Pressure Bearings = Most Dangerous Item To Crush

[@WineScrounger]

If it gets too hairy, consider some good optical mirrors that will allow you to film round a corner and preserve the cameras behind some steel plate. Even if you lose a mirror one day it could make for a much smaller and tighter containment box. Love to you both 🤘

[@AlaricAchos]

you could also use the mirror idea to view underneath the last crush

[@thegrumpyoldmechanic6245]

A trick the Soviets figured out when studying implosion for their Atomic bomb. (Richard Rhodes The Making of the Atomic Bomb)

[@spambot7110]

maybe use a pretty weak mirror to ensure shrapnel will break the mirror rather than reflect off

[@Tatwinus]

Double mirrors at 45° so there is no distortion/mirroring effect in the captured footage.

[@spambot7110]

@@Tatwinus seems like a lot of complexity when you can just mirror the footage in post. a second mirror won't cancel out distortion from irregularities in the first mirror, it'll just add its own as well.

[@tbjas]

At 4:52 a ball flies straight to the camera, bounces off the shield and hits the press tool leaving a mark. That just shows you how fast these things are.

[@MAcDaTHo]

I wouldn't have noticed it is the same ball that left focus, reentered and made a dent. Such a cool effect. Thank you!

[@keamu8580]

It has places to go, and it don't care if you're in the way

[@CapaNoisyCapa]

Wow, good catch!

[@BradleySmith1985]

i saw that also

[@ObjectFive]

Try this again with radial bearing, but make a housing that doesn't allow outer ring to snap. Try pressing gently and see if it still spins or does it get extremely crunchy. And then also press until destruction.

[@Raven74947]

I was thinking the same. That bearing would have been very strong with the inner and outer surfaces properly supported.

[@Ben-sz6cd]

But then it's about the strength of the housing and not the item being crushed!

[@gabiold]

@@Ben-sz6cd It would be still interesting to see in a seriously thick housing and a shaft in the inner race as well, whether the races will explode or the balls, or what else.

[@Dwonis]

@@Ben-sz6cd that's how the bearings are designed to be used, though! It would give a much more realistic sense of how much axial load the bearings can take

[@LukeA_55]

Why not just remove the outer rings and try to explode all the ball bearings... That would be so cool if he could get like 10 ball bearings to explode at once

[@Chris_Garman]

Shoutout to the force sensor for handling all of the shock it does.

[@WineScrounger]

The unsung hero of this arc

[@wozzy7]

Underrated comment

[@mattt198654321]

It's a stressful job but it never buckles under the weight of the situation

[@lennethwemyss3713]

Safety first 💕 what about multiple layers of 8mm thick polycarbonate? Also, you can reuse the cracked one as extra padding on the sides of the safety box, the metal should keep it togheter and it will dampen the biggest shrapnels :)

[@MikkoRantalainen]

I think 8 mm + 12 mm should be pretty good combination. Put the 8 mm polycarbonate plate as the inner one and you can replace just that when it gets damaged.

[@keamu8580]

Yes. Broken wall material was often used as center fill in castle walls because once the outer shell breaks, cannonballs striking the loose material in the center are not very effective at penetrating to damage the inner shell.

[@MikkoRantalainen]

@@keamu8580 That's a good point. Maybe a good technique would be to use 8 mm + 12 mm with a few millimeter space between those and fill it with water but leave the water container fully open at the top. If something heavy is hitting the interior surface will will compress the water before applying the force to the outer surface. In addition, with water filling the space between the two surfaces, you should get less internal reflections which should improve optical quality of your screen.

[@PhilG999]

In English those are called "Thrust Bearings" some other axial bearings are "Needle" bearings. Those can be made in radial also, but are for much smaller loads...

[@keamu8580]

Bear Thrusting? Oh, sorry.

[@sw5334]

I think you would get higher loads from the smaller bearings if you didn’t double stack them. I think they fail do to the upper and lower level balls not lining up. The balls are in between each other and causing point loads on the races. If you did a single layer then each race would have full support.

[@MountainLich]

ya it they very clearly break once the top and bottom are no longer aligned properly

[@tcoiler]

Yep, that's just what I was thinking.

[@chrimony]

You get more protection per layer if you space the layers out a bit. I saw a video about this, this is how NASA designs shields against high velocity impacts. The idea is if it breaks through the first layer, it has a chance to spread out before impacting the second layer.

[@slaphappyduplenty2436]

Pretty sure that only applies to impactors moving at orbital velocities, i.e. >20,000 km/h

[@chrimony]

@@slaphappyduplenty2436 Principle is the same.

[@mikewilliams6467]

Whipple shield.

[@rickylafleur5823]

​@@slaphappyduplenty2436 this is how most armored things are setup as well. this is also how they test penetration as every time it has to penetrate there is a chance of shattering along with kinetic losses. google spaced armor. in this case of needing to film a clear soft layer would work great in between.

[@davidtatum8682]

Kinda the same deal with reactive armor.

[@miguelcosta9665]

4:55 One of the bearings goes straight at the camera, bouces on the glass and hits the machine leaving a dent into it... glad this ones arent dangerous, imagine if they were 😂

[@duncanurquhart5278]

wow good catch, even on the high-speed camera it only takes about 16 frames for it to get close enough to be out of focus

[@Elendil513]

My favorite channel, been watching for 7 years now and it only gets better

[@SuperUncleRyan]

What happened to the girl?

[@lonelymtbrider3369]

I like that the concept of this channel has kind of gone back to the roots. Sometimes channels seem to progress and progress and progress, until you no longer recognize it all.

[@caodesignworks2407]

Indeed, but I also miss some of the other cast of people and their background commentary/ giggles. As well as the guitar riff and squashed clay things.

[@lonelymtbrider3369]

@@caodesignworks2407 Yes, the guitar riff etc is something I also miss, and the "Welgom to hydrolic press chanel". But it's no biggie. 🙂

[@caodesignworks2407]

@@lonelymtbrider3369 Indeed, no biggie, but it does feel a bit lonlier without it.

[@GarethField]

This was sooo wholesome, please more like this, stay safe, that edge though, such raw curiosity, it’s healing

[@nathansnow]

I think it was a good call not crushing the bigger bearing 😬 until either some thicker polycarbonate (or multiple layers like has been suggested)... Safety first always 👌 Stay safe Lauri and Anni 🇫🇮 🇦🇺

[@brendanblanks4438]

And yet, it's still not as dangerous as a miniature turtle made of play-doh. It may look harmless, but it is extremely dangerous! So we have to deal with it.

[@ericthe3rdone]

Him: “I’m really scared of this one. I don’t like this at all” Also him: immediately flips the machine on* Quality content for sure 👍🏽

[@ChainsawFPV]

5:03 One of the ball bearings hit directly in the middle of the high speed lens, bounced back, and still left a dent in the steel of the press.

[@dimitar4y]

the lens is probably plastic and it can bounce medium speed projectiles at very good efficiencies, and the steel balls are very hard so they can dent metal easily~

[@BryceKimball7.3]

@@dimitar4y the dies are very hard. The bearings are very hard, but so are the dies, so it would take a good amount of energy to do that.

[@Bobs-Wrigles5555]

@@dimitar4y Remember there is a layer of polycarbonate between the bearing and camera, but you can see it better at 0.25 speed at 4:56, nice dint.

[@dimitar4y]

@@BryceKimball7.3 balls are the hardest. and their contact point being a point means max denture.

[@BryceKimball7.3]

@@dimitar4y balls are the hardest what. Yes I know the tiny impact point means they can dent stuff easily, but the dent was deep enough that it took more than a little energy.

[@skyeline.]

I randomly remember like 5-7 years ago watching HPC while eating Fazer blue and staying inside during a rainstorm

[@Abell_lledA]

Narrative of Self is the result of a feedback loop between “Separate Self” & Cosmos🎈

[@zaphodb777]

You should set up the safety box as an armored metal box, with a periscopic, sacrificiable mirror... So none of your equipment, or you, will be exposed to hazards caused by a failure of polycarbonate. Periscopic camera enclosures are good too, especially around explosive tests, usually with a buffer of sand backed with vermiculite to protect the camera from shrapnel.

[@mattilindstrom]

I must compliment you again on your straightforward Finnish accent, that's a beautiful thing and always a pleasure! Olet raudanluja kokeilija, hiihdä näitä latuja ja menesty vielä suuremmin!

[@therealjamesmartin]

Please don't think I am trying to insult your English, as it is brilliant. So much better than my 2nd language! Anyways, I thought you may be interested to know that we call the inner and outer 'cups' of the bearing 'races' in English. Thanks for all your vids over the years! Also my recommendation for strengthening the windows is to use two panels with a gap, as two separate layers provide greater impact protection from very fast moving shrapnel than a single double thickness layer.

[@landenhoefs7530]

These hardened/high strength crushing videos are pretty much don’t flinch challenges.

[@XBDAX1]

I feel like crushing two bearings at the same time cuts down on the speed of the shrapnel. I think having two gives the bearings more room to bend/give.

[@RatRatRattyRatRat]

Second hand story, but my father nearly got killed by one of these twice. He worked as a calibration expert at Bowser-Morner, testing these in a rig that used two spheres that the bearing sat between as I understand it. The test was on one of these, but like 4 feet OD. It shot out of the testing rig, hit a cement wall, and exploded. There was the two outer rings embedded into the cement wall, and the ball bearings went into the opposite wall about 20 feet away, leaving potholes in it. By some divine miracle my dad just got a cut on his hand, despite being in the path of both sets of projectiles. Good news, this test is now done behind ballistic glass and a cement wall!

[@keamu8580]

For reference, 150m\s is around 450 ft\s, which is almost half the speed of sound, 330m\s. Most bullets are sub-sonic rounds, meaning they travel less than 330 m\s. Those fragments were easily flying with the force of a low-powered bullet, such as a .25 cal revolver.

[@outcast170]

Pretty surprised at that last press. I figured the 1 ton guess was high, definitly would have never guess it would last as high as it did.

[@anderswegge6828]

Could you repeat this experiment while the bearings are in motion? I'm curious whether the axial load bearings continue functioning right up until they break, or if they seize up earlier.

[@Govanification]

They would seize before exploding, but depending how fast you apply the force (and with a press it's pretty fast!) there might only be a short delay. The "rated loads" for these types of bearings are the operating loads where they can still spin without wearing out the grooves where the balls roll, so when you exceed that load you start accelerating the wear until everything comes to a grinding halt.

[@zombiegeorge749]

Yeah, can I get you to put your hands in there and spin them while crush?

[@anderswegge6828]

@@zombiegeorge749 No, that's your job. My job is to tell you how to wrap a string around them.

[@keamu8580]

They would be mechanically incapable of failing until they seized, however that process would happen in an instant, even to the eyes of the high-speed camera. Seizing and shattering would basically happen in the same frame, I believe.

[@aperson7624]

I know I'm a bit late on this, but sheet metal armor is fine, just make it into spaced armor. So say it was 1mm sheet metal, you'd have (bottom to top) 1mm sheet, 2mm gap, 1mm sheet, 2mm gap, 1mm sheet, 2mm gap, etc. If you have any metal thicker / stronger than the 1mm sheet (say, a 1mm sheet of Titanium instead of mild steel) you'd make that the 'face sheet'. The idea being you want your hardest/strongest layer facing the threat, and the spaced layers behind take care of anything that manages to penetrate. 3-1mm sheets will provide more protection than a single 3mm sheet. In fact, they'll provide more protection than a single 6mm sheet. Spaced armor is really good for the types of projectiles bearing crushes make.

[@Dorfjunge]

"Day are maid for different poor poses" man I love you heavy accent! xDDD

[@kane2103]

Would be cool to have clay on the walls of the enclosure so can see all the impacts from shrapnel.

[@andrewamann2821]

That would probably increase the setup and teardown time by a considerable margin...

[@keamu8580]

Holy fuck, that's a phenomenal idea. Another version of this idea that I've seen was the videographer put up a black fabric sheet with a bright light behind it. When the shrapnel damage the sheet, light shined through in every spot.

[@douggiles7647]

Love your videos, but I totally agree you should upgrade the containment shield. While we do love seeing destruction we definitely don't want to see you end up getting hurt. Stay happy and healthy my friends!!

[@EliteTruckRepairs]

This is by far the scariest thing I have ever seen you do, and I have been a sub since you had maybe 10k followers. At least you have the safety box now, but I worried even that would fail from the explosion. Maybe time to get a stronger safety box with bullet proof glass and 3/8 steel? Good show bud.

[@donniev8181]

What's cool is the slow motion spark shot at 3:50, you could see the super small flakes of metal inside of the spark.

[@TheRealStructurer]

My favorite Finnish channel 👍🏻 I hope you get enough views to be able to afford an even better high speed camera. Makes a lot of difference. I’m not a high speed camera rockery in any way, but can you get higher frame rates if you go with a lower resolution?

[@danielduesitrieb8129]

After improving safety measures try the axial bearings without the ball cage. Should give a lot of flying high speed parts.

[@44070Swinger]

There's two channels on KZbin that make me instantly stop scrolling and hit play, this is one of those channels!

[@Eargesplitten-Loudenboomer]

9:00 The forbidden Big Mac.

[@stalhandske9649]

To those who think that 150m/s is not that bad: consider the energy, that is joules on the move. A hunting rifle bullet leaving the barrel travels perhaps 850m/s and weighs something like 8-18 grams* - while some of those shrapnels could weigh dozens of grams. The hit from one would carry as much energy as a pistol bullet. *Gun nuts, I know there are many examples outside this range. It's just my estimate of most common range & hunting bullet weights.

[@justalittleoff-grid1180]

I think it’s amazing that a fluid is capable of being incompressible and still can take the volume of a container and yet can create a means by which to crush crazy shit! Hydraulics are insane.

[@uh-oh8704]

Love all your work! I've been wondering if Anni is doing her own thing nowadays as I only follow this channel. You probably address this in another video. Typical me a day late and a dollar short... Keep up the great work!

[@krissp8712]

Ya, I think she said she was going back to a normal job but I couldn't find the announcement either :(

[@kain0m]

@@krissp8712 He made a video on beyond the press channel. Anni got tired of the youtube stuff, and picked up a job at Ikea.

[@9072997]

I swear KZbin is in my brain. Yesterday on my drive home I was contemplating if it was possible to make a bearing that could take an axial load with no sliding friction. I am not the sort of person to use bearings (as evidenced by the fact that I didn't know pressure bearings existed) and did not discuss that thought with anyone or search for anything related to it.

[@gfresh353]

Always fun to watch. Only in this day and age could you earn a living showing videos about crushing things. Pretty cool.

[@billj5645]

"Axial" bearing- some people might call that a "thrust" bearing. High carbon heat treated steel can fracture with no ductility, meaning pieces flying out. Sometimes when you have radial bearings pressed onto a shaft, you have to break the bearing race to get it off meaning you beat on it with a heavy hammer and a sharp chisel. I've seen people do this and have small pieces of metal embed in their skin when the bearing finally fractures.

[@Dwonis]

Thank you for taking your safety seriously! It still makes for an awesome video; it's not every day that we get to see you say you're gonna "upgrade the safety box" hahaha 🤣

[@2rainerzufall2]

you need to make videos with the guy from slow mo guys. i think its very interesting to see some things explod with 400000 fps...

[@SeanBZA]

Taper roller bearings, first in free air, and then one in a piece of machined mild steel housing, like it is in actual use. In free air it will break easily, but the mild steel case should make it hold up to a very high load before failure. Bonus if you freeze fit the outer race into the housing.

[@pxjydz303]

You're my favorite KZbin channel. Keep up the great work! Danger is all part of the fun!!!

[@danielbluwatsch4607]

Hi i missing anni where is she? Nice video by the way

[@tunafish3216]

That’s great with narration included . Thanks

[@Biaanca5036]

I'm excited for the X'th year anniversary when those green electrical panels in the background finally get repainted! :D

[@kazielbonn]

"Holy shit these are strong... what the hell!" One of your funniest videos so far, really enjoyed it! :D

[@redgum1340]

Hey man, there are a few people blowing up shit but you're the best. I love watching this stuff. LOL

[@niklaskoskinen123]

Put a bearing on top of a screw, and see if it will rotate when it is pushed into wood.

[@brandonb9452]

Similarly to worm gears not functioning in reverse, I expect nothing would happen

[@MF175mp]

They probably did it years ago if I recall correctly

[@ChilledOutGuild]

If you want to get both cameras in the primary position, you can achieve this using mirrors have the cameras shooting left or right and use a couple of 45-degree mirrors to redirect the directions towards the press.

[@huffy737]

Be safe for sure before it’s too late. Been thinking the safety box needed an upgrading. Lightning was a good upgrade but thicker poly will be much safer. The cameras can be replaced. People not so easily.

[@brett567]

The outer plates are called bearing races

[@IAmNumber4000]

DIY fragmentation grenade

[@BuzzinVideography]

I have made a crush bearing like that for the steering stem of a dirtbike. It was 21mm outside diameter. Glad to know how strong it is. Now I KNOW I can jump higher

[@roblikestotalk4984]

Nice video. I don’t really have anything to add. I’m just commenting on your video for the algorithm.

[@angelarredondo611]

Stay safe

[@dylanharkavy9089]

Hey guys, for more protection look into Ballistic Laminate materials. The alternating layers of SGP(sentryglas or PVB) and Acrylic are extremely strong.

[@SuperWorldRailFanProductions]

These videos make my day! Keep it up!

[@MagnetOnlyMotors]

0:20 or thrust bearing. Glad to see a test to the max of this!

[@johndododoe1411]

In the last test, the object failed at one force level, then the tool wedged itself into the remains and cracked it at a higher force, which the sensor logged as the max, but the first force peak is the real one.

[@ProteinFromTheSea]

The Oreos that you shouldn't bite into.

[@srh1101]

We're going to freeze the sucker down! What a brilliant logo for a T-shirt :)

[@joshuagibson2520]

We miss Anni. Severely.

[@rootbrian4815]

Those explosions and flying debries!

[@forgetittube5882]

You know you are pushing too far when even Lauri gets cautions of the next step😁😂

[@sadiqakbartaranwal]

We all just appreciate the content this man and his crew makes its just a masterpiece imagine what's he's gonna doing the future 💛.....

[@jps26]

Good to see your always ousting safely first over views, as much as I would love to see the baring pop, not if it's gonna hurt any of you with shrapnel.

[@teardowndan5364]

Bearing strength not scaling too well with size for a given material strength shouldn't be too surprising: the total contact patch between spherical bearings and their races is approximately the same regardless of bearing size, which makes it all about how much point-loading the bearing races can bear.

[@BunnyKins1970]

What would happen if you took the last bearing in the video and supported both the inner and outer rings, then pushed a cone shaped tool through the middle? Also, I like the idea that the one you opted not to crush could explode and take out all of the workshop windows individually! 💚🐇🐴💚

[@Mister_Clean]

I think that would create a singularity

[@archimedes9046]

I like how the little metal ball at 5:03 looks like its going straight for the camera and then disappears

[@xxfreedomxx9479]

I saw that too lol

[@Fungusamnguss]

Can't wait for revisit of this

[@keirakain]

Also another fun idea is see how much you can compress water in a sealed pipe until the pipe ruptures since you are getting the new safety stuff

[@Rubensgardens.Skogsmuseum]

Hey Lauri- could you test which way a adjustable wrench is stronger. There is some dispute which way it will hold the nut best and which way it will break earlier. You need to check both grip (how much it flexes) and damage on the worm vs jaw. It would be very interesting to see.

[@rocketsurgeon11]

That axial test was interesting. Not what I expected at all.

[@BenjySparky]

Laurie you rock! Love the channel and content! I'm here for the algorithm! Peace

[@erikev]

You should try unseating the deep groove ball bearing when the outer race is seated well, and the inner race is on a shaft. I am sure you can make an anvil to seat the bearing, and a short shaft with a shoulder to press it out. This way we can see the actual axial load in a rea application. My guess it 20 tons instead of 10 tons

[@kain0m]

well, the bearing is broken long before it exploded. these loads pit the surface of the race, making the bearing useless. His one ton guess is probably not far off for a bearing that size.

[@PenadoX3]

"Gonna Be Pretty G*d D*mn Dangerous" I want this on a shirt... 😂

[@pr0fessoro]

try with one bearing at time - will be stronger than two, because or balls and pressure in middle rings or you can use thick steel plate to separate bearings, or alignment balls (ball against ball, gap against gap) ...

[@Tibersun]

Is it possible to have the highspeed capture from a less zoomed in vantage point. It would be interesting to see the balls and shrapnel moving at a greater distance and maybe hitting the polycarbonate. I understand this might be a focus and data rate issue though.

[@lashlarue7924]

Jaaaaaas!! My favorite obscure channel - the, "hoo-draulic press channel"!!! 😆👍

[@ocryos]

Kinda sad that we didn't have our watermelon friends today.

[@TheGramophoneGirl]

6:28 "I'm really scared of this one. I don't like it at all. Here we go...." lol

[@IAmTheOnlyMrDaryl]

Can't wait to see part 2

[@Corkoth55]

Its strange to not hear Anni

[@robertthompson3447]

Still no Play-Doh extra content?

[@chrisakaschulbus4903]

6:33 "Here we go. Not good." Last words to live by...

[@nokiot9]

I bet you were an absolute MENACE in shop class in school 😂

[@Steven.Stovall]

Having worked with these presses, that kinda makes one cringe at the amount of pressure just waiting for it to explode. The press I used probably wasn't this strong. It could get dents out of metal like it's nothing though.

[@vesatapola7908]

Ponsse forest machines are used for windows, Lexan margard plexiglass 12mm. This material would fit the safety box.

[@intelboydj1]

Hey Lauri, I laughed so hard about your giant bolt and nut, about 123.5 tons of force. LOL 🤣🤣

[@justicelut]

Love your channel you crazy Finn!

[@JesusIsKing-OfKings]

Idk what you say but I like what you’re doing

[@commanderlake7997]

Maybe you could try a needle roller thrust bearing.

[@spambot7110]

what would be fun would be to have a stack of 2 bearings, with a middle part spinning, so that you can see when they bind up

[@Free_Krazy]

To upgrade the safety of the safety box i think the easiest and most effective solution would be to double up the walls with the same materials and another sheet of polycarbonate glass, i dont see much getting through that, two layers might even stop small pistol rounds, but i wouldn't bet my life on that lol

[@giverback]

you could put the radial bearings in a block and see if it adds strength axially