A better comparison would be longevity and durance rather than crush. bearings don't wear out in a crush setting. Spin them without grease at 3450 rpms and see how long they last is a better comparison.
Testing a bearing this way is like, testing how much heat a computer can generate to work as a space heater. And btw, this is a $22 to $0.4 comparison so a result 4394Kg vs 3104Kg is very very reasonable.
Is it really a pointless test? So you put one of these in each hub of your car/van (which weighs from 1450-2000kg). Then you put 2 to 4 adult passengers in there (160-400kg), and load the load space up with another, say 500kg. That's a total of 2900kg at rest (distributed between the 4 wheels, so let's divide equally by 4). Then drive that vehicle, at just 60mph (100kmh), over a 5cm deep pothole, or a 5cm bump. That's about 39,000N of force, per wheel, or 3.9 tons. Sure I'm not taking into account the damping of the suspension, tyre pressure, unsprung/sprung weight, etc. but even so that is _above_ the tested capability of the Chinese bearing (and _undoubtedly well below_ its _claimed_ load bearing). So yeah....I'll certainly go with the SKF bearings in my vehicle, with my two kids on board. No doubt whatsoever.
@@garyt123 thanks for doing all the math. However, this type of bearing is never meant to be used that way. The force applied on the bearing is between the inner ring and the otter ring, from the axial to the chassis. You have ever right to choose whatever tool you want. It’s your money anyway.
2. Points. 1. these types of bearings aren't meant to take shock or point loads. 2. What was the static rating for both bearings? If the datasheet values exceed the test results, then that's fine. nothing wrong with either. Just more margin on the SKF Bearing
Bearings are rated much higher when they rotate compared to when they don't, or else you could make a thicker outer casing for the Chinese one and pass the test. These things need to be tested when they spin.
That the Chinese bearing broke sooner means that it was harder which probably means that it wears less. In any case, bearings are meant to last longer not withstand more pressure.
Love no filler video👍. Let be realistic... it is probably Chinese bearing vs Chinese bearing with SKF label on it. I assume the label sticker is pretty strong.. .🤣🤣🤣
Bearing are not meant to work that way, what they bear is a radial force applied compressing internal ring on the external one, properly mounted in their support or seats
I was a mechanic for years and taught technology in high school. All manufacturers know how to make great stuff, crap, or anywhere in between. It's a market driven choice. Jobber bearing cheap. Lexus bearing top quality. Chrysler bearing, make it last 150k km. For the most part, the consumers are too busy to educate themselves enough to really know. And yes this is a silly test. A Rockwell hardness test would be much more appropriate.
Rebuilding a YZ85 I bought a cheap rebuild kit which included cheap main bearings. I sprung for the SKF’s which said made in France? To my untrained hand they felt different rotationally. The bearings in the kit seemed rough & loose while the SKF’s felt smooth and tight. Admittedly they were sealed while the cheap kit bearings were open but even after popping off the SKF seals they still felt silky vs gritty.
What about the price? I do not deny the quality of SKF, but for the same model, users do not necessarily need to pursue extreme indicators. The increase in costs caused by price differences is a priority for users. Just like Carl Zeiss or Canon cameras and lenses , which one is better, but which one will you choose ?
Somehow I fail to understand this test. These ballbearings are not made to withstand these forces, they are bearings, so the right test would be to see how long it takes to wear them out.
Yes, I'm happy to use Timken bearings too, I have no problem with them. I work on machinery, not cars. Some of the bearings I have to install are running in extreme conditions.
Can you put the cover on the chinese one and test it again? I wonder if that "weak" part actually helps with the stresses that occur in the metal parts when they are being compressed.
Great! I subbed to not miss that :) If you still have those bearings then just swap the cover (not sure if it will fit but it should)@@HydraulicPressGuy
Both are plenty good enough for any mower deck spindles as long as they are greased properly from the factory. Keeping the water out and maintenance is the major factor for longevity.
Nope.... Been there done that I had to replace all my deck spindle bearings a second time after using Chinese bearings for only a very very short period of time
It it possible to find anything from SKF that is NOT manufactured in China? I've recently replaced the shock absorber bushings and they were 100% Chinese (no markings on them whatsoever). Took them out of SKF boxes, with holograms, QRs and the like.
Knew a guy who tested engine parts for Ford. They'd put a motor on a dyno eith acfalse load of a fully loaded car at 60 mph. They ran them non-stop untill they failed. Then disassembled the motor and instead of upgrading the parts that failed, they downgraded the ones that showed littl wear to save money. That's why you can rebuild an engine with top quality parts and it's actually better than a factory new one.
Wonderful video, we love this channel. But it would be good to put in the description that is not the way bearings are tested. Thanks guys for your cool videos!
Cheers guys! This is a crush test for entertainment. I can’t edit the description now as it might effect the meta data and stop the views but I’m sure anyone who watches this for anything more than entertainment will know this isn’t a relevant to for bearing longevity 👍
A very smart test from a technical point of view. Try testing your Intel CPU with a Chinese CPU next time using this method. Or Swiss watches versus Chinese ones.
Gives you a hint that SKF will last longer in a spin test as well. Constant spinning under pressure will impact the material on the long run. If less well manufactured, like the Chinese bearing, it will last shorter and has less security buffer in different aspects. This just as an answer to the people stating that this test was irrelevant for real usage....
the chinese bearing is without a sheild? also he used the cheapest chinese bearing which cost 10x less vs the most expensive one which cost 10 x more and the result is less than 40%
For testing both must be z garade. But one is sealed and ball bearing both grade must be same here both grade mismatch but skf quality is great when compare with other products.
I remember when Timken, SKF, Bower, and many others were made here. I run Chinese tires compared to Michelin. I get 10K less miles less out of the Chinese tires compared to the Michelin tires, Michelins are 3 1/2 times the cost. I don't like buying anything from China, but when you live on a fixed income, you make due. By the way, bought a Edlebrock manifold from Edelbrock directly for a friend, took it out of the box, on the bottom, Made in China.
Hey, if you have a hydraulic press you need to find stuff to squish, regardless of whether it makes sense or not. Please test a European block of steel vs a Chinese block of steel, with similar material properties like Rockwell harness, etc.
Made in China no longer means low quality and the price will be lower due to large production numbers. European and Made in USA just mean higher prices for the same thing.
Quality is not about where it was made instead look at the technical data of the product. The manufacturer should provide all the tech data about the product they sell (sometimes only when you ask). Such as: - What kind of material is that? - What are the measurements? - What was the process to make it? - What are the results of the tests they have run?
@@jonasbarbury4013 Absolutely. Although if you don't look at China as one big company, you can easily find the range of quality and price you want. Each individual company is usually quite consistent imho. Tool forums and reviewers can help a lot.
The reason why Chinese bearings have a shorter lifespan than SKF and NTN bearings is due to the difference in the strength of their shells. Bearings used in MTB wheels that are made in China have a lifespan of about one year. NTN lasts more than 2 years.
A problem that I have with modern bearings is that the cage for the balls is made out of plastic and it gets brittle and fails when exposed to heat.... not good !
there are many china ball bearing manufacturers and brand names. their qualities and price also vary in wide range. no single maker represent the whole china technologies. this video should provide the brandname product model and price for both bearings shown in the video to make it more meaningful to the viewers
Espero que no sea ingeniero el que ha diseñado el test, no creo que esa prueba sirva para determinar la calidad de un rodamiento, al menos de es tipo, y por otra parte uno lleva cierre lateral y el otro no, con lo que la medida ya sale falseada.
Reading the comments I am amazed by the number of people upset about this trying to defend the Chinese bearings and being negative about your testing. Have these people not seen your other videos? This was clearly just a video for entertainment. I can only assume those comments are from Chinese bots as no one could be so silly.
Very strange test, the main work of bearing is not to stand pressure but rotating speed and which one can stand higher temp. If the user needs to use a bearing in a machine, we must get all paremeters of this machine then we can choose a "suitable" bearing instead of the "best" one. Another strange point is SKF compared with "CHINA" bearing, SKF is the best swidish brand, and there are hundreds of bearings in CHINA, which brand you choosed? Did you choose the best one or the worst one among all Chinese brand? This kind of comparison is pretty wired.
Ball bearings like this are not meant to handle this type of a load. The real test is to compare the rockwell hardness test to the outer and inner bearing races and then compare the hardness of the roller balls. Even then the hardness test between different manufacturers is a mute point. The biggest factor is the hardness of the roller balls in relation to the respective bearing races. Just about any ball bearing will last and perform well when properly lubricate. Even the highest quality bearing will fail without lubrication or contaminated lube.
I've been to China eight times and they produce products as good as American or European ones and products as bad as possible. If you buy a set of 20 tools in a Chinese shop and pay $10 for them, and then they break, well, that's your fault. It's like buying a "Rolex" for $20.... And the importer is to blame for poor quality products, always wanting to pay less to earn more. In China you can go into any store, from underpants to scientific equipment, there are no poor quality products. These cheap products are available for export, along with the high quality ones, which the importer chooses.
Sem sentido este teste pois se alinhar as esferas no sentido da pressão por der bem mais força para estourar o rolamento, e como i skf esta com a capa, podem ter feto o teste com as esferas alinhadas as bases de força
A better comparison would be longevity and durance rather than crush. bearings don't wear out in a crush setting. Spin them without grease at 3450 rpms and see how long they last is a better comparison.
I think the point of the exercise is to show CHINESE STUFF IS CRAP, !!!! FFS.
SKF bearing is made in china as well
lo chino no sirve .
Totally agree but how many people would watch that video? This is just a crush test for entertainment 📺
Sem sentido não disse nada
Testing a bearing this way is like, testing how much heat a computer can generate to work as a space heater. And btw, this is a $22 to $0.4 comparison so a result 4394Kg vs 3104Kg is very very reasonable.
Yes
But it looked cool
Agreed, this is pointless test
Is it really a pointless test? So you put one of these in each hub of your car/van (which weighs from 1450-2000kg). Then you put 2 to 4 adult passengers in there (160-400kg), and load the load space up with another, say 500kg. That's a total of 2900kg at rest (distributed between the 4 wheels, so let's divide equally by 4).
Then drive that vehicle, at just 60mph (100kmh), over a 5cm deep pothole, or a 5cm bump. That's about 39,000N of force, per wheel, or 3.9 tons. Sure I'm not taking into account the damping of the suspension, tyre pressure, unsprung/sprung weight, etc. but even so that is _above_ the tested capability of the Chinese bearing (and _undoubtedly well below_ its _claimed_ load bearing).
So yeah....I'll certainly go with the SKF bearings in my vehicle, with my two kids on board. No doubt whatsoever.
@@garyt123 thanks for doing all the math. However, this type of bearing is never meant to be used that way. The force applied on the bearing is between the inner ring and the otter ring, from the axial to the chassis.
You have ever right to choose whatever tool you want. It’s your money anyway.
2. Points.
1. these types of bearings aren't meant to take shock or point loads.
2. What was the static rating for both bearings? If the datasheet values exceed the test results, then that's fine. nothing wrong with either. Just more margin on the SKF Bearing
One sample .. unscientific test... useless load .. good for entertainment!
This was just a crush test for entertainment 👍
Corect
Так смысл этого видео был не в этом. Не профессиональных целях а в целях интереса того, сколько бы они выдержали нагрузку
"this was just for entertainment"? 😂😂😂 Then why the brand name?😂😂😂
To me both held very well and way above actual workload.
And the chinese is signifiand cheaper. Obviously it is to prefer the chinese one.
@@sorinzamfirescu2797 idiot
Bearings are rated much higher when they rotate compared to when they don't, or else you could make a thicker outer casing for the Chinese one and pass the test. These things need to be tested when they spin.
Absolutely, this is a just crush test for entertainment 👍
That the Chinese bearing broke sooner means that it was harder which probably means that it wears less. In any case, bearings are meant to last longer not withstand more pressure.
This is a crush test for entertainment 👍
That's not how metallurgy works bud
@@HydraulicPressGuy Stop wasting people's time.
Sweden vs China. China lose
@@acreguy3156 He didn't waste mine, so , i am still thankful to him.
Love no filler video👍. Let be realistic... it is probably Chinese bearing vs Chinese bearing with SKF label on it. I assume the label sticker is pretty strong.. .🤣🤣🤣
Dobra debilina ,ložisko nikdy takto nepraskne lebo je uložene v obale a zaleží velmi na tom ako je dobre mazane 😢😢😢😢😢😢😢😢😢😢
Toto je uplna somarina keby mali taku štrasnu vyrobu lozisk asi by nemali taku techniku aku maju. Toto je AI hoax.😢😢😢😢😢😢😢😢😢
Bearing are not meant to work that way, what they bear is a radial force applied compressing internal ring on the external one, properly mounted in their support or seats
This was just a crush test for entertainment 👍
I was a mechanic for years and taught technology in high school. All manufacturers know how to make great stuff, crap, or anywhere in between. It's a market driven choice. Jobber bearing cheap. Lexus bearing top quality. Chrysler bearing, make it last 150k km.
For the most part, the consumers are too busy to educate themselves enough to really know. And yes this is a silly test. A Rockwell hardness test would be much more appropriate.
Absolutely, this is a just crush test for entertainment 👍
Totally agree 👍
Lexus?
Lol I'm more than 50% sure that SKF bearing is also made in China. 😅😅
is made in Italy.
I bought one
This one was made in 🇮🇹
Made in Falconer, N.Y, worked there for years,
I was more than 50 % sure that you were wrong 🙂
Skf has more than 100 factories some of them are in china. But they are not using chinese steel. I'm a SKF trained technican.
Rebuilding a YZ85 I bought a cheap rebuild kit which included cheap main bearings. I sprung for the SKF’s which said made in France? To my untrained hand they felt different rotationally. The bearings in the kit seemed rough & loose while the SKF’s felt smooth and tight. Admittedly they were sealed while the cheap kit bearings were open but even after popping off the SKF seals they still felt silky vs gritty.
I doubt those were in same price range.😊
they hold up pretty well considering how much force it needed to break
What about the price?
I do not deny the quality of SKF, but for the same model, users do not necessarily need to pursue extreme indicators.
The increase in costs caused by price differences is a priority for users.
Just like Carl Zeiss or Canon cameras and lenses , which one is better, but which one will you choose ?
Very true, SKF was 4 times the price! 👍
It all depends on the position of the opposite balls.The Chinese bearings load was applied between the two balls.
I used to inspect and repair trucks. The chinese bearings failed much sooner than we were accustomed to.
Somehow I fail to understand this test.
These ballbearings are not made to withstand these forces, they are bearings, so the right test would be to see how long it takes to wear them out.
This was just a crush test for entertainment 👍
@@HydraulicPressGuy ...bitte, auch der Preis vergleichen
Ottimo video in un piccolo tempo hai dato una grande informazione ⭐⭐⭐⭐⭐
Thank you 👍
Honestly, I expected a bigger difference. But there are different types of stress in bearings. When I find them here in Brazil, I use Timken.
Yes, I'm happy to use Timken bearings too, I have no problem with them. I work on machinery, not cars. Some of the bearings I have to install are running in extreme conditions.
What is the purpose off testing a bearing this way since its not built for that.
It’s a crush test for entertainment 👍
Can you put the cover on the chinese one and test it again? I wonder if that "weak" part actually helps with the stresses that occur in the metal parts when they are being compressed.
The Chinese one didn’t have a cover, but next time I’ll get one that does have one for a more fair test. BIG ONES next time 👍
Great! I subbed to not miss that :)
If you still have those bearings then just swap the cover (not sure if it will fit but it should)@@HydraulicPressGuy
be interesting to see how long they last at different rpm as per normal work load
You go make that channel then.
1:12 I am not surprised at all
You will be surprised when you find out the difference in prices
Very interesting and informative! Thank you and thumbs up!!!
Are some commenters missing the point? The point being QUALITY of product, not “crush” strength.
....auch der Preisunterschied soll auch vergleichbar sein
@ I couldn’t have said it better myself. Thank you!
if it cracked before, it means that it is harder, and now how long it would hold while spinning should be tested
This is a crush test for entertainment 👍
Both are plenty good enough for any mower deck spindles as long as they are greased properly from the factory. Keeping the water out and maintenance is the major factor for longevity.
Nope.... Been there done that
I had to replace all my deck spindle bearings a second time after using Chinese bearings for only a very very short period of time
It it possible to find anything from SKF that is NOT manufactured in China? I've recently replaced the shock absorber bushings and they were 100% Chinese (no markings on them whatsoever). Took them out of SKF boxes, with holograms, QRs and the like.
Worked in a bearing factory the races on the outer and inner races are case hardened at 58 rockwell, they are not made to be crushed.
what is the size of the skf ball beaing ???
After the explosion, testing an individual bearing vs the other would be interesting.
That was the plan but they were so hard they sunk into the press head! When the press heads have been through a hardening process we will try again 🤞
I worked for SKF for 5 years and never heard or saw them test a bearing like this.
Amateurs 😉
Ellas no están hechas para ser aplastadas, estan hechas para rodar
SKF manufactured in china too,😂😂😂
Knew a guy who tested engine parts for Ford. They'd put a motor on a dyno eith acfalse load of a fully loaded car at 60 mph. They ran them non-stop untill they failed. Then disassembled the motor and instead of upgrading the parts that failed, they downgraded the ones that showed littl wear to save money. That's why you can rebuild an engine with top quality parts and it's actually better than a factory new one.
Are you testing the ball bearing or the metal is made from? Are ball bearing made for the purpose you tested it for?
This was just a crush test for entertainment 👍
You must try also with Schaeffler India ltd. Bearing
What's the cost between the 2 ?
Спасибо! Было интересно ,особенно в замедленной съёмке.
Glad you enjoyed it 👌
I want to know the price difference between them.
Really enjoying these types of videos, love the sound and slow mo!!
Thank you Gemma 🤜🤛
A better test would be rotation with a load on a shaft, which is what they are intended for. Then check for wear after a time
Yes, to test which is the better bearing that would be a better test. But people want to see crushing and explosions 💥
I know someone who used to bear the pressure on the webs of the press cradle and he damaged the cradle.
👍🏼 Endurance vs Shafter or Shatter'ed won't be the same Test yett 🙏🏼
How about testing for distortion and crush against the FACES of the bearing.
Lo correcto sería construir un eje para que la carga se ejerza realmente en forma radial sobre el rodamiento
Wonderful video, we love this channel. But it would be good to put in the description that is not the way bearings are tested. Thanks guys for your cool videos!
Cheers guys!
This is a crush test for entertainment. I can’t edit the description now as it might effect the meta data and stop the views but I’m sure anyone who watches this for anything more than entertainment will know this isn’t a relevant to for bearing longevity 👍
Doesn't harder steel shatter easyer?
A very smart test from a technical point of view. Try testing your Intel CPU with a Chinese CPU next time using this method. Or Swiss watches versus Chinese ones.
price ?
Tell me how much are they please.
SKF 4 times the price!
Зпчем подшипнику держать этк нагрузку?
Gives you a hint that SKF will last longer in a spin test as well. Constant spinning under pressure will impact the material on the long run. If less well manufactured, like the Chinese bearing, it will last shorter and has less security buffer in different aspects.
This just as an answer to the people stating that this test was irrelevant for real usage....
На втором подшипнике мы не видим шарики и как они расположены относительно нагрузки
True, on my next test I will get them both in the same position 👍
В каком месте данный подшипник может испытать помимо стенда конечно такие нагрузки при ежедневной эксплуатации?
test what a bearing is for, not side pressure. What a stupid test this is...
the chinese bearing is without a sheild? also he used the cheapest chinese bearing which cost 10x less vs the most expensive one which cost 10 x more and the result is less than 40%
I bought the cheapest and the most expensive to see the difference when crushed 👍
This type of comparison is meaningful only if the design specs are stated.
I used to skate with SKF in early 90', they were the best!
For testing both must be z garade. But one is sealed and ball bearing both grade must be same here both grade mismatch but skf quality is great when compare with other products.
Would be interesting to see if a bearing that has cryogenic treatment, or wpc treatment , or shotpeen treatment compares
The better balanced,more precisely made tolerances and hardness makes a good ballbearing , not how much force can be applied on it
Before watching: SKF doesn't really care about cheap bearings like this, nor is it their strength.
SKF swedish made
SKF được sản xuất ở nhiều nước...
...and most of SKF made in China
rhe chineze is aa good as skf, for this type of testing
💥👌
I remember when Timken, SKF, Bower, and many others were made here. I run Chinese tires compared to Michelin. I get 10K less miles less out of the Chinese tires compared to the Michelin tires, Michelins are 3 1/2 times the cost. I don't like buying anything from China, but when you live on a fixed income, you make due. By the way, bought a Edlebrock manifold from Edelbrock directly for a friend, took it out of the box, on the bottom, Made in China.
Hey, if you have a hydraulic press you need to find stuff to squish, regardless of whether it makes sense or not. Please test a European block of steel vs a Chinese block of steel, with similar material properties like Rockwell harness, etc.
Made in China no longer means low quality and the price will be lower due to large production numbers. European and Made in USA just mean higher prices for the same thing.
@malcky630 What about it?
@malcky630そう、私は貴方の意見に賛成です 🙆🏻
中国共産党🇨🇳や朝鮮労働党🇰🇵の人権侵害を忘れてはいけませんね
Quality is not about where it was made instead look at the technical data of the product. The manufacturer should provide all the tech data about the product they sell (sometimes only when you ask).
Such as:
- What kind of material is that?
- What are the measurements?
- What was the process to make it?
- What are the results of the tests they have run?
You're still dealing with inconsistent quality from china
@@jonasbarbury4013 Absolutely. Although if you don't look at China as one big company, you can easily find the range of quality and price you want. Each individual company is usually quite consistent imho. Tool forums and reviewers can help a lot.
O certo era testar rodando, rolamentos não são pra aguentar esse tipo de peso, mais sim rodar
Absolutely, this is a just crush test for entertainment 👍
All well and good but when are they ever going to be stressed like that?
Never 👍
The reason why Chinese bearings have a shorter lifespan than SKF and NTN bearings is due to the difference in the strength of their shells.
Bearings used in MTB wheels that are made in China have a lifespan of about one year. NTN lasts more than 2 years.
💪🏻
What does it mean?
A problem that I have with modern bearings is that the cage for the balls is made out of plastic and it gets brittle and fails when exposed to heat.... not good !
Try NRB vs SKF
there are many china ball bearing manufacturers and brand names. their qualities and price also vary in wide range. no single maker represent the whole china technologies. this video should provide the brandname product model and price for both bearings shown in the video to make it more meaningful to the viewers
Why do you out the manufacturers name on the Swedish ball bearing but the country in the Chinese one?
Would be interesting to have a shaft, turning in the bearing and see at what point the bearing would seize. The bearings don't usually load that way.
nice video; great editing
Thanks Martin 👍
41% de diferença sem falar na durabilidade e custos dos serviços.
One made in china...the other...mexico😂😂
This one was made in Italy 🇮🇹
Did anyone hear the angelic sounds of the slowed down exploding bearings????
not really the type of load these bearings should take, but to get a fairer result you should do the test on at least two of each kind of bearing
I’d be more impressed if you used the press to apply pressure to a rolling assembly with both bearings and see which one failed to turn first.
Espero que no sea ingeniero el que ha diseñado el test, no creo que esa prueba sirva para determinar la calidad de un rodamiento, al menos de es tipo, y por otra parte uno lleva cierre lateral y el otro no, con lo que la medida ya sale falseada.
Reading the comments I am amazed by the number of people upset about this trying to defend the Chinese bearings and being negative about your testing. Have these people not seen your other videos? This was clearly just a video for entertainment. I can only assume those comments are from Chinese bots as no one could be so silly.
This is the right way to test. bearing is design to turning.
Half the price and Half the life. You get what you paid for.
skf retained balls in the cage.
check out roller needle bearings, cage material
good example gmc front axle pilot bearing . SKF BH78
Compression test done on concrete mix design and not test for bearing stress
Absolutely, this is a just crush test for entertainment 👍
So, about 1000kgs extra for the retainer rings en 300 kg for the sticky fat.
Great work sir
Best soundtrack 🤘🏼
Looks like a Porsche IMS bearing.
the same. even diffrent position of balls give diffrent crack pressure
Interesting fact that 👍
Very strange test, the main work of bearing is not to stand pressure but rotating speed and which one can stand higher temp. If the user needs to use a bearing in a machine, we must get all paremeters of this machine then we can choose a "suitable" bearing instead of the "best" one.
Another strange point is SKF compared with "CHINA" bearing, SKF is the best swidish brand, and there are hundreds of bearings in CHINA, which brand you choosed? Did you choose the best one or the worst one among all Chinese brand? This kind of comparison is pretty wired.
Do you really think this test was for anything more than entertainment?
@@HydraulicPressGuy OK, then I am too serious. I have been working in mechanical and electrical industry for more than 30 years, so....
I've never encountered a bearing being required to withstand point load pressure in the manner shown. What's the point of the vídeo?
It was a crush test for entertainment 📺
А в чем фокус то я не понял? Подшибники не работают на такой тип нагрузок а значит это испытание не о чем нам нге говорит.
It’s just an entertainment video 👍
подшиПник, братан. Через "П", я тебя умоляю
Ball bearings like this are not meant to handle this type of a load. The real test is to compare the rockwell hardness test to the outer and inner bearing races and then compare the hardness of the roller balls. Even then the hardness test between different manufacturers is a mute point. The biggest factor is the hardness of the roller balls in relation to the respective bearing races. Just about any ball bearing will last and perform well when properly lubricate. Even the highest quality bearing will fail without lubrication or contaminated lube.
I worked at Coopers split roller bearings, simply the best and easiest to fit
I've been to China eight times and they produce products as good as American or European ones and products as bad as possible. If you buy a set of 20 tools in a Chinese shop and pay $10 for them, and then they break, well, that's your fault. It's like buying a "Rolex" for $20.... And the importer is to blame for poor quality products, always wanting to pay less to earn more. In China you can go into any store, from underpants to scientific equipment, there are no poor quality products. These cheap products are available for export, along with the high quality ones, which the importer chooses.
Sem sentido este teste pois se alinhar as esferas no sentido da pressão por der bem mais força para estourar o rolamento, e como i skf esta com a capa, podem ter feto o teste com as esferas alinhadas as bases de força
This is a just crush test for entertainment 👍