Ceramicspeed (Ceramic) bearings versus Steel Bearings... An engineering explanation

[@Guoenyi]

Surprised you didn't get objections from ceramicspeed. They were fighting back hard on fastfitnesstips channel after being called "Not worth it".

[@Hambini]

One of their UK outlets has threatened me with legal court proceedings. I told them to have a go and see how much damage they would do to their brand when they lost.

[@ameraldas3641]

well i would say for nearly all people its not worth it, there may be a few who just want something different.

[@rcg9573]

Ceramic Speed would never in a million years take on a guy like Hambini in court or anyone for that matter. Their strategy is to threaten legal action to shut people down from telling the truth about their BS claims and skewed videos without ever actually going to court. It’s all about posturing! If there ever was an actual trial case there would be a funny little thing called “discovery” and they would be forced to provide all their internal data to back up their BS performance gain claims, etc.... In open court they would lose such a case badly and be exposed big time for what they are. It would be a death sentence to their business model selling pixie dust ceramic parts at nosebleed prices based on bullshit marketing claims. They’d be dumber than dumb to ever go to any such trial.

[@razor1uk610]

@@rcg9573 in UK courts & legal system, CS could be found to be in breach of contract of sale as sold, for false advertising claims, if someone takes them (or they) go to court.

[@David-rb3tk]

@@rcg9573 Sounds a lot like how Specialized operate.

[@jpnelson7606]

There is little more satisfying than watching really smart people do really awesome (and tedious) science for the benefit of all. Huge thanks for this. Very enlightening.

[@drewpatnode6691]

Agreed. The dude is unabashed and genuinely hilarious too. His content is one of the only things that actually make me laugh out loud on a regular basis. And I always learn something. ~10:54 "If we come on to this next slide and talk about, uuhhh... it." I lost it there.

Fellow engineer here, enjoying your vids, subscribed yesterday! Good job bro. The simple bearing cage's purpose is keeping balls separated because adjacent bearing surfaces rotate opposite of each other. High precision bearing systems use alternating slightly smaller balls or rollers so they can be loaded without the need for the separation cages. Ceramic bearing applications are typically for rotation speeds in excess of 20,000 rpm as they don't expand from heat and can, therefore, run much hotter. They run hard steel (62+RC) races so corrosion is an issue, just like standard precision bearings. Stainless bearings are typically looser toleranced allowing for some environmental contamination without seizing. Standard bearings are rated ABEC 1,3,5,7, etc but the actual assembly tolerances primarily affect the outside diameter only so be careful thinking that ABEC9 is better, they won't roll as easily due to tight assembly tolerances. As a competitive racing roller skater we found that the race winners used a secret trick: buy cheap bearings, run them wet to corrode slightly, then clean & oil with superlight skate oil and they were the fastest skaters. It depends on the RPM requirements, skating & biking use very low RPM but quite high loading. Bearings are a science of their own deserving much respect.

[@firstmkb]

Well, yay me for having the same ideas to replace the cage, only like a hundred years + after engineers. Thanks for posting - it kept me from asking an ignorant question!

[@notamouse5630]

Another fellow engineer here, this makes interesting sense. Run the bearings in a way that smoothes them out and ensures loose tolerances, use low viscosity lube just slightly heavier than WD40, use low friction seals if any, and derate the lifetime to days or weeks and you have a winner. Any Cheapo will work as it wears smooth, and you don't want anything that will hurt to throw away.

[@davidburgess741]

Back in the seventies the common practice was to remove the cage and Install an extra ball into the race. The myth was this spread the load over more area. Cages were believed to be there to ease assembly. Hambini explained the true purpose of the cage. Every other ball or roller undersized makes sense to me now also. As long as we don't use turbofan engines on our bikes that dwarf rpm any bearing on a bike sees we're fine with steel bearings! No use for ceramic on bike.

[@andrewwade5604]

@@davidburgess741 Cages are there so you CAN assemble. Inner and outer are placed non concentrically and enough balls placed in the gap. the inner and outer are then placed concentrically. Now the balls cannot fall out, but the gaps would be inconsistent, hence the cage is added. The number of balls you can put in a normal bearing is defined by the geometry of the balls and inner and outer races (how many balls you can fit in with the cages non concentric) and the design of cage you can then fit around them.kzbin.info/www/bejne/n5CzY2aAa8xopZI There is such a thing as "Full compliment" bearings, where the races are jammed full, but there is a notch in the races to get the balls in. kzbin.info/www/bejne/r5yweHt8rp5mmqc

[@aguswahyudi710]

I guess thats what engineers talk about at coffee shop lol, good thing we have Hambini in this world

[@firstmkb]

What a crazy idea - to collect and USE data to inform a presentation on KZbin! I don't ride significantly, but subscribed. Thank you for raising the bar!

[@LGFITNESS1]

After 30 years of being an avid roller skater, FINALLY someone explains bearings (the physics and all else involved in bearings and cages) in a way that I can actually understand! Not a lot of “science” involved in roller skating but when it comes to knowing and understanding wheels and bearings, which is a must for avid skaters, there are so many worthless videos that I was loosing hope of finding out the difference between ceramic and steel bearings...until I came across your video. I opt for Bones Super Elite Swiss bearings, which has worked perfectly for my indoor roller skating. Thanks so much for this video. You’re on “a league of your own” and it’s much appreciated! Besides, I hate to waste my God-given time in less than appealing, completely off topic or personal bias opinions from click bait folks. Cheers from the USA and again, thanks so much!

[@tbrowniscool]

Lu! What bearings do you use these days?

[@LGFITNESS1]

@@tbrowniscool Hi! That’s a good question…My Bones (wheels) came with steel bearings. I’ve never used ceramic bearings. I miss skating!!! Our local rink has been closed to the public since the pandemic started. 😞

[@tbrowniscool]

@@LGFITNESS1 Same! It was so simple back then! Small groups enjoying skating...when I really think about how how fucked the 2000's babies it's depressing. Im 32 and remember knocking on the door of my best mate! If I could change the timeline I would pick being 18 in 1953 in the USA.. BTW anyone reading this buy some bitcoin... Its a better chance than having your amazing inflation coin..

[@LGFITNESS1]

@@tbrowniscoolThere’s pro’s and con’s to every timeline and generation…but I understand your point. By the way, wish I could afford to buy 1 bitcoin… 😂 But the bitcoin market has crashed and is pretty low at the moment compared to what it used to be. I just count on my husband’s and my own faithful “hard work” and income and try to enjoy life and be grateful (to God) in all circumstances. I do hope to roller skate again in the near future. If our local skating rink never reopens, I guess I’ll need to find roller skating rinks somewhere else…

[@tbrowniscool]

@@LGFITNESS1 hey, quick tip...buy more and don't worry. For the last 18 months I have been kicking myself why I didn't sell when the bullren manifested itself. But I also didn't sell when I was homeless in my van in January 2020. Bitcoin may suffer for the next 2 years but as I felt in 2017 its the future... Its such a tempting/logical solution!

[@theillegalimmigrant9314]

That is the most comprehensive analysis I have seen. It's interesting to see that a spin test is not a good measure of friction as that is what everyone seems to use to advertise the benefits. Ceramicspeed must be crying.

[@rcg9573]

Well remember that Ceramic Speed does not even use an unbiased so called spin test. They intentionally load the non ceramic parts they are supposedly comparing to their own with thicker more resistant grease, etc... to make the non ceramic component usually look more inefficient compared to their own product. Not only a pseudo science invalid comparison, but a completely intellectually dishonest one given how they rig their so called comparison tests as well. If I run across a rider sporting their snake oil products I just laugh at them. If they ask why I’m laughing I’ll actually tell them why too. 🥴😊😊

[@AndyRRR0791]

The reason the steel cages have lower friction is that they hold the bearings at their point/axis of rotation whereas the polymer cages snap onto and contact the balls at their rolling periphery

[@achedrien5477]

This guy saved 109 000 cyclist not to go bankrupt because of ceramic speed marketing. Respect and good video and explanation 🙏

[@thedave7760]

I am not a cyclist although I have a bike. So how much money do you guys spend to save 6 FRIKIN Watts every 1000 Km? That is like what a quarter of a slice of bread or how many grams of fats??

[@veryveryintense]

@@thedave7760 I thought that was an average constant loss, so its like 6 watts being lost between cranks and wheels in real time. I don't think he would use watts to express power over time. I should say I do basically agree with you though, waste of money to consider most of these unless you are racing or your bearings have already failed, in which case go for it

[@shamuslamont100]

@@thedave7760 you're not even going to lose 6 watts between wheels and BB. Use steel, and just go harder. That's not where to spend money.

[@kalijasin]

Cyclist: a person who rides a bicycle. Definitions from Oxford Languages

[@bimmerbent]

He tried to save 109k cyclist, but 99k couldn't understand the mechanics, so they bought the Marketing and will forever justify the purchase.

[@uweclaunitzer7170]

Conclusion: Invest in good steel bearings. If you want to reduce losses, look for appropriate seals and suitable bearing cages! Well done. Appreciated!

[@lifeafterlon]

Still love these videos. Everyday I'm wading through a sea of cycling industry BS over here. We need you back, Hambini!

[@wint3rsmith42]

Excellent video, very educational, I've been a mechanical engineer for 30 years and still learned a lot here. Thanks

[@johnturnbull7798]

This is a great review of bearing technology. It covered the basics for the guys who know nothing then it went into detail giving a balanced assessment of the pros and cons for each type of bearing. If I hadnt seem this I'd almost certainly waste my time and money follwing marketing hype for ceramic bearings.

[@richardhaselwood9478]

I am not even slightly in the market for bearing upgrades, and I always assumed that Ceramic Speed were effectively snake oil, or, at least a way to make merely expensive drive trains, hideously expensive, but I never thought that they could make things worse.... Good grief. Great video. Glad I finally watched it.

[@dustyblowsgoats6584]

So how important is it to cup the balls? I’m asking for a friend...

[@zarkeh3013]

When they are on fire...

[@Jabba1625]

When they in kneeing distance

[@CEverett55]

Not as important as it is to use the correct lube...

[@zizusaid]

@@huss03 :DD

[@howienordstrom1290]

Well, I got taken by CS advertising hype. ...but not anymore! Thanks for all the time you take to educate us.

[@gplama]

Great video and brilliant information.

[@Hambini]

Thankyou!

[@andy.robinson]

KZbin has only just started serving me up your videos. They're great! I can't understand why so relatively few subscribers. Anyway, you have 1 more from me. Thanks 👍

[@stevebaker5254]

I am a bearing engineer working for one of the manufacturers highlighted in the video. Your conclusions are correct although there are some additional factors not considered or understood. For example cage clearance is one reason why you measure torque differences at low speed between pressed steel and plastic cages. Bicycle bearings ALL rotate at low speed ;-)

[@Hambini]

On the next occasion I'm in Litchfield, I will come and say hello.

[@miketorres9048]

I stumbled onto to your channel this morning, and as a consequence I've spent most of my time watching your detailed, objective, well-arranged and coherent presentations. Scientific!! Well done!! I've subscribed. Thank you!!

[@Hambini]

Mike Torres thanks for the feedback! these videos take a long time and i put a lot of effort in so your comments are valued

[@SLR6700]

Great video! We need more honest people like you in the bicycle industry. You're very bright too of course. I found your website recently while researching some bike stuff and you explanations helped me a lot. Thank you!

[@arcboy2011]

Best video on ball bearings for the cycling industry that I have seen! Thank you for explaining things so that a five year old can understand them.

[@johnbailey520]

Super high quality tech talk. The thought of Darkinstall giving same talk about all these balls frightens me.

[@Hambini]

Thankyou for the feedback.

[@deNudge]

I always wanted to know how bearings are working, with all these tiny balls between the rolls. Today I stumbled across your video and have learned a whole lot. Thank you!

[@falfield]

Good content, but what I want to compliment you on is your articulacy and English usage. When words are all we have to understand each other by, a premium is placed on our choice of them. And in contrast to those who pepper their sentences with redundant "So," and "like" and banalities such as "amazing", your clarity & fluency is a pleasure to listen to. Bravo!

[@Putitinreverseterryowlawd]

Amazing content, finally some scientific, no none sense explaination, i subscribed after à few minutes

[@thomaslane2866]

Brilliant presentation. Thanks for the info. My road guy has impressed this upon me for years. Not in the specific way you did but he knows his stuff and doesn’t rip me off. I like that

[@cyclenutter2715]

top quality video Hambini, taught me a lot... Funny going back to these old vids and not hear you swear lol. Full watch from me :)

[@michaelmann3636]

I’m a newbie to the channel respectively. I find your presentations to be some of the best on KZbin, keep up the great work.👍

[@Hambini]

I appreciate that!

[@BrowFinGarf]

What did your setup look like to measure the wattage absorbed? How did you measure these? Thanks.

[@shooting-x-ringsvideoserie7338]

Thanks for sharing your in-depth study results. You have just saved us a lot of headaches. That must have been an expensive study to perform. You are a generous and dedicated man. Best wishes for your future!

[@javandermerwe]

Great video, thank you. Question: your point about testing the bearings without load being misleading makes a lot of sense. Did you load the various bearings you tested for your analyses of power absorption at 90rpm?

[@kuanhau4323]

Well explained, I think I have a massively better understanding (in comparison) than before. Now all I need to do is find the right ntn bearing for my 2012 Mavic wheels!

[@Hambini]

thanks for the feedback

[@tonusbarronus4824]

Sorry i'm late to the party....But..What an Excellent breakdown on bearings! Thank you so much Hambini! I would love to see you do a similar vid on chains and lubrication. Wet lube and dry lube and their effects on performance and longevity of drive chains. Look forward to the next engineering masterclass my friend!!! :-}

[@Hambini]

Thanks for the feedback!

[@brianheaton5521]

Damn, came for a quick answer, experienced Ph.D level lecture. Thanks, keep up the good work.

[@mansson111]

31 people use ceramic speed.

[@Hambini]

That has tickled me...!

[@rcg9573]

Looks like it is now up to 57 easily duped and gullible fools using Ceramic Speed. LOL

[@Hambini]

up to 193 now. Useless bell ends.

[@orionmobile6545]

​@@rcg9573look who's fool now. Drag racing motorcycle,car all were using ceramic bearing now. Better lap times better mil per hour times faster mph. Whoe bimbo now huh

[@shannonharris2816]

Excellent explication. I am now empowered and informed. If one rides to burn calories though, frictional losses are irrelevant. Counterpoise: if one has mechanical sympathy, any mechanical system should be optimised. Shannon

[@deanoturn1985]

Do you think you could do a video or would have any interest in making a video on how to DIY the fastest bearing by buying a steel Bering and then replacing the grease with faster smoother grease or oil or something? Could make some interesting content.

[@Hambini]

+deanoturn1985 thanks for this. I'll take a look at the idea

[@bonzer5]

The best comparison of the steel vs ceramic bearing debate i've seen. thank you!!!!! I am always looking for the fastest and smoothest bearings for bicycles, skateboards and rollerskates. Thank you!

[@Hambini]

Thank you very much!

[@driventomadness117]

You are the lock picking lawyer of the cycling world.

[@Jabaltaya]

After many insufficient videos i ended up here looking for an answer for (inline skate) ceramic bearings. Well that's out of the way now. Many thanks!!!

[@BMH1965]

After reading and seeing many articles and videos in preparation to building a lightweight road bike I have come to the conclusion that many riders place their priorities as: fashion, tradition, and then data - and, to a larger than expected extent, this also applies to the professional riders. I think many riders will be shocked by the real world data relating to the over-priced 'ceramic' bearings. I will now start looking at some of the manufactures you highlight towards the end of this video with regard to bottom bracket bearing options.

[@Hambini]

+BMH1965 I would buy a look any day of the week now

[@anfrae25]

Thank you so much for taking the time to do this video. It was truly informational, and I appreciate you passing on the indepth analysis, and findings of your testing! Great job! I was considering ceramic bearing for a different application, and I believe the findings would be the same. Again thank you.

[@mark-1234]

6:35 - It's also a crap test because of the difference in grease used.

[@freewheeling-drifter]

Absolutely terrific video! Reminded me of systems analysis lecture: just changing one piece - in this case the ball bearings to ceramic - does you no good, because addressing the whole system - in this case the bearing assembly, was ignored!

[@foxdmulder]

I've always said bearings need to be tested under load, Gcn have brainwashed numpties. Ave done a video on ceramic vs steel bearings a year or so ago. Well worth a watch also

[@bandogbone3265]

Thanks for all your good information! Just a minor point: I suggest you get a lapel microphone. The microphone that you were using was too far away and picked up more room sound (echo and reverberation) than direct sound. Also, the sound changed a lot when the camera was moved.

[@durianriders]

I remember I worked for a bike shop who sold bling. A barrister walked in with his cervelo and started telling me how impressive his new ceramic bearings were in his zipp wheels. He told me they were about $2000. I asked him where he got them from and he pointed at my boss. After he left I asked my boss 'what the f? $2000 bearings??'. My boss who never laughed did his best to not piss himself laughing. This was back in 2004.

[@nicusorusa12345]

We are on 2021 September, any changes on your opinion about ceramic bearing? Any new video about it?

[@bigkification]

57 thumbs down... presumably employees and owners of Ceramicspeed lol I guess their bearings are only good if you are competing.... and only if you can afford to replace every 500 miles or so!

[@Geeios1]

I have over 8000 miles on my F1 ceramics...just say'in.

[@bigkification]

@@Geeios1 Nobody is denying the ceramic bearings don't last. The issue is for the price, you aren't getting many benefits. Not to mention, the low friction benefit doesn't pan out over time, it becomes the same or worse as stainless bearings that cost a fraction of the price.

[@davidlewis3924]

@RollinRat www.campagnolo.com/media/files/035_180_Catalogue_spare%20parts_tools_Campagnolo_2000_part_C.pdf Out of interest, just went back to the year 2000 Campagnolo spares catalogue. They've been using the same bearings, cups and cones for 20 years at least. I guess if it's not broken, don't fix it. The old 8-speed Record hubs were pretty bulletproof too.

[@dario3716]

Hi thank you for the video! Could you make a video about bearing maintenance? What grease, when is it too late for a bearing to be serviced etc.

[@Hambini]

I'll have a look to see what the schedule is like.

[@felixar90]

Ironically the enduro bearings have the least endurance...

[@bknapp9728]

Another outstanding, objective, data-driven assessment preventing foolish cycling investment. Thank you Hambini!

[@MrBilld75]

You are indeed correct about how bearings under load, behave differently than free spinning them with no load. That's that big difference, for sure.

[@leroyusa935]

Wow, a very excellent presentation and your expertise and the manner in which you share your knowledge is impressive. Very articulated and easy to grasp your explanation on the fundamental differences of these two bearing designs. I wish you were my college instructor back in my younger years. I would be facinated and intrigued with every one of your in depth lectures. You have me as one of your new subscribers. Thanks a million for this brilliant video.

[@jt-wy8qc]

you are smart that's what I was thinking I like steel .Ceramic it hard and will eat up the steel so what will last longer hot steel or Ceramic eating steel I think after the Ceramic eats the steel it will spin faster by hard so is its tricking people now a full Ceramic might last long but in some uses but Ceramic is so hard that it can brake easy maybe in a wheel bearing hitting rock idk I like to see testing. next we will have diamond bearings

[@richardwallinger1683]

excellent presentation .. my gas turbine has 688 ceramic GRW bearings . and they are still going strong after 20 years of occasional use in my model helicopter.

[@sabamacx]

Outstanding video, bravo and well deserving of accolades. Never expected any of the contact mechanics laws from my PhD to appear in a youtube bicycling video. Would swapping wheel bearings (say from a common DT Swiss hub) to some of the well made bearings you have examined be a worth while investment of time, or just plain vanity?

[@Hambini]

Thanks for the feedback... I don't know what DT swiss has in as OEM, if they are decent units, I would leave them in. If they are unnamed garbage then swapping them out will make the ride smoother and the wheel will roll better - but you won't notice it. The bit you will notice is the increased life of the bearings.

[@Hambini]

I'm not a fan of stainless steel bearings. By the fact they are stainless steel, they are more likely to gall (cold friction weld) than standard ones and they also have a much higher rolling friction coefficient. I'm of the opinion that the bearings should be changed more frequently. It should be noted that even stainless steel bearings will corrode if you ride in a salty environment - Coastal or Winter

[@Norman92151]

Thanks for all the hard work. You've certainly cut through the ceramic bearing hype.

[@Hambini]

Thankyou for the feedback.!

[@mirage4554]

hi. and what about cup and cone bearings? after watching this video i start to think that there are the fastest because no cage in it. thanks for video

[@bretmohler9719]

it is worth mentioning here that it is not just that they have no cage.. but that they are angled toward the loading. since, from what i have observed, the load is coming from the power part of stroke on the crank that is pitching the the bike so the BB and even the wheel hubs have a more lateral induced load and not vertical. so cage or not i have seen good info to suggest that using sealed linear bearing like these are fundamentally worse off than the angled races used for cup and cone designs. interestingly enough the cup and cone seem to outlast sealed bearings, though more services has to be performed during its life to insure that. but sealed def win on application where just keeping debris out will offset what lack of vertical load they are designed for. wet dirty salty roads.. go sealed on the BB..

[@rabishop4684]

Excellent technical explanation. Very useful for those of us who change their own bearings.

[@WHERESSS]

I don't understand how this channel and DarkInstall have so little views.

[@EllasPOSEiDON]

'Cause most of the people doesn't care about reality. Not just in cycling but in anything.

[@waynosfotos]

People don’t want to hear the truth, they just want to be believers. Example, most people believe they know something about eating and dieting, but ask them where does the fat go? All these lunch time experts have no idea. Same with most things. The power of marketing and propaganda is really unbelievable! Why it is such a big industry.

[@4vickiekaye]

Too technical for most.

[@jairoluna9822]

@@waynosfotos that right people dont like some body told them they were wrong that how human works in their head

[@fourustwentius]

Mr. Hambini, thank you sincerely for keeping this video understandable, using visuals, and considering your American viewers! Great work!

[@Hambini]

I love my american viewers they write in with some hilarious questions!

[@CamRStanford]

'Balls--which everyone should be familiar with' lolllll

[@abisaasireti65]

this needs to be shared around. Pure GOLD

[@1982aston]

fantastic video .you saved me a lot of money confirming what Darkinstall said about ceramic speed...overpriced snake oil.

[@TheDarkInstall]

danny oneill :)

[@Hambini]

You are alive!?

[@TheDarkInstall]

Hambini Performance Engineering not really mate. Still very poorly. :(

[@Hambini]

oh dear. hope you get better soon.

[@TheDarkInstall]

Hambini Performance Engineering thanks mate. This video is absolutely excellent, by the way. Can I link it into my laymans version so people interested in the full info can watch yours?

[@MTBfixHQ]

13:43 somebody please help me understand this graph comparing chinese bearings to the good ones, it shows -9 watts compared to the OEM, does this mean if I am using the OEM bearings and average 250 watts riding 1000km distance @ 35 km/h and 90 rpm I would have to average 259 watts using the chinese bearings to finish the 1000km in the same time?

[@KhunAdam]

Wonderful engineering advice, thanks Hambini. I will save money!

[@night6573]

Hello, I’m really curious to know if you could repeat this with full ceramic bearings vs the hybrids you had (steel rings with ceramic balls) thanks !

[@saynotothegreatreset]

You've got balls to mess up with ceramic speed 😂😂

[@richardtickler8555]

what could they do? go to court: theyre fucked bitch on the internet: cause more attention to the issue and make more people discover why theyre shit a mate worked at canyon when their video hit and he said the time was a hell for customer service

[@Methodical2]

Interesting. I was just at the LBS and they have two cranks setup (steel and ceramic) and they use it to to do just what you described at 6:15. I don't know if there's any preload on them though. I am sure they got many sales based off that setup.

[@howardkaye6104]

Shit, I'm getting rid of my Enduro ceramic bearings!

[@randallsmith7885]

Thank you for this very detailed breakdown. Is there a useful reference for novices on how to retrofit bearings in our own bottom brackets, wheels, etc.? So, it starts with buying the correct size and specification bearings and goes into how to make the swap. Thank you.

[@schnecks2180]

Honestly, how could you make this video without laughing? :-) God, I still must be 12.....

[@LordxJoe]

in here are balls... which i'm sure you're familiar with

[@jacksyee]

Thanks for this, I am interested in being more self reliant on bike maintenance and this is fascinating and convincing.

[@rodrigosolleropaulo7577]

Dear Hambini, Your videos are awesome. I would like to make a suggestion for a complementary video testing the Token Premium and Token Tiramic bearings. Best Regards, Rodrigo.

[@Advcrazy]

Awesome video!! Thanks for all the info!! Ceramic speed bottom brackets come with a 4-5year warranty which is why I put one on my winter/gravel bike 😂 figured they aren’t 4 times the price of the alternative BB I would have bought which probably would last a year with all the crap I ride it through in winter.

[@curvs4me]

Excellent video, ceramic is really only needed for high temperature high speed environment like a turbocharger that spins 110k rpm at 950C. A whole different animal.

[@henseleric]

@RollinRat Hambini did a clip on why cartridge bearings are faster than angular contact in bicycle wheels. You must have missed it.

[@Mace907]

@RollinRat slow day at work huh?

[@michaellitzkow8123]

I find your analysis very nice and easy to understand. Thanks for all your work on this.

[@daggyag9613]

Excellent explanation! You mentioned in 18:58 in cycling, the speed is not fast enough to take advantage of ceramic's which leads me to this question; I am very curious to know then at what speed?

[@Hambini]

Hi, you need a bearing speed of round 12,000RPM. Bike bearings such as the wheels go at less than 1,000

[@daggyag9613]

Hambini, thank you. Another question... If I put 2 bikes of the same qualities, weight and load but 1 of them fitted with ceramic hubs, which one would be faster going down the hill?

[@Hambini]

The one with the lowest friction bearings would be fastest. That isn't necessarily a ceramic bearing.

[@jasper12785]

Thanks so much, this helps a ton and cleared up A LOT. I'm loving the no-nonse, intelligent, rational, functional and practical approach, the visual aid is superb! Keep up the great work and more videos are always welcomed and greatly appreciated!! Your scientific approach and real life applications are spot on!

[@Hambini]

Thanks for the feedback

[@sgomez3047]

This really helps Ham!! I was considering Enduro... Now, I'd have to say that I'm re considering! Thanks again!

[@WaschyNumber1]

Nice video 🖖 👍 Are hybride ceramic steel bearings bearings in light load applications ther money worth? 🤔 I need some 608 bearings wher I don't want touch the bearings ever after installation, what would be a good bearing for that. 🙄

[@LiesGov]

How about 30K RPM is it better plastic or metal retainer? will metal retainer also reduce friction than using plastic and add some more rpm?

[@moisestatis5418]

What about bearings for pulley derailleur, are there good Steel options to upgrade?

[@user-gm6kw5ij9z]

Well, the famous Chris King and Enduro also manufactures ceramic bearings for various brands and with prices similar to those of Ceramic Speed. Are they all scamming us?

[@michaelevans691]

Thanks again, great video! I personally have ceramic speed because that’s what came with the bike. They seem very durable. 13K miles and still feel new.

[@malcolmcog]

If you were to post a video that claimed training harder would win more races no-one would care. But, if you post a video that claimed using secret extra special grease would give a 0.005 watt advantage per kilometer you would be the most popular youtuber ever !

[@mtnbikehead]

I did have an enduro ceramic bearing bottoms bracket on my last road bike. It was noticeably smoother than the one that I took off. Maybe the previous BB bottom bracket bearings were wearing. Anyway, I had previously upgraded the the wheels, to DuraAce C35s, and they felt like I had an emotor, because the wheels compared with the stock aluminum wheels, which felt like they were dragging in comparison while coasting. Acceleration was noticeably better, but they were lighter. I attributed most of the performance gains to the better bearing races. I was a heavier rider at 92 kg. I figured a smoother rolling surface and less deflection of inner race. Better to have good steel balls and races than crappy races with nice balls. The findings on this channel are consistent with a few others and what I have learned through trial and error.

[@bobbyhartanto3210]

What a great explanation, I am a drummer and the drum pedal which move forward & response backward (they are not rolling like bycicle pedal), which tipe of bearing would you recommend for smooth & faster action of a drum pedal? Thank you.

[@felixangelov6008]

Why do you recommend removing the seal from the inner race side? Is that not the working side? Would damaging it not lead to poor sealing down the road? Thanks!

[@InCountry6970]

The graph at 12:00 explained it perfectly for me. The extremely small ball deformation percentage makes steel and ceramic bearings very close in performance indeed at lower speeds. Nice video

[@kevinrtres]

Hambini, Thank you very,. very much for all the work you've put into this research, which most of us cannot do. The information is invaluable!

[@Hambini]

Thankyou for the feedback

[@josh33172]

Long time ago I made this exact statement "At the speed that bearings in bicycles, especially bottom brackets and headsets, there is no benefit to ceramics", and really not even in the hubs. I am not an engineer, it was just something that made sense since I always attributed the benefit of ceramic to lower friction at higher temps due to higher RPMs. The only real high RPM bearings on the bike are the jockey wheels, and I even find that to be a stretch. I am so glad a proper engineer that is generally interesting in this top took the time to apply his knowledge and experience to squash this marketing garbage. I roll my eyes everytime I walk into a bike shop and see a couple guys standing around the CeramicSpeed display spinning the jockey wheels marveling over them spinning under no load.

[@Hambini]

spot on and you hit the nail on the head.

[@jw9609]

Fabulous informative videos Hambini. Can you recommend a supplier for NTN bearings within the uk please?

[@nickbea3443]

I'll give you a clue www.hambini.com/bearings.html

[@jaymo130]

Your videos are fascinating love watching them, could you gives us a brief description of how you got into all fo this, if youve not done it before or at least show the link thanks so much

[@davidsoftley4648]

Hambini, thanks, you've just saved me a lot of money with one video. Great explanation backed up by facts and figures.

[@lesliekirk7036]

Cheers for that i have tried hybrid bearings and like you said there really not worth the money as mine was only in my hubs three weeks and they started sounding rough, but it up the good work on here as i watch all your postings

[@DLinton]

So if the inner and outer races & balls were ceramic, you'd stand a better chance? [I am more interested in avoiding rust than speed.]

[@childrensbread1308]

We lost the mega-hour wit of a Sheldon Brown but have gained a Hambini. Some folks just have more tools. Meaning, they have the raw ability to learn, do and teach what I can barely grasp... Very thankful for human beings like these.

[@MrHansBattle]

Hey this was a cool video. Surprised it took me this long to stumble across it. Thanks man!