with a collar to prevent them from moving out of position, usually as a result of side loads. The balls rolling against the internal shaft and outer housing produce very little friction. Most of the resistance and heart generation comes from the collar that surrounds the bearings themselves. Roller bearings are nearly identical in form and function to ball bearings. They use cylindrical rollers instead of balls to isolate the internal shaft from casing. Roller bearings are usually more expensive, but can outperform ball bearings because they are linked together only at the ends instead of being partially encased in a collar. Similar to ball bearings, the rollers produce little friction from rolling compared to the limits holding them together but, unlike ball bearings, you can lengthen a roller without needing to add more sections of rollers. Planetary gears are even more fun. They are much more expensive to produce, but don't necessarily require anything to connect one 'free' gear to the next because they all must rotate with the internal shaft and the casing. Gears under load rolling against each other do create more friction than a ball or cylinder, but they don't require supports with joints under load with pins that slide against each other. There are scenarios where a roller can be more efficient, such as when there is no or little side load, but properly manufactured gears will edge out in terms of friction in most cases. As for transfering load, things get much simpler. A ball bearing can transfer load along a much smaller surface than a gear, and a flat roller (unless angled, but that requires significant sliding motion in addition to rolling) cannot transfer any load. Even giving the ball bearing a Generous 30% effective contact surface per collar housing, you still need to use several of these housings to distribute force along the length of the shaft. If the in line, ball to ball, linear, effective surface contact area along the shaft is also a Generous 30%, you end up with a combined contact area efficiency of 10% compared that which you would get from an equivalently sized, planetary gear system. Ideally, you would be able to make a device 1/9th the size with the planetary roller screws, though imperfections and costs would make smaller systems economically unviable in my opinion. I haven't done the math to give any real approximations, but that smaller size should result in lower inertial resistance to momentary movements, and the higher contact area should allow for higher precision and resistance to backpressure. Planetary gear systems are also excelent force multipliers, so you could design the system such that 10 revolutions of the shaft only result in a single 'step'. You have no idea how badly I want to test a system like this directly against its counterparts. I don't think it will ever replace the more common roller bearings for most tasks where cost is more valuable than space, but I can imagine extremely high precision or high load functions would make these systems worth the increase in price.

@yoannmonterymard5766

2 жыл бұрын

To replace a bearing like you said, you would need a zero-lead roller screw. It's possible, incredibly compact and used in some very niche applications. Bearings still have good days ahead of them :-)

This could have been a alternate MCU dimension where Thanos was crushed by roller screws

@legrandex

3 жыл бұрын

[super hero noises intensify]

What a clever contraption.

Thank you for video. Counter roller could ensure positioning accuracy within clearance (free local wear correction and analysis) at cost of speed;)

@yoannmonterymard5766

3 жыл бұрын

@Piotr Lenarczyk Hi Piotr, in fact, alternative standard solutions exist. You can either have oversized rollers to have a backlash free mechanism, or split nuts to have preloaded screws for the most demanding applications regarding stiffness and susceptibility to load direction changes!

That's rather clever. I would imagine that the performance gains relative to conventional mechanisms grows exponentially with size. So long as you have the spare available torque for the beefier mechanism, you could get an absurd output. In fact, with a few adjustments, you could probably rival midrange and up hydraulic presses. Also, it looks absolutely amazing. It would be cool just having a working replica as a display piece.

@yoannmonterymard5766

3 жыл бұрын

Indeed, it does replace hydraulic cylinders in numerous applications. You can find big roller screws on servopresses up to 1000 tons and more.

We have had gears since Archimedes and now still people find new ways to use them and put them together. It's amazing.

@unitrader403

3 жыл бұрын

seeing this comment i wonder if you ever heard about Archimedes II, a guy from australia who turned the Tube instead of the Screw

@unitrader403

3 жыл бұрын

wasnt sure if i were able to find the related video again quickly, but here it is: kzread.info/dash/bejne/X5qpkpV_XazHmJs.html

WHAT A BEAUTIFUL MOMENT... And I'm here - you come in too

This is really cool!

I love the T2 Judgement Day-esque music... PLANETARY ROLLER SCREWS DUNN DUNN DUNN

@honzothesloth8075

3 жыл бұрын

BWAAAAUGH

I now have a positive impression of these devices that I was previously unaware of. Maybe This Old Tony can make a set to drive his mill table and head.

@grahamphillips57

3 жыл бұрын

underrated comment

You should talk to Thompson Couplings, a high torque self aligning CV joint manufacturer in Australia.

Now that looks cool

Looks very good.

I’m upgrading all my screws to these.

Great idea.

Oh shit, this is what I am finding, a good product. Thank you for your sharing.

These computerised design videos of engineering products are better than a SC-FI movies. Space 2020 never looked this good. And it's educational to boot..

great improvement

@Ewellix

2 жыл бұрын

Glad you think so!

Everything seems perfect in CAD animation with bodies that don't care about collisions (see 00:50 rollers teeth and helix passing through the outer ring teeth and helix). I would be much more interested in an actual demonstration of a physical prototype to see if the movement is really as smooth and fast as pretended.

@balak7161

3 жыл бұрын

Believe me, yes. We switched from bulky ball screws to Planetary roller screws with reduced size and dramatic performance. High thrust forces with screw diameters almost half of ball screws.

@holdilocks

3 жыл бұрын

@@balak7161 It does look like there is more contact than the tangent points of ball screws. Would there be a continuous lubrication system needed?

@evolutionCEO

3 жыл бұрын

That's it. the whole world can be brought to a stop with nothing more than cartoons as a basis. empirical evidence of the work in actual use, is what's required.

@ironfox2778

3 жыл бұрын

This video is just a demonstration of the working principle behind planetary roller screws. The concept of these devices is nothing new and they have been used for various applications over the past several decades. Although their application has been somewhat limited for various reasons, they have been proven to be great assets. If you want to see a physical demonstration of a planetary roller screw here's a link: kzread.info/dash/bejne/ZIGexM2vZdO-krg.html skip to 00:30 to see it moving.

@rjvepr

3 жыл бұрын

@@ironfox2778 nice work. I just like how kitchen theorists shut up when see real proofs.

I don't know why but I would love to see a scaled down version demonstrated on a super-stable 3d printer.

@tylergarza8695

3 жыл бұрын

That would be one incredibly expensive and overpowered 3d printer.

@akzorz9197

3 жыл бұрын

I was just thinking... how does one get this for their Z?

@mtraven23

3 жыл бұрын

@@akzorz9197 I don't think there is much to be gained on a 3d printer (over ball screws). and the balls screws are gonna be considerably lighter (fewer components). I would like to see if I could print a model of one of these, just to be able to hold it in hand & play with it. If that goes well, I am gonna try to turn one of the lathe. It wont have the precision a commercial one would have, but i think it''ll be a fun project.

Perfect 👍

@Ewellix

3 жыл бұрын

Thank you! Cheers!

I like planetary roller screws.

Got my attention.... I know at least two machines still running elmor drives, replaced last year and already wrecked due to high cycle times/constant running. Travel distance, speed and load constant.

Ingenious.

How does it compare to the ball screw coupling.

I don't know why, but I like this

Holy crap, this is exactly what I was building as the extruder for my 3d printer.

Imagine getting a corner of your shirt stuck in one.

@kinzieconrad105

3 жыл бұрын

And must stay super clean screws collect dust like lots of it.

So what is this, some kind of heavy-duty linear actuator?

I can just about operate a tin-opener, but I love shit like this.

I wounder how they'll rack up against acme tread for cnc work

no idea what these are, but i'll take 4 of 'em

@DisorderedArray

3 жыл бұрын

If you want something to accurately go up and be stiff, these are what you need.

@yourlocaltoad5102

3 жыл бұрын

@@DisorderedArray I thought viagra is the thing to use in situations like that.

@oscartattoo3910

3 жыл бұрын

@@yourlocaltoad5102 ba-dum-tssss

@dudodudo8372

3 жыл бұрын

@@yourlocaltoad5102 viagra is out, planetary roller screws are the way of the future

@dare21magine

3 жыл бұрын

Just got one of those for my penis implant.. 100% would recommend

Engineering at his best

I need some of these for my 3D printer.

Can't wait to see them hold planets in orbit.

This is good work in space only!

Yes, that is absolutely delicious.

@Ewellix

3 жыл бұрын

It really is!

Идея интересная. Очень. Для прецизионных приборов и лабораторных условий.

@witaliy1980

3 жыл бұрын

Износ резьбы будет просто бешеный из-за значительного уменьшения площади соприкосновения. Пока что лучшим способом после гайки остается только прецизионная шарико-винтовая передача

@user-bv6oh9kr4b

3 жыл бұрын

@@witaliy1980 В обычной гайке трение скольжения, а тут трение качения. И в этой гайке суммарная площадь витков сильно больше.

@rimasg1652

3 жыл бұрын

Цементировка убирает все ети проблемы:)

Тут смысл в уменьшении передаточного числа. Если гайка за один оборот сдвинется на один виток резьбы, то данная муфта при одном обороте внешнего корпуса сдвинется на столько витков резьбы, насколько число зубьев зубчатого венца корпуса(за который цепляются зубья маленьких шестерёнок) больше числа зубьев на этой маленькой шестерёнке. Если допустим число зубьев корпуса муфты в семь раз больше числа зубьев шестерёнки, то за один оборот корпуса муфты она сдвинется сразу на семь витков резьбы.

@nocox.

3 жыл бұрын

Ну вот , а я сюда из тик-тока и у меня лишь один вопрос был - Что тут происходит?)

Video liked for no reason!

Is this better than ball screw nut?? I would like to try one for my application. But I will need left and right threaded leadscrews.

@axeman2638

3 жыл бұрын

I think that's the objective of making them.

I learned this concept chasing submarines. Ring, Sun, Planet gears?

What do you have against a tanium nut? The fact of the matter is that threaded rod was spinning too. A nut would work since that's the case.

Awesome

whats providing the power to turn the planetary scews?

what's the advantage over a regular nut? On a regular nut surface contact between the screw threads and the nut is larger than in the roller screws case so what's the advantage? It seems to me the regular screws are more rigid/stiff than this. Is the advantage no backlash? If so how is it achieved?

Interesting mechanism, great animation< what's it for again??? Oh yeah did you know looped music was invented to drive us all insane???????????

This seems much better than linear bearing sleeves on rods for 3D printer z axis screw.

I don't know why I'm watching this but at least I know about planetary roller screws now

Ive got to take a closer look but I believe something like this is used in our big mixers at work that were made by AMF and are pretty old.

@douro20

3 жыл бұрын

Yes. Planetary roller screws were first developed back in the late 1940s.

@yoannmonterymard5766

3 жыл бұрын

@@douro20 The invention is indeed from the late 40's, and the "start-up" created by its inventor (Carl Bruno Strandgren) was acquired and developped in a branch of SKF group, well known for rolling bearings. This branch was divested by SKF in 2018 and is now Ewellix :-)

@ThisOldTony - I miss your content - how about one of these

dose it fix back lash ?

Wonder how these would perform on a CNC mill running at 500+ ipm? Would be a good replacement for ball screws on a large waterjet though.

@yoannmonterymard5766

3 жыл бұрын

These roller screw do perform quite well in almost all applications where ball screws are used. Their price is slighlty higher than ground ball screws though, as those rollers are much more expensive to produce than balls. So they are generally reserved for applications requiring more compactness (like on robot arm end) or speed/lifetime for very high duty applications like plastic injection presses, servo presses, high end hexapods, etc...

this feels more like a rick & morty interdimensional cable clip

@Bibibosh

3 жыл бұрын

Yes I have to go back and watch

Man that really looks impressive! What happens when you reach the end?

@yoannmonterymard5766

3 жыл бұрын

When you reach the end, the nut disengages from the shaft, but nothing falls apart, as opposed to a ball screw. You can just put it back in place with a minimum of care!

So this replaces a hydraulic ram and cylinder? Or rather a pair of rams in opposition. Nice idea.

Is this better than worm gear?

Is it backdrivable?

where the music from, reminds me of hawken

This type of linear actuator would outperform just about any other actuator when used to drive YoutTube likes if applied to a video with exciting music and arbitrary CAD.

Cool

The strength of this system would be massive. Planetary reduction gearbox systems are high torque output. Anyone know if this method has exploration/ core drilling applications?

So many interesting specs were absent in this video

@JohnDoe-ce2wl

3 жыл бұрын

but you got dramatic stock soundtrack, that'll have to suffice ;)

Everything works great in a computer simulation! How much thrust force can it handle compared to a ball screw????

@yoannmonterymard5766

3 жыл бұрын

If you compare to a ball screw, it's very much about the size you consider. You can often get about 2-3 times more peak force on a given screw diameter compared to a standard ball screw!

Interesting design. You get speed reduction and torque increase as a consequence. The increase in the contact area of the worm-shaped planetariums gives the unit great durability, this, together with a well-chosen material, provides perfection in the design. A question. How do you get the motorization of the system? who moves it? Maybe that was missing from the video. Thank you very much and greetings.

@yoannmonterymard5766

3 жыл бұрын

The motor can be driving the mechanism in two ways. You can either have a motor coupled on a machined end of the shaft. You make the shaft rotate, making the nut translate (you then have to avoid rotation of the nut by guiding it or the part it is mounted in). The other way is to have the nut driven by the motor, either by gears or pulley-belt system, then the shaft will translate and push/pull what you need it to. The rotation of the shaft or it's linked part will be needed then. Hope it's clearer!

@walteradrianlemus246

3 жыл бұрын

@@yoannmonterymard5766 Excellent. It looks like a very reliable unit. We know that in every epicyclic train, there must be a driving element (which in this case is the center), a driven element, and one that is stopped or braked. In this unit, what is the element that is braked, and how do you stop it? Thanks

@yoannmonterymard5766

3 жыл бұрын

@@walteradrianlemus246 Hi, in fact, here two cases are possible. You can drive the shaft and make the nut translate. The nut then has to be integrated (by bolting in this example, or with keyway with another standard design) in a housing that is blocked in rotation. In industrial machines, considering the loads to be applied and countered, ball or roller profile rail guides are generally the right choice. Some examples of such guides here: www.ewellix.com/en/global/products/linear-guides/profile-rail-guides The second case is that you make the nut rotate, with a gear or pulley/belt and then the shaft translates. You then have to avoid rotation of the shaft with a proper machined end or a linked part (splines, keyway...)

Some genius neckbeard is turning one of these into an industrial fleshlight as i type this

How do i transmit power to the "nut" instead of a bolt? What if i want to mount a motor on the moving part and not on base screw housing? Not sarcasm, sencire question

@985476246845

3 жыл бұрын

mount the nut on a gear to anorther gear connect that to a motor?

How you deal with the debris?

@yoannmonterymard5766

3 жыл бұрын

Standard wipers can be provided to avoid the ingress of the bigger particles, but overall the system is very tolerant to dust (to some extent of course). Lubrication health will be the most important.

What benifits do these have over hydraulics and what advantages do hydraulics have over these

@yoannmonterymard5766

3 жыл бұрын

Hydraulics will still be the way to go for either extremly compact applications like most of electro-hydraulic power tools or for very large pressing applications like more than 1000 tons. For all others, the shift is coming... The main advantages reside in the cleanliness, absence of leakage, energy efficiency, and controllability/precision/repeatability of the systems

RIP those who can't afford normal ball screws

@nonconformist4802

3 жыл бұрын

Yeah I am one of them, way to expensive in my country.

@martinjones6694

3 жыл бұрын

its not a matter if you can afford it or not, its if you need that level of accuracy it will give. would i bother of it was for a desktop 3d printer? no.... if i was building a laser range finder to pinpoint the location of a spaceship going to mars... then yes....

@hibahprice6887

3 жыл бұрын

@@martinjones6694 But what about cnc milling machines? There, the accuracy is 0.001 mm. In addition, Linear Bushings allow the use of higher machining conditions, and their rigidity is higher.

@danieljonsson8095

3 жыл бұрын

@@hibahprice6887 the accuracy of a cnc mill depends on the accuracy of the parts that make up the machine. The 0.001mm is probably true for some machines but it’s not some universal thing. There’s plenty of much higher. Tormach had a 0.0001mm mill as an example. Most home shop cnc machines don’t have more than .1mm accuracy even if the software used often lets you request a higher precision. But you setting a requested dimension doesn’t mean the machine is actually able to produce that. The same is true for 3D printers. Marlin, a common firmware for printers allows for your code to have up to 0.0001mm precision. But no 3D printer can actually produce anything like that. Even the best commercially available printers I’ve seen have at best 0.02mm precision for z and 0.01 for x and y. But even that is in precision for the printing itself. Plastic not being entirely rigid and significant thermal expansion throws that measurement off so you’re more likely looking at a 0.1-0.05mm accuracy for a final product. That being said. For these screws. I doubt that they will replace ball screws in precision machines. The reason ball screws are used is not only because of the precision but also because of their low friction. These have metal rubbing against metal the entire length of the each of those screws. That’s going to be a lot of heat that needs to be cooled away if temperature is to remain constant so that measurements are not thrown off and take accuracy with it. It’s an interesting design could be an alternative in some situations. But it’s not going to be for precision cnc machines.

@hibahprice6887

3 жыл бұрын

@@danieljonsson8095 I am following the project of a homemade granite CNC, where a person uses linear bushings, they have all the advantages over other types, and they are not so expensive .. You can forget about 0.0001 accuracy, any machines will bend at least 1 micron from temperature conditions, load , and so on .. It is unrealistic to calculate, if we talk about home-made CNC, then such a solution is the most optimal, we have them available at a price, there are almost no analogues

seems to possibly be a high wear item based on the surface speed of the mating surfaces

@yoannmonterymard5766

3 жыл бұрын

the wear is very minimal in fact, as the rollers are "rolling" on the thread rather than gliding!

How is it being driven? Or let me refrase that: which part of that Is being driven? Is there a motor driving the planetary “bolts” directly or is the inner or outer part driven?

@yoannmonterymard5766

3 жыл бұрын

The motor can be driving the mechanism in two ways. You can either have a motor coupled on a machined end of the shaft. You make the shaft rotate, making the nut translate (you then have to avoid rotation of the nut by guiding it or the part it is mounted in). The other way is to have the nut driven by the motor, either by gears or pulley-belt system, then the shaft will translate and push/pull what you need it to. The rotation of the shaft or it's linked part will be needed then. Hope it's clearer!

To understand that concept correctly: it is performing like a ballscrew, but better suited for higher loads or if a greater stiffness is necessary?

@douro20

3 жыл бұрын

Yes. And it can even be used for speed multiplication or reduction.

@yoannmonterymard5766

3 жыл бұрын

Yes, if you need higher speed and acceleration, if you need to bear with high peak loads, or if you need to have a more compact system to handle high loads and lifetime

I wonder how effective they are in a press operation compared to hydraulics.

@Bob_Adkins

2 жыл бұрын

Not good for super high pressure.

Wow. My tiny brain hurts even more now.

So how'd you bypass the 3-gear rule?

@FractileSoriah

3 жыл бұрын

nothings meshing except the planet gear and each individual cog, each of which is just out of reach of the next

Overengineered nut?

@TheBigInt

3 жыл бұрын

No, I think its perfectly engineered. Always used to wonder how is it that they exert tens of tons of force on such a small machine? Turns out the force is divided into all that many screws. Its perfect.

@Bread996

3 жыл бұрын

@@TheBigInt A standard ACME nut can hold far more load. The face of the thread profile is supported fully. These are designed to compete with ball screws, and are stronger in those applications where zero backlash is required.

@rotten-Z

3 жыл бұрын

Yes. Undoubtedly

3 жыл бұрын

No, not when the friction of nuts is too high. Friction can be a disadvantage if you want smooth control of the position, in part because static and kinetic friction is different, but also if you want to prevent the friction from wearing down materials in high load scenarios. A regular nut is good enough for a lot of cases, but this definitely has a place.

@jaredkennedy6576

3 жыл бұрын

@ I've built plenty of stuff using recirculating ball nuts, no friction issues with those. This seems like another step of gearing more than anything. It could even be shiftable depending on whether the shell or planet carrier is held.

Neat

horizontal elevators - or vertical ones for the Moon & starships

This is science fiction for me.

Imagine making a J damper with one of these

The animation should have included barber stripes on the lead screw and the planets so that it was more obvious what was going on here.

seems interesting but where is the motor?

@yoannmonterymard5766

2 жыл бұрын

Can be either driving the shaft (you need a machined shaft end not shown on the video), or the nut (with a gear or pulley/belt system). The non driven part will then translate. You basically use those to make electromechanical versions of hydrualic jacks.

Lubrication of any kind? Looks awesome otherwise. What kind of a bearing do our Pilots have?

@yoannmonterymard5766

3 жыл бұрын

It needs lubrication indeed, similarly to rolling bearing and gearboxes. The lubrication will be closer to those of gears than rolling bearings though!

أَوَلَيْسَ ٱلَّذِى خَلَقَ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضَ بِقَٰدِرٍ عَلَىٰٓ أَن يَخْلُقَ مِثْلَهُم ۚ بَلَىٰ وَهُوَ ٱلْخَلَّٰقُ ٱلْعَلِيمُ إِنَّمَآ أَمْرُهُۥٓ إِذَآ أَرَادَ شَيْـًٔا أَن يَقُولَ لَهُۥ كُن فَيَكُونُ فَسُبْحَٰنَ ٱلَّذِى بِيَدِهِۦ مَلَكُوتُ كُلِّ شَىْءٍ وَإِلَيْهِ تُرْجَعُونَ

Just how many paychecks to get one of them, then how many more paychecks to get the parts needed to use the darn thing.

Это очень круто👍👍👍

@enercellvitia

3 жыл бұрын

Это очень круто выглядит, а ломаться будет ещё круче.

@verhovnijglavkom2439

3 жыл бұрын

@@enercellvitia на самом деле конструкция уже не нова и отработана на все 100. Один из вариантов четкой ,очень мощной передачи и кстати обладающей поразительной износостойкостью. 👍

@verhovnijglavkom2439

3 жыл бұрын

@@enercellvitia есть ещё масса вариантов спаривания этих передач с различными редукторными механизмами, в которых рабочие резьбовые ролики так называемой гайки являются сателитами в мощнейшем редукторе . И привод идёт от многооборотистого двигателя на пневмо ,гидро ,ну или электро тяге..

Music?