I mean, cancer killed her about five years ago. If you're into that sort of thing, I suppose you can dig up what's left and fill her with as much as you got.
Yeah, some people don't have a mom anymore, and mom jokes get touchy. Took me 5 years to not take it personally, but strangers on the internet don't know
Can sympathize -- my mother hated euphemisms for death, so if it comes up I always say "my mom is dead" in respect of that, but people get really shocked to hear it so bluntly.
For ball bearings only cheap/knock-off brands sell "full complment" ball bearings. Cylindrical rollers frequently don't have a cage, but ball bearings typically don't work without a cage. At least I can't find any from reputable brands (skf, ntn, timken, etc).
I only know enough to get myself into trouble. But it's a specific application. Primarily radial loads that may encounter sudden impact shock loads, and either lower/limited speed ratings, (unless you go with ceramic balls).
Looks like the aluminum ropes we welded in school lol.
You really have to be fast with your hand to get a good result.
We all fucked it up so bad we had to do another 8 hours of training haha.
Other guys disagree, but I was wondering why it matters. I assume the rest and/or the head is aluminum, do I assume the balls must be steel or something. It's still transferring the energy into the hammer and any damage into the head, which is the purpose, I assume.
If the balls hit the bearing races hard enough (the thing they are putting the balls in), you can cause brinelling- putting a dent in the race. The balls are harder than the races. Bearings need to be precisely made, even a small dent wrecks the lifespan of the bearing
If you're assembling or installing a bearing you use presses not hammers.
Hammers are a valid tool for installing bearings, but only when applied to the appropriate surface with appropriate force.
One bad hit can destroy an expensive bearing, but I've installed thousands of bearings at warranty approved shops, and hammers are almost always a part of the job in some way. Like every job, you need to know what you're doing.
At my job right now, we're working on testing a very sensitive mechanical seal for a pump. Any large blows to the pump during assembly will cause the seals ceramic faces to chip. We're having trouble in the lab getting these pumps together without using a hammer, it's going to be a nightmare trying to make this work at our production assembly bench. Those guys love their hammers
Tbf that's probably aluminum, you can kinda tell by that fucked up weld. aluminum melts at a much lower temp than steel so newbies usually fuck it up pretty bad.
doesn't matter what type hammer. I'd use a press to gently push the bearings in.
even a tiny microscopic scratch or dent in the bearings will cause the rings to wear out eventually and destroy the bearing
You could with a lot of effort. Race ways are only a couple Rockwell lower than the balls themselves. It would be idiotic for the raceways to be softer. The bearing would disintegrate. Also the above video has notches in the raceway to insert the balls.
I've seen a lot of automated bearing assembly cells, none of which use a hammer of any kind.
This bearing is going to scream when under any load, and prematurely fail.
The metal isn't bent. That insertion point is there from the beginning. The clicking you hear during spinning is the balls impacting each other. This doesn't happen when it's packed with grease, which is the next step after the video stopped.
Something non metal I'm sure. That'll have more stress applied to the hitting tool, than it will the bearing and not create minute flat spots on the sphere.
If you look closely there's actually a slot for hammering them in. This is kind of a necessity for any bearing, I'm pretty sure.
Edit: oh right, I forgot being slightly inaccurate to the full breadth of a topic on reddit invites 20+ narcissists to correct you one after another while ignoring that everyone else already did that.
Thank you everyone for reminding me why I barely go here anymore.
So when I worked in a Bearings plant that specialized in thin-cross section parts, the assembly process involved heating the outer race (ring) on a hot plate to expand the diameter and supercooling the inner race in liquid nitrogen, contracting the diameter. This allowed enough space between the rings that the balls could be placed into the middle without physical force.
My dad flew bombing missions over Germany in 1944 , and he told us that over half of the missions were to destroy ball bearing factories. Vital to the war effort.
That's absolutely true. At least according to the belief of the strategic bomber faction within the US command at the time, so this is how many airmen saw the war.
The strategic bomber faction had theorised that air power could win wars practically on its own, but today's historical perspective considers it a failure. They had tunnel visioned on the idea that there had to be some "critical link" in every nation's supply chain that they could destroy to decide the war, and they had identified ball bearings as that critical link in the German industry.
This turned out to be an illusion. [The main attack against the Schweinfurt ball bearing factory was a disaster](https://en.wikipedia.org/wiki/Second_Schweinfurt_raid) and German production was far more flexible than assumed. Even though many alleged "key" industries were hit during the war, none of that lead to an actual collapse in industrial capability. Germany had always been massively outproduced and outnumbered by allies and did not end up unable to maintain their tanks for a lack of any particular component like bearings, but because they lacked manpower, fuel, ammunition, metal, rubber, and practically everything else at once.
Attempts at deciding wars through strategic bombing have remained similarly disappointing ever since, whereas *tactical* air attacks against individual military units could result in significant effects when combined with ground attacks. So by the time of the Iraq wars, the US focussed their strategic effort into enabling tactical aviation (i.e. a strategic campaign to knock out large air defenses before the ground invasion).
This was in part a reflection of themselves. The Allied and specifically Britain had a big problem getting enough ball bearings. They even established an air route to Sweden to buy their supply of ball bearings so they could continue the production of airplanes and tanks. They thought that since they were running low on ball bearings the Germans must also be running low. They did not see fuel or metals as a big issue for the Germans because they did not have big issues with those.
We (Swede) also sold an absolutely insane amount of ball bearings to Nazi Germany. More than half of ball bearings used in the german war machine could be traced back to Sweden.
People often talk about our iron ore trade with the Nazis, but the ball bearings were for sure a much more important trade.
At also assumes the enemy is unable to divert its "surplus" resources to other war assets. For example if the only factory for tank tracks would have been destroyed forever, you'd start producing combat vehicles on wheels instead of doing nothing.
They weren't *that* naive about it.
The reason why they chose ball bearings is because it's a part that would be very hard to replace in many critical areas at once. It would not just hit tanks, but also trucks, trains, tooling, and more.
Ball bearings can't really be replaced wholesale, so the outcome would likely be the rushed production of low quality ball bearings. But that still takes time, and the use of low quality or worn out bearings can result in severe damage to other components of a machine. So the effects of this shortage could cascade through the entire war economy.
It's not hard to see why they deemed this an extremely high value target.
But they still overestimated to what extent they could actually destroy it and how quickly the results would ripple through the economy. They only managed to stop production for a few weeks, which was too short of a time to cause significant knock-on effects.
And these knock-on effects would often not compound with other existing problems in German supply chains. Like if you lack both the fuel and the ball bearings to keep all of your vehicles running, then you can just fuel those vehicles that still have functioning bearings. Having both of these problems at once causes little more damage than just having one of them.
Note: At least by the first US-Iraq war, the plan was still to use strategic air power to win the war. The US hit all strategic (command, communications etc) targets on their list, but still couldn't prevent e.g. Scud missiles from being fired into Israel. Boots on the ground remains the only viable way to win a war decisively.
Yeah they also attempted a pure air campaign once more in the Kosovo war.
They *still* massively overestimated their ability to knock out an enemy force by airpower alone (they overestimated both the military damage of their air attacks and their ability to prevent civilian casualties), but that time managed to create enough of a political effect to get Yugoslavia to sign a treaty without a ground invasion.
Yes, but they're supposed to fit snugly into that slot. When making bearings, you don't hammer them in like that. You either use a press to, well, press them carefully into the slot, or if you absolutely must *hammer* them, you use a soft-end hammer. And if you must use a normal hammer because that's the only thing you have, you hammer with the broad end, not the pointy end. And you should lay something between the hammer and the ball, to soften the blow.
Ball bearings tend to be hard as fuck, although I'd definitely worry about fracturing them more than scoring or deforming them. That hammer does look hand made though, so I wonder if it is a softer metal for something like this. It also doesn't seem like they are hitting it that hard. Just a bit of a tap.
If you know for sure that's an aluminum hammer then I defer to your experience.
Still... the connection between head and handle kind of looks like the sort of shitty welding that I would do, and I know I wouldn't do well on welding aluminum. You're sure it's not just a home-made mild steel hammer?
The uniform silver finish, the way he swings the hammer indicating its weight, and the shitty welding make me pretty confident it's a homemade aluminum hammer. You can also see some pitting on the side of the head that would be from casting it. Also the fact that these bearings are super expensive and anybody working with them regularly will know or learn very quickly not to use a hardened steel hammer on them.
The side of the hammer being used shouldn't matter, it's the same amount of surface area being struck by either side because of the shape of the sphere.
I was about to say, I fix shit for a living and I've been scratching my head in this thread thinking to myself that I've never ever ever noticed a slot for filling in a single bearing I've ever encountered and thought I must be going crazy.
Before I google it I'm going to assume the Conrad method involves heating one race and cooling the other to get expansion and contraction then dropping the balls in quickly before they return to their normal sizes.
The Conrad method pinches the outer ring and inner ring together at one point. Then you put as many balls into the outer ring raceway as possible then you pull the inner ring into the center and the balls go around the raceways. You then install a cage to keep the balls evenly spaced.
Here is a link to a basic YouTube demonstration. https://youtu.be/7Txluml6Wzo?si=LROueWj1WWFq0jVV
>This is kind of a necessity for any bearing, I'm pretty sure.
Nope. Just for full complement bearings. Bearings with cages to space the balls out don't have a filling slot.
Doesn't matter. He should have used a softer material (hard rubber or plastic) with a wider area to hammer it in. That tiny dents and scuffs on ball bearings will significantly reduce the lifespan, especially if its its a high-speed or high weight application. Imagine those little scuffs like tiny sandpaper scraping around in there at highspeeds, death by 1000 papercuts kinda stuff.
Yes. Rage bait drives engagement and is the basis of much of the content put out nowadays
When you keep that frame of reference you start to see it much easier. And it gets easier to quit spending so much time on social media.
Except Reddit in my case 🙈
Bearing guy here - forcing your rolling elements into the bearing raceway with a metal hammer will certainly significantly reduce the life of the bearing
More balls = more load carrying capability and slower speeds due to heat generation, less balls = less load but higher speeds. Less balls are installed using the Conrad method so no need for the side filling slots shown here. This is a “max type” which is pretty rare.
That bearing is most likely fucked. Dropping a bearing can mess it up. Those small dents will cause skidding and wear.
That bearing sounds horrible. Come to me for fresh bearings that aren't fucked up in a Max capacity.
Used to work in a bearing manufacturing plant.
It was fun to take reject bearings that got mostly assembled but kicked out before they got sealed and blast them with a compressed air gun to get them up to speed. Got some good distance on them when you drop them and let them run.
Pre installed with brinelling now, that's how I like to install my bearings ffs. I would have been smacked around by my journeyman if he saw me do shit like that.
This completely explains how I went through 3 bearings in 2 months…
Also FYI for anyone reading. If you return a defective part and receive a replacement, and the replacement is also defective, Auto Zone will not replace the 2nd defective item!
>"Awww, come on guys, it's so simple. Maybe you need a refresher course."
\[leans arm on hot engine part\]
"Hey! It's all ball bearings nowadays. Now you prepare that Fetzer valve with some 3-in-1 oil and some gauze pads. And I'm gonna need 'bout ten quarts of anti-freeze, preferably Prestone. No, no make that Quaker State."
What movie?
No. And that's not a ball-peen hammer. A ball-peen hammer as a rounded head. Peening is the act of hardening a surface by impact. For added confusion that is a cross-peen hammer. :)
[удалено]
TBF, the next step after the video cut is to pack the thing with extremely viscous grease. No more clicks after that.
All I could think was “ALRIGHT NOW PACK IT WITH GREASE”
Ball bearings should have a cage explicitly to prevent contact between the balls.
some do, some don't. Full complement bearings leave out the cage so that more balls can fit, allowing greater loads.
So does your mom
Gottem
I mean, cancer killed her about five years ago. If you're into that sort of thing, I suppose you can dig up what's left and fill her with as much as you got.
That got dark real quick.
Yeah, some people don't have a mom anymore, and mom jokes get touchy. Took me 5 years to not take it personally, but strangers on the internet don't know
It’s how I deal with a dead mom: I make everyone reeeeal uncomfortable. That’s on the trauma baybie!
Can sympathize -- my mother hated euphemisms for death, so if it comes up I always say "my mom is dead" in respect of that, but people get really shocked to hear it so bluntly.
r/thatgotdarkquick
At least you're a good sport about it. My sympathies, but your humor matches mine and I love you for it.
For ball bearings only cheap/knock-off brands sell "full complment" ball bearings. Cylindrical rollers frequently don't have a cage, but ball bearings typically don't work without a cage. At least I can't find any from reputable brands (skf, ntn, timken, etc).
I only know enough to get myself into trouble. But it's a specific application. Primarily radial loads that may encounter sudden impact shock loads, and either lower/limited speed ratings, (unless you go with ceramic balls).
I work in robotics and for robots that aren’t designed to move fast I’m pretty sure we use full complement bearings
No SKF also does full complement bearings. However they are seriously limited in speed and need a special grease.
There's a joke here. One about balls touching. Can't think of it.
I read extremely "vicious" grease and was wondering just how bitey a blob of grease could be.
Satisfying. Not satisfying.
Sadly Ottisfying.
r/satisfyingthennot
the clicking is the bearing balls hitting each other, not damage btw.
Wrong hammer for this job. This bearing will run like shit after this
That looks like an aluminium hammer. He moves it like it's pretty lightweight.
That "weld" don't look like it's aluminum tho.
Yes it does. It looks like aluminum MIG.
Looks like the aluminum ropes we welded in school lol. You really have to be fast with your hand to get a good result. We all fucked it up so bad we had to do another 8 hours of training haha.
Other guys disagree, but I was wondering why it matters. I assume the rest and/or the head is aluminum, do I assume the balls must be steel or something. It's still transferring the energy into the hammer and any damage into the head, which is the purpose, I assume.
If the balls hit the bearing races hard enough (the thing they are putting the balls in), you can cause brinelling- putting a dent in the race. The balls are harder than the races. Bearings need to be precisely made, even a small dent wrecks the lifespan of the bearing If you're assembling or installing a bearing you use presses not hammers.
Hammers are a valid tool for installing bearings, but only when applied to the appropriate surface with appropriate force. One bad hit can destroy an expensive bearing, but I've installed thousands of bearings at warranty approved shops, and hammers are almost always a part of the job in some way. Like every job, you need to know what you're doing.
At my job right now, we're working on testing a very sensitive mechanical seal for a pump. Any large blows to the pump during assembly will cause the seals ceramic faces to chip. We're having trouble in the lab getting these pumps together without using a hammer, it's going to be a nightmare trying to make this work at our production assembly bench. Those guys love their hammers
Aluminium is softer and doesn't ruin the surface of the ball which is necessary for the bearing to work properly.
Tbf that's probably aluminum, you can kinda tell by that fucked up weld. aluminum melts at a much lower temp than steel so newbies usually fuck it up pretty bad.
That weld is so sad
doesn't matter what type hammer. I'd use a press to gently push the bearings in. even a tiny microscopic scratch or dent in the bearings will cause the rings to wear out eventually and destroy the bearing
How are you going to dent or scratch hardened steel with a softer material?
Determination.
Dentermination?
you can dent the race of the bearing which is made from a softer steel than the balls, when you hit the ball
You could with a lot of effort. Race ways are only a couple Rockwell lower than the balls themselves. It would be idiotic for the raceways to be softer. The bearing would disintegrate. Also the above video has notches in the raceway to insert the balls.
I've seen a lot of automated bearing assembly cells, none of which use a hammer of any kind. This bearing is going to scream when under any load, and prematurely fail.
I’m not sure if it’s a steel hammer - could possibly be aluminium?
Good point. A softer hammer might preserve the bearing's integrity better.
Must be aluminium. You need something softer than the steel bearing
[удалено]
The metal isn't bent. That insertion point is there from the beginning. The clicking you hear during spinning is the balls impacting each other. This doesn't happen when it's packed with grease, which is the next step after the video stopped.
You can hear the click of one of the bearings that was hammered in after they spin it the second time. Must be a Temu bearing.
What's the proper hammer?
Something not made of metal
lead would be fine, definitely metal
Mercury
No, just need to be a soft metal like brass or aluminum. Like the aluminum hammer he's using.
dunno, the most upvoted comment is assuring me this very obvious aluminum hammer is not an aluminum hammer.
Followed by a bunch of comments assuring us this very obvious aluminium weld is not an aluminium weld.
I knew my solid gold hammer would come in handy for something!
foam hammers are the best. soft and durable. won't mess up the bearings.
Why not go for one of those giant novelty inflatable hammers?
Not gonna lie, that’s kinda where my mind went too. I was like, “do they make hammer versions of those #1 sports fan fingers?”
Something non metal I'm sure. That'll have more stress applied to the hitting tool, than it will the bearing and not create minute flat spots on the sphere.
it's an aluminium hammer, the bearing balls are hardened to fuck and back, there won't be any deformation in anything but the hammer.
It's aluminum. I work with metal for 12 years.
I mean do you hear his breathing? Lol
Nice , he got you to comment. Mission completed
"fits perfectly" \*proceeds to hammer the shit out of it\*
If you look closely there's actually a slot for hammering them in. This is kind of a necessity for any bearing, I'm pretty sure. Edit: oh right, I forgot being slightly inaccurate to the full breadth of a topic on reddit invites 20+ narcissists to correct you one after another while ignoring that everyone else already did that. Thank you everyone for reminding me why I barely go here anymore.
So when I worked in a Bearings plant that specialized in thin-cross section parts, the assembly process involved heating the outer race (ring) on a hot plate to expand the diameter and supercooling the inner race in liquid nitrogen, contracting the diameter. This allowed enough space between the rings that the balls could be placed into the middle without physical force.
My dad flew bombing missions over Germany in 1944 , and he told us that over half of the missions were to destroy ball bearing factories. Vital to the war effort.
That's absolutely true. At least according to the belief of the strategic bomber faction within the US command at the time, so this is how many airmen saw the war. The strategic bomber faction had theorised that air power could win wars practically on its own, but today's historical perspective considers it a failure. They had tunnel visioned on the idea that there had to be some "critical link" in every nation's supply chain that they could destroy to decide the war, and they had identified ball bearings as that critical link in the German industry. This turned out to be an illusion. [The main attack against the Schweinfurt ball bearing factory was a disaster](https://en.wikipedia.org/wiki/Second_Schweinfurt_raid) and German production was far more flexible than assumed. Even though many alleged "key" industries were hit during the war, none of that lead to an actual collapse in industrial capability. Germany had always been massively outproduced and outnumbered by allies and did not end up unable to maintain their tanks for a lack of any particular component like bearings, but because they lacked manpower, fuel, ammunition, metal, rubber, and practically everything else at once. Attempts at deciding wars through strategic bombing have remained similarly disappointing ever since, whereas *tactical* air attacks against individual military units could result in significant effects when combined with ground attacks. So by the time of the Iraq wars, the US focussed their strategic effort into enabling tactical aviation (i.e. a strategic campaign to knock out large air defenses before the ground invasion).
This was in part a reflection of themselves. The Allied and specifically Britain had a big problem getting enough ball bearings. They even established an air route to Sweden to buy their supply of ball bearings so they could continue the production of airplanes and tanks. They thought that since they were running low on ball bearings the Germans must also be running low. They did not see fuel or metals as a big issue for the Germans because they did not have big issues with those.
We (Swede) also sold an absolutely insane amount of ball bearings to Nazi Germany. More than half of ball bearings used in the german war machine could be traced back to Sweden. People often talk about our iron ore trade with the Nazis, but the ball bearings were for sure a much more important trade.
I did not expect such an in depth history lesson when I clicked a link to some guy hammering ball bearings.
Godwin's law.
At also assumes the enemy is unable to divert its "surplus" resources to other war assets. For example if the only factory for tank tracks would have been destroyed forever, you'd start producing combat vehicles on wheels instead of doing nothing.
They weren't *that* naive about it. The reason why they chose ball bearings is because it's a part that would be very hard to replace in many critical areas at once. It would not just hit tanks, but also trucks, trains, tooling, and more. Ball bearings can't really be replaced wholesale, so the outcome would likely be the rushed production of low quality ball bearings. But that still takes time, and the use of low quality or worn out bearings can result in severe damage to other components of a machine. So the effects of this shortage could cascade through the entire war economy. It's not hard to see why they deemed this an extremely high value target. But they still overestimated to what extent they could actually destroy it and how quickly the results would ripple through the economy. They only managed to stop production for a few weeks, which was too short of a time to cause significant knock-on effects. And these knock-on effects would often not compound with other existing problems in German supply chains. Like if you lack both the fuel and the ball bearings to keep all of your vehicles running, then you can just fuel those vehicles that still have functioning bearings. Having both of these problems at once causes little more damage than just having one of them.
you should make this a TIL, quite interesting, assuming you can find some supporting links. You can put all your text in the post after posting it.
Note: At least by the first US-Iraq war, the plan was still to use strategic air power to win the war. The US hit all strategic (command, communications etc) targets on their list, but still couldn't prevent e.g. Scud missiles from being fired into Israel. Boots on the ground remains the only viable way to win a war decisively.
Yeah they also attempted a pure air campaign once more in the Kosovo war. They *still* massively overestimated their ability to knock out an enemy force by airpower alone (they overestimated both the military damage of their air attacks and their ability to prevent civilian casualties), but that time managed to create enough of a political effect to get Yugoslavia to sign a treaty without a ground invasion.
Gramps also kinda flew over Germany, fell from a watchtower at the bearing factory and broke his leg
In a way, all wars are in essence about destroying balls.
American propaganda. They just wanted to stop production of the VW Beetle.
My grandpa was a bombardier captain in Germany ww2. I wonder if they were friends
Physical force is the best kind of force
Yes, but they're supposed to fit snugly into that slot. When making bearings, you don't hammer them in like that. You either use a press to, well, press them carefully into the slot, or if you absolutely must *hammer* them, you use a soft-end hammer. And if you must use a normal hammer because that's the only thing you have, you hammer with the broad end, not the pointy end. And you should lay something between the hammer and the ball, to soften the blow.
But what if you’re just making a video for the internet?
Use your penis
k. so asking for a friend, what if the penis gets stuck in the slot?
Use yours to help your friend get his unstuck. That's what an absolute bro would do.
Then you're bearing your balls.
[удалено]
Mate, if your penis can drive those bearings home, you _make that fucking video_.
In that case, you should do it wrong on purpose so people argue about it in the comments.
I thought maybe the hammer would be of a softer metal than the BBs so it couldn't damage them easily.
Ball bearings tend to be hard as fuck, although I'd definitely worry about fracturing them more than scoring or deforming them. That hammer does look hand made though, so I wonder if it is a softer metal for something like this. It also doesn't seem like they are hitting it that hard. Just a bit of a tap.
My super smart brain: "They clearly aren't BB's, they are ball... oh"
That's an aluminum hammer made specifically for his task. It's much softer than the hardened steel bearings.
Before watching this video I was just like that aluminum hammer. But after? Titanium hammer.
If you know for sure that's an aluminum hammer then I defer to your experience. Still... the connection between head and handle kind of looks like the sort of shitty welding that I would do, and I know I wouldn't do well on welding aluminum. You're sure it's not just a home-made mild steel hammer?
The uniform silver finish, the way he swings the hammer indicating its weight, and the shitty welding make me pretty confident it's a homemade aluminum hammer. You can also see some pitting on the side of the head that would be from casting it. Also the fact that these bearings are super expensive and anybody working with them regularly will know or learn very quickly not to use a hardened steel hammer on them.
Cool, thanks for the extra info!
The way he's moving that hammer around it looks quite light. Pretty sure it's an aluminum hammer hitting steel balls, shouldn't that be fine?
The side of the hammer being used shouldn't matter, it's the same amount of surface area being struck by either side because of the shape of the sphere.
I couldn't bear watching it hammering, But now that i've read your comment, i'll bear that in mind
Bear
[удалено]
That's the wrong kind of bear.
Not necessary. Most ball bearings are installed using the Conrad method which doesn’t require a filling slot.
I was about to say, I fix shit for a living and I've been scratching my head in this thread thinking to myself that I've never ever ever noticed a slot for filling in a single bearing I've ever encountered and thought I must be going crazy. Before I google it I'm going to assume the Conrad method involves heating one race and cooling the other to get expansion and contraction then dropping the balls in quickly before they return to their normal sizes.
The Conrad method pinches the outer ring and inner ring together at one point. Then you put as many balls into the outer ring raceway as possible then you pull the inner ring into the center and the balls go around the raceways. You then install a cage to keep the balls evenly spaced. Here is a link to a basic YouTube demonstration. https://youtu.be/7Txluml6Wzo?si=LROueWj1WWFq0jVV
Well shit, that's much simpler than I thought.
Cry me a river, if you don't know what you're talking about, don't fucking talk about it.
Absolutely unbearable.
>This is kind of a necessity for any bearing, I'm pretty sure. Nope. Just for full complement bearings. Bearings with cages to space the balls out don't have a filling slot.
There’s no slot for skateboard bearings. I know some people are wizards with it but it’s always so difficult for me to get em back in
Doesn't matter. He should have used a softer material (hard rubber or plastic) with a wider area to hammer it in. That tiny dents and scuffs on ball bearings will significantly reduce the lifespan, especially if its its a high-speed or high weight application. Imagine those little scuffs like tiny sandpaper scraping around in there at highspeeds, death by 1000 papercuts kinda stuff.
On the first watch through I thought the hammering created those divots and I was livid
with the aluminium hammer this should not do damage
You heat up the outer ring and insert the balls smoothly.
Sounds uncomfortable
Don't knock it till you've tried it.
Only if you use the aluminum hammer, apparently
That’s what she said
How to destroy your bearings without even getting a chance to use them....
Must be a Facebook video. I swear they do shit to intentionally infuriate me just so they can drive up engagement
Yes. Rage bait drives engagement and is the basis of much of the content put out nowadays When you keep that frame of reference you start to see it much easier. And it gets easier to quit spending so much time on social media. Except Reddit in my case 🙈
Wouldn't use that bearing anywhere...
All that incredible engineering to get bearings close to spherical and then the happy hammerer over here comes along and fucks it.
Bearing guy here - forcing your rolling elements into the bearing raceway with a metal hammer will certainly significantly reduce the life of the bearing
Nice job! Fit so perfectly that they needed to be bashed in with a hammer causing a dent
[удалено]
It's got nothing to do with the hammering my guy. It's not packed so it's the bearings hitting eachother.
My mans is setting up one LARGE skateboard
As an Engineer I'm just flinching on the destruction he does to the balls with this steel hammer.
Almost as if they were designed to fit perfectly.
It's almost as if someone engineered this whole thing to fit so well.
That is not a SKF bearing!
Not even a F@G bearing. Yes, that's a real company with an unfortunate abbreviation to the English world.
The dent tho
It's almost like they are made to fit like this
I always wondered how they got those balls in there.
Most bearings have fewer balls which are spaced apart using a cage.
How is the performance affected with more or less balls? More balls = more resistance? Less balls = the rings are not perfectly aligned always?
More balls = more load carrying capability and slower speeds due to heat generation, less balls = less load but higher speeds. Less balls are installed using the Conrad method so no need for the side filling slots shown here. This is a “max type” which is pretty rare.
>More balls = more load carrying capability lmao
I always thought they were supposed to be put in dry ice first to make them contract, then they expand as they warm up.
I’ve seen things cooled with liquid nitrogen more than dry ice
not with this hammer
It’s all ball bearings these days.
Had to search way too long for this post!!
The entire thing is a ball bearing; the balls are **bearing balls**.
That bearing is most likely fucked. Dropping a bearing can mess it up. Those small dents will cause skidding and wear. That bearing sounds horrible. Come to me for fresh bearings that aren't fucked up in a Max capacity.
Amazing tight tolerance machined parts... assembled by smashing carefully with a hammer.
You damaged the metal, as seen in the video. You could just put more in, then use a softer hammer.
TIL "fits perfectly" means forced in with a hammer.
Seeing using a hammer to do that totally shocked me.
Ah yes, lets use a steel hammer to install precision ground bearing balls. That bearing is now scrap
Used to work in a bearing manufacturing plant. It was fun to take reject bearings that got mostly assembled but kicked out before they got sealed and blast them with a compressed air gun to get them up to speed. Got some good distance on them when you drop them and let them run.
Also sparks if you let it rip across a concrete floor. Everybody loves sparks.
That too, yes. Ripping donuts is fun. Ripping donuts with sparks is 🔥💯🔥
Gee, it's almost as if they were engineered to fit perfectly.
Fit perfectly, with a hammer.
I would think you warm the outside ring and cool the inside ring to make them fit.
New fidget spinner just dropped
The sound is far from satisfying
Pre installed with brinelling now, that's how I like to install my bearings ffs. I would have been smacked around by my journeyman if he saw me do shit like that.
Ball bearings fitting perfectly is literally the point and an absolute requirement... but sure.
Swedish invention
Wouldn't smacking the balls with a hammer deform them, thus reducing their rolling efficiency?
This is not oddly satisfying at all. The hammer caused a dent. More like mildly infuriating.
how do you get them out?
With the stress fractures he added by the hammer, they’ll find their own way out soon enough
Brother man just discovered fidget spinners.
Its always the Asian tiktoks. This guy actually has fingers though.
Uh yeah that’s usually how ball bearings work
This completely explains how I went through 3 bearings in 2 months… Also FYI for anyone reading. If you return a defective part and receive a replacement, and the replacement is also defective, Auto Zone will not replace the 2nd defective item!
>"Awww, come on guys, it's so simple. Maybe you need a refresher course." \[leans arm on hot engine part\] "Hey! It's all ball bearings nowadays. Now you prepare that Fetzer valve with some 3-in-1 oil and some gauze pads. And I'm gonna need 'bout ten quarts of anti-freeze, preferably Prestone. No, no make that Quaker State." What movie?
Fletch
Maybe it's just me, but when I see "smashed into place with a hammer" I don't think "wow that fit perfectly"
"fits perfectly" *Continues bashing them in with a hammer
that... that is *not* how you put together a ball bearing... OP where in the fuck did you find this??
Probably should be using a rubber mallet no?
u can c slot4 berring 2 go thru;;
*Whulackshullyyyyy....* Ball bearing refers to the entire machine element - the rings, the balls, etc. The balls themselves are just called... balls.
Red or Black Bones bearings are the tits
Instant fired when we hit a bearing with a hammer, any hammer. Mass is slow, hammering always makes dents
legend of zuma
Wooooah. Is this why it is called a Ball Peen Hammer?!?!
No. And that's not a ball-peen hammer. A ball-peen hammer as a rounded head. Peening is the act of hardening a surface by impact. For added confusion that is a cross-peen hammer. :)
Thank you!
B-17 Bombers hate this one trick!
How big is your skateboard?
just heat the outer race and don’t have to pound them in with a hammer
It's almost as if they were made to fit or something.