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Thank you!!

Very interesting. I am curious what the interior of the elevation pivot / bearing / worm gear assembly looks like. I wonder if anyone has disassembled that part?

You need to massage the grease in to the bearing with your thumb. It wont get past the cage by just squirting it on the top.

What if that plastic cover for me is broken? It broke on its own, and left pedal feels loose, but bearings inside still look good.

You can get 6 mm bearings.

Why are you not using any grece?

минус. так делать нельзя с подшипниками! Если выпрессовывать подшипник за внутренние кольцо, то вы тем самым убиваете его, после этого его нужно заменить, но так это дешёвая деталь, проще купить новый комплект и запрессовать. В вашем же случаи, если хотели почистить и смазать, то это можно сделать не выпрессовывая.

So actually the plastic sleeves are the failing points of Shimano pressfits and the bearings if they have not got any rust and wear could be salvaged and reused. Good to know! I went with Contec Boxfit threading presfit BB for my hardtail and a same one from Willier for my road bike , so that i can change the bearings anytime i like without all the fuss. I only wish the body of the bearing cups was stainless steel though and not aluminium cause eventually it will get worn by the harder stainless bearing outer ring.

First of all Shimano Hollowtech II cranks have a 24mm spindle , 25 mm is Campagnolo. Secondly Shimano bearings are 24x37x7 for the Hollowtech II series cranksets. Campagnolo Power Torque series use 25x37x7 commonly known as 6805 and the Ultra Torque series 25x37x6 6805 N(arrow).

Both bearing races mounted in PLASTIC...?! "Interesting" design. 💩

Hola, de donde sacaste la copa para extraer el rodamiento?

Ottima soluzione, volendo con una piccola fresa si può eliminare quello scalino di 1 mm nel tappo copri cuscinetto, ma si dev'essere molto bravi 👍

wait wait wait hold on, where do get the bearing tools specific to this bb like that expander ring

Ceramic or no???

Hey. How big is the washer?

hi, how do u find the extraction n installation tools to exchg the bearings? are they parts from BB installation/extraction tool?

Bearing c3?

Does Shimano BBR60 uses the same bearing, the 6805-2RSR? It's an Ultegra/105 BSA threaded BB.

@Bodul: have u more Photos of the pressfit tool removal?

Great video. Very informative. its striking to see how small the ball bearings are. Probably just over 3mm with gaps..What a contast to the old bottom brackets with loose 11 x 1/4" ball bearings with minimum gap supporting the axle. In your video, what size is the plastic pipe fitting? Is it a 40mm socket X 11/4" bsp male adaptor? ABS or PVC?

Great video thanks can sort out play now

2:48 what the size of pvc pipe ?

by doing so, does the plastic fitting contacts the outer sleeve of the bearing as well? If so, it will cause additional frictional forces.

Just out of curiosity, dont they sell same size and quality replacment bearings?

Thank you very much, you shared a brilliant Idea to make this thing simple to audiences, keep a good work. Excellent!!!!

Holy cow, this is much easier to understand than videos from “professionals” like park tool and gcn stuff, they always try to make videos complicated and don’t help at all. Thank you!

Nice tutorial thanks

Theses bb’s are garbage!!!! Check out Garry with bb infinite to take your press fit bb to the next level!!!!!

Nice hack, thx!

Love the sound of the clock in the background . Takes me back to grandma's house sat in front of the fire. no phones no computers but great time's

are u sure that the bearing size is really 25x37x6? I was looking for new ones and found some enduro and "noname" brand ones, NTN SKF etc. are only having 25x37x7 bearings. I am wondering if these will fit aswell although they are 1 mm thicker

This is my ever seen best video for BB maintenance, thanks pal!

Just a little tip for next time, you don't need to remove the crank arm pinch bolts fully, just loosen them until no tension is on them. ;)

Very nice video, thanks for this. I wonder if you can make one video for converting BB95 bearings (TREK carbon MTB) for use with the new DUB cranks (28.8mm spindle) of SRAM.

thanks a lot. you just safed my weekend ride with my friends, since my bearings were full of mud and bike shops are already closed

Excellent tutorial friend. I did the same with a shimano press fit box, I mounted the 25377 bearings and they go better than the original shimano since they are double sealed, not on one side like the shimano. They also rotate much more, what they rotate looks like ceramic. use the original plastic caps that you bring for the 6mm bearings, just file them with a file slowly so that they are even and fit the 7mm ones well. I got the axis of the cranks to pass smoothly through the covers and the result was incredible. I have much less resistance to pedaling and I can replace the bearings whenever they break down.

I wonder if it would be better to abandon the shimano shells and buy a chinese bottom bracket like a ztto from aliexpress. These shells are already made for the 6805 bearings. When you get the ztto BB, take out the bearings and replace with FAG or NTN high quality bearings.

Pričaš ti engleski, ali sam ti po naglasku odmah čuo da si naš 😅

I tried to lubricate my BB-72 pressfit bearings but I could not take the inner seal out. I think Shimano made it realy disassemble proof :)

Thank you for this excellent video. Like the idea with the syringe a lot! Which brand is the tool from, you’re using to reinstall the cups? Looks great!

Im kinda newbie with parts so i wanna ask what are the size of the bearings for that?

What do you call or where can i find that metal ring?

You do realize that a rubber mallet is the correct tool for pounding, right? The are bolts, not screws and I have no idea why you removed them completely.

I do not understand your language, could you provide me with the reference of the sealed bearings that replace the originals and where they can be bought by stopping the video I cannot appreciate it. It is clear to me that the dust cover must be changed. Greetings and thanks for sharing

Good contribution More please. greetings from Spain I guess it's the same for my Orbea orca M20 bb86

Min. 2:50 Boom and he scraches the plastic seal.

Great advice, thanks

I also remove the seals and clean / add grease rather than replace at least once or twice. Because there is usually not enough grease inside. But you have to be careful removing the seals as you can damage them. I have not been able to get replacement seals, which would be really helpful. Then I just use the ParkTool hammer tool to remove the bearings and replace with new ones. If I take the entire bearing out I would just replace the entire bearing as hammering them out can damage them. With your tool you can remove and then reinstall, must get one. I will look for the SKF ball bearing grease in future, good tip, I assume it is better than regular say Shimano grease at least for bearings. If you ride in the wet a lot, Morgan Blue Aquapaste is good, on the outside of the seals

Thank you, very useful and helpful video

Thanks mate, help me a lot! I dint take them out but cleaned and added grease with a pistol!