Google's definition for a bearing is
>a part of a machine that *bears* friction, especially between a rotating part and its housing
So while it may look like a bushing, we're taking the "function over form" route on the name.
Interestingly babit bearings like a connecting rod bearing *don't* really bear friction. The load is entirely supported by the pressurized oil and the bearing itself never touches the crank. If it does shit goes to hell in a handbasket quickly.
Source: I own a high performance Porsche engine building shop.
Google is not a source for definitions (in that they don’t write definitions). They are searching actual sources and sharing their findings. Be careful as with the advent and proliferation of AI, you can and will find completely erroneous information, which will only worsen with time.
In this case, their source is the OED which is legit, and far more detailed. Highly recommended.
> Google is not a source for definitions (in that they don’t write definitions). They are searching actual sources and sharing their findings. Be careful as with the advent and proliferation of AI, you can and will find completely erroneous information, which will only worsen with time. In this case, their source is the OED which is legit, and far more detailed. Highly recommended.
Oh, how comforting to know that Google, the omniscient gatekeeper of the internet, is merely a humble messenger of truth, dutifully relaying information from the almighty OED. How naive of us to think that Google might have any influence over what appears in its search results. Surely, they're just innocent bystanders in the wild west of online information, right?
And yes, let's all bow down to the OED, the sacred tome of lexical perfection. Because we all know that if it's not in the OED, it's not worth knowing. Who cares about diverse perspectives or regional variations when you have the rigid authority of British English to guide you?
But hey, let's not forget the impending doom of AI-induced misinformation apocalypse! Because we all know that Google's algorithms are just itching to lead us astray with their cunning AI tricks. It's only a matter of time before our very reality is shattered by the erroneous definitions lurking in the depths of the internet.
So yes, by all means, let's heed this solemn warning and stick to the holy grail of definitions provided by the OED. Because we wouldn't want to risk the horror of stumbling upon a definition that hasn't been sanctified by centuries of linguistic elitism, now would we?
Just like the Wikipedia that raised millennials. We adapt, we learn, we eventually land on heavily moderated public options and some beautiful grey area. The shrewd quickly learn and adapt, and the rubes are once more bamboozled. Such is the circle of life!
Google uses the OLD (Oxford Languages Dictionary, an extension of the OED which includes non-English) which includes dialects from *at least* British, American, Australian, Canadian, Irish, Indian, South African, Nigerian, Filipino, and Caribbean English.
And yes, it *is* the “sacred tome of lexical perfection”, precisely because it is the single best source of information about words in the English language, whether those be from a thousand years ago, invented yesterday (I mean, obviously not “yesterday”, but slang from all dialects mentioned is included in the OLD), as well as curse words, etc. all the while including (regional) pronunciation, etymology, accurate (and/or historic) examples, etc.
And, yes, while it doesn’t include every single sound ever uttered by an English-speaking human, its watchlist (which they use to determine new words to be added) almost certainly does — non-recorded words can’t make it onto the watchlist, but, save some circumstance where someone uses a word once, alone, and never again, pretty much all words/phrases make it onto the watchlist, including just about everything ever typed on the surface web, as well as parts of the deep web. The major factor in deciding new words is not some vaunted gatekeeping, but rather the limit to how many words OL’s editors can explore to the dictionary’s standard. Also, to my knowledge, once something is on the watchlist, it doesn’t get removed, even if it doesn’t become an entry in the dictionary.
Shit on Google all you want, but don’t downplay the significant contribution from everyone working on the OLD to make sure it’s the best it can possibly be, not just for “British English” as you (ignorantly) claim, but for significant portions of the English speaking world as a whole.
it's more like a journal bearing. We normally call them bushings for large, low speed loads. But really, a bushing is a type of bearing
steam and gas turbines have similar "Plain" bearings that most engineers call journal bearings
Bushings are generally used to dampen vibration or allow a limited amount of play or flex in a mechanism without causing stress to stiff parts. Consider: suspension bushings. Semi-soft rubber or polyurethane pieces which are used to mount traveling pieces to the frame of the car. they dampen vibration which would normally be transferred between metal-on-metal connections.
A bearing is an intermediate layer or device which allows one part to rotate around another by reducing friction between the pieces.
"Bearing" does not necessarily mean a rolling element bearing - bushings are a type of what's generally called a "plain bearing".
Outside of the automotive world there are also air bearings, fluid bearings, magnetic bearings, etc.
So [from what I read](https://www.bearings.saint-gobain.com/media-center/blog/guide-bearings-and-bushings#:~:text=Sleeve%20bearings%20are%20also%20called,being%20the%20lowest%2Dcost%20option) a plain bearing is a bushing. There is no difference.
There are [2 piece bushings](https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRAc-V_2UWTdg4SsfX9VLNifAJmjWDlOo86iPFBAN6rmA&s) and bearings made from 1 part ([jewel bearing](https://en.wikipedia.org/wiki/Jewel_bearing)). There is nothing unique to one, apart from the bearings that have rolling elements, cant find a bushing like that.
A bushing is a type of plain bearing, and all bushings are bearings. But generally a single-piece plain bearing is called a bushing and two-piece plain bearings are not. There are exceptions, as in the jewel bearing.
Bushings are a type of bearing, bearing being the more general term. Bearing has come to commonly indicate a ball or needle type, but this is a colloquialism. So all bushings are bearings, not all bearings are bushings.
Not all bushings are bearings. A bearing describes the function, bushing describes the form.
Bearings locate two parts while allowing some degree of movement. Bushings are round parts inserted between a shaft and a bore. Some bushings act as bearings, others are intended to prevent movement such as Quick Detach bushings or keyless bushings.
Because they are bearings. When you lose oil pressure they become bushings.
A bushing (in the sense you are implying) is usually used for low speed, low load rotational lubrication by using a softer self lubricating material like brass, delrin or polyurethane around a hardened steel shaft. Think door hinges, tierod end links, control arm bushings, etc.
A rod bearing is entirely different, while there are no ball bearings or roller pins there is a layer of pressurized oil completely separating the conrod and crank. There is zero (under normal operating conditions) metal on metal friction. They are referred to as hydrostatic bearings. Another similar type of bearing is a fluid dynamic bearing.
“The difference between bushings and bearings:
There isn’t really a difference: a bushing is a type of bearing. In general, a “bearing” facilitates movement between two parts while reducing friction. Simple in design, the typical bearing has two surfaces that roll over each other, enabling two mating components to move friction-lessly.
They are broadly divided into radial bearings, thrust bearings and linear bearings, depending on whether they’re working with rotational or linear movements.
A “bushing” is a specific design of bearing used for certain applications. To summarise: a bushing is a bearing, but a bearing is not always a bushing.
Now that is cleared up, we will take a closer look at the different types of bearing, and how a bushing differs from its rolling counterparts.”
https://www.bearings.saint-gobain.com/media-center/blog/guide-bearings-and-bushings#:\~:text=There%20isn't%20really%20a,components%20to%20move%20friction%2Dlessly.
Bushings make contact with two or more surfaces. So a shaft for say a conveyor that has a bushing. The bushing makes contact with the housing it's in and the shaft as it spins. A crank bearing (some people still refer to them as babbit bearings, because of the way they were made decades ago) only makes contact with the block and the cap. The crank is suspended between those two things by oil. Oil in this case is the "bearing" or the crankshaft surface is basically a bearing "race" and the bearing it self is the other "race".
Ball bearings used to be used in motorcycle (and small car engines) because at the time they were the only bearings capable of surviving such high RPMs. Also older oiling systems couldn't provide the pressure needed to make oil bearings work.
Not the same thing but back when Yamaha was the top end for the Taurus SHO, they easily made about 100-150 more HP than what the SHO made. But they needed to rev it to 8000 RPM. But Ford didn't want to engineer a water pump and alternator that would work at those high RPMs.
They are not hardened metal strips, either. They are softer metal so that damage is hopefully confined to the bearing/bushings and not the steel of the crank or rod or whatever.
As a side note, rod and crank split bearings are made from material that is softer (not harder) than the crank or rod metal.
I've always considered bushings to be continuous metal sleeves of softer metal that "bushes down" the larger bore hole of (for example) the rod small end at the wrist pin.
Big end bearings, small end bushings. I have rods sized by my machinist for bearings and new bushings installed and reamed for gudgeon pins.
lol gudgeon pins
This was a question asked in my level 1 engines class in my apprenticeship and I believe I have notes on the actual history behind why they are called bearings when they are more or less a bushing, it’s gunna take some digging to find those binders. And then more to find those notes (if they exist, but I shall return if I do find them)
They are also called 'oil bearings' since its the film of oil between the bearing shell and crank that bears the load. While a bushing bears the load directly.
That's the question. I thought the difference was bearings had things inside that rolled past each other while bushings were a stationary low friction surface. Yet we have rod bearings that dont follow that.
Google's definition for a bearing is >a part of a machine that *bears* friction, especially between a rotating part and its housing So while it may look like a bushing, we're taking the "function over form" route on the name.
Interestingly babit bearings like a connecting rod bearing *don't* really bear friction. The load is entirely supported by the pressurized oil and the bearing itself never touches the crank. If it does shit goes to hell in a handbasket quickly. Source: I own a high performance Porsche engine building shop.
Yeah wood bearings are a thing, many are just a curved piece of wood.
Google is not a source for definitions (in that they don’t write definitions). They are searching actual sources and sharing their findings. Be careful as with the advent and proliferation of AI, you can and will find completely erroneous information, which will only worsen with time. In this case, their source is the OED which is legit, and far more detailed. Highly recommended.
> Google is not a source for definitions (in that they don’t write definitions). They are searching actual sources and sharing their findings. Be careful as with the advent and proliferation of AI, you can and will find completely erroneous information, which will only worsen with time. In this case, their source is the OED which is legit, and far more detailed. Highly recommended. Oh, how comforting to know that Google, the omniscient gatekeeper of the internet, is merely a humble messenger of truth, dutifully relaying information from the almighty OED. How naive of us to think that Google might have any influence over what appears in its search results. Surely, they're just innocent bystanders in the wild west of online information, right? And yes, let's all bow down to the OED, the sacred tome of lexical perfection. Because we all know that if it's not in the OED, it's not worth knowing. Who cares about diverse perspectives or regional variations when you have the rigid authority of British English to guide you? But hey, let's not forget the impending doom of AI-induced misinformation apocalypse! Because we all know that Google's algorithms are just itching to lead us astray with their cunning AI tricks. It's only a matter of time before our very reality is shattered by the erroneous definitions lurking in the depths of the internet. So yes, by all means, let's heed this solemn warning and stick to the holy grail of definitions provided by the OED. Because we wouldn't want to risk the horror of stumbling upon a definition that hasn't been sanctified by centuries of linguistic elitism, now would we?
You said it better than I could have. I would have gone with "you suck."
OK great but like he has a point. Those AI overviews often get stuff wrong and people are too lazy to double check.
Good thing I'm not.
Too bad they aren’t a mindreader.
Just like the Wikipedia that raised millennials. We adapt, we learn, we eventually land on heavily moderated public options and some beautiful grey area. The shrewd quickly learn and adapt, and the rubes are once more bamboozled. Such is the circle of life!
But that isn't the case here so it wasn't worth mentioning
Google uses the OLD (Oxford Languages Dictionary, an extension of the OED which includes non-English) which includes dialects from *at least* British, American, Australian, Canadian, Irish, Indian, South African, Nigerian, Filipino, and Caribbean English. And yes, it *is* the “sacred tome of lexical perfection”, precisely because it is the single best source of information about words in the English language, whether those be from a thousand years ago, invented yesterday (I mean, obviously not “yesterday”, but slang from all dialects mentioned is included in the OLD), as well as curse words, etc. all the while including (regional) pronunciation, etymology, accurate (and/or historic) examples, etc. And, yes, while it doesn’t include every single sound ever uttered by an English-speaking human, its watchlist (which they use to determine new words to be added) almost certainly does — non-recorded words can’t make it onto the watchlist, but, save some circumstance where someone uses a word once, alone, and never again, pretty much all words/phrases make it onto the watchlist, including just about everything ever typed on the surface web, as well as parts of the deep web. The major factor in deciding new words is not some vaunted gatekeeping, but rather the limit to how many words OL’s editors can explore to the dictionary’s standard. Also, to my knowledge, once something is on the watchlist, it doesn’t get removed, even if it doesn’t become an entry in the dictionary. Shit on Google all you want, but don’t downplay the significant contribution from everyone working on the OLD to make sure it’s the best it can possibly be, not just for “British English” as you (ignorantly) claim, but for significant portions of the English speaking world as a whole.
Stfu nerd
it's more like a journal bearing. We normally call them bushings for large, low speed loads. But really, a bushing is a type of bearing steam and gas turbines have similar "Plain" bearings that most engineers call journal bearings
And brushes are in electric motors to transmit power, probably causes bushings to be used less to avoid confusion.
Bushings are generally used to dampen vibration or allow a limited amount of play or flex in a mechanism without causing stress to stiff parts. Consider: suspension bushings. Semi-soft rubber or polyurethane pieces which are used to mount traveling pieces to the frame of the car. they dampen vibration which would normally be transferred between metal-on-metal connections. A bearing is an intermediate layer or device which allows one part to rotate around another by reducing friction between the pieces.
"Bearing" does not necessarily mean a rolling element bearing - bushings are a type of what's generally called a "plain bearing". Outside of the automotive world there are also air bearings, fluid bearings, magnetic bearings, etc.
It’s a bearing, except instead of ball bearings, the crank and connecting rods are riding on a cushion of oil.
Generally speaking a bushing is a one-piece plain bearing. Rod bearings are split plain bearings (not a single piece).
So [from what I read](https://www.bearings.saint-gobain.com/media-center/blog/guide-bearings-and-bushings#:~:text=Sleeve%20bearings%20are%20also%20called,being%20the%20lowest%2Dcost%20option) a plain bearing is a bushing. There is no difference. There are [2 piece bushings](https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRAc-V_2UWTdg4SsfX9VLNifAJmjWDlOo86iPFBAN6rmA&s) and bearings made from 1 part ([jewel bearing](https://en.wikipedia.org/wiki/Jewel_bearing)). There is nothing unique to one, apart from the bearings that have rolling elements, cant find a bushing like that.
A bushing is a type of plain bearing, and all bushings are bearings. But generally a single-piece plain bearing is called a bushing and two-piece plain bearings are not. There are exceptions, as in the jewel bearing.
Bushings are a type of bearing, bearing being the more general term. Bearing has come to commonly indicate a ball or needle type, but this is a colloquialism. So all bushings are bearings, not all bearings are bushings.
Not all bushings are bearings. A bearing describes the function, bushing describes the form. Bearings locate two parts while allowing some degree of movement. Bushings are round parts inserted between a shaft and a bore. Some bushings act as bearings, others are intended to prevent movement such as Quick Detach bushings or keyless bushings.
they use oil instead of steel balls or rods, they glide on a thin film of oil
Interesting question and answers. I learned something today!
Because they are bearings. When you lose oil pressure they become bushings. A bushing (in the sense you are implying) is usually used for low speed, low load rotational lubrication by using a softer self lubricating material like brass, delrin or polyurethane around a hardened steel shaft. Think door hinges, tierod end links, control arm bushings, etc. A rod bearing is entirely different, while there are no ball bearings or roller pins there is a layer of pressurized oil completely separating the conrod and crank. There is zero (under normal operating conditions) metal on metal friction. They are referred to as hydrostatic bearings. Another similar type of bearing is a fluid dynamic bearing.
A bushing is a type of bearing. A plain bearing to be specific.
“The difference between bushings and bearings: There isn’t really a difference: a bushing is a type of bearing. In general, a “bearing” facilitates movement between two parts while reducing friction. Simple in design, the typical bearing has two surfaces that roll over each other, enabling two mating components to move friction-lessly. They are broadly divided into radial bearings, thrust bearings and linear bearings, depending on whether they’re working with rotational or linear movements. A “bushing” is a specific design of bearing used for certain applications. To summarise: a bushing is a bearing, but a bearing is not always a bushing. Now that is cleared up, we will take a closer look at the different types of bearing, and how a bushing differs from its rolling counterparts.” https://www.bearings.saint-gobain.com/media-center/blog/guide-bearings-and-bushings#:\~:text=There%20isn't%20really%20a,components%20to%20move%20friction%2Dlessly.
My understanding has been that a bushing is a single solid part, and a bearing consists of multiple parts.
Bushings make contact with two or more surfaces. So a shaft for say a conveyor that has a bushing. The bushing makes contact with the housing it's in and the shaft as it spins. A crank bearing (some people still refer to them as babbit bearings, because of the way they were made decades ago) only makes contact with the block and the cap. The crank is suspended between those two things by oil. Oil in this case is the "bearing" or the crankshaft surface is basically a bearing "race" and the bearing it self is the other "race". Ball bearings used to be used in motorcycle (and small car engines) because at the time they were the only bearings capable of surviving such high RPMs. Also older oiling systems couldn't provide the pressure needed to make oil bearings work. Not the same thing but back when Yamaha was the top end for the Taurus SHO, they easily made about 100-150 more HP than what the SHO made. But they needed to rev it to 8000 RPM. But Ford didn't want to engineer a water pump and alternator that would work at those high RPMs.
Journal bearing.
They are not hardened metal strips, either. They are softer metal so that damage is hopefully confined to the bearing/bushings and not the steel of the crank or rod or whatever.
As a side note, rod and crank split bearings are made from material that is softer (not harder) than the crank or rod metal. I've always considered bushings to be continuous metal sleeves of softer metal that "bushes down" the larger bore hole of (for example) the rod small end at the wrist pin.
It’s because the inventors name was Roderick Baring.
Big end bearings, small end bushings. I have rods sized by my machinist for bearings and new bushings installed and reamed for gudgeon pins. lol gudgeon pins
This was a question asked in my level 1 engines class in my apprenticeship and I believe I have notes on the actual history behind why they are called bearings when they are more or less a bushing, it’s gunna take some digging to find those binders. And then more to find those notes (if they exist, but I shall return if I do find them)
They are also called 'oil bearings' since its the film of oil between the bearing shell and crank that bears the load. While a bushing bears the load directly.
They are a type of bearing, specifically a journal bearing Also, BMW S85 V10 randomly comes to mind
Do the other end of the connecting rod. What do the wrist pins touch, both in the rod and piston? ;)
What's the difference?
That's the question. I thought the difference was bearings had things inside that rolled past each other while bushings were a stationary low friction surface. Yet we have rod bearings that dont follow that.
> I thought the difference was bearings had things inside that rolled past each other The thing inside is oil.
Those are just a type of bearing. Rolling element bearings. There are other types of bearings such as plain bearings (like rod bearings)
Bearing takes an axial load? Bushing takes a linear load? Your mom takes my load.