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!
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
You are correct about seals, they are made from soft metal and rubber and you can bend them, but also you can easily bend them back. However no need to beel too carefull about plastic cups/sleeves - plastic is quite tough
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).
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!
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
Yes, shimano uses custom 6mm by Sunhill - thats what makes it harder to replace, standard size is 7mm. Look my other video on my channel, i replaced mine with 7mm FAG but then you have some things to sort out
This is BB-RS500-PB bottom bracket for 86,5x41 mm bb shell, more about the bearings itself is explained in my other video: th-cam.com/video/zaD6mP0cEU4/w-d-xo.html
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.
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.
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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
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!
This is my ever seen best video for BB maintenance, thanks pal!
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
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. ;)
In that case you need to lift/rotate out the thin plastic bit which has a tiny pin on it that engages in a hole on the crankshaft.
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!
There is actualy no need to take them out. I just did it because nasty rust remover and degreaser.
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 :)
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
You are correct about seals, they are made from soft metal and rubber and you can bend them, but also you can easily bend them back. However no need to beel too carefull about plastic cups/sleeves - plastic is quite tough
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).
Hola, de donde sacaste la copa para extraer el rodamiento?
@Bodul: have u more Photos of the pressfit tool removal?
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!
Brand is Unior, but every press will work
Great advice, thanks
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
Yes, shimano uses custom 6mm by Sunhill - thats what makes it harder to replace, standard size is 7mm. Look my other video on my channel, i replaced mine with 7mm FAG but then you have some things to sort out
Im kinda newbie with parts so i wanna ask what are the size of the bearings for that?
This is BB-RS500-PB bottom bracket for 86,5x41 mm bb shell, more about the bearings itself is explained in my other video: th-cam.com/video/zaD6mP0cEU4/w-d-xo.html
@@SuperBodul thank you so much! By the way are KSM Bearings good? They're the only japan made bearings i see in the online shop for my area.
I dont know anything about KSM
@@SuperBodul okay, thank you so much!
Hey. How big is the washer?
Not sure anymore, its probably mixed with many others in some box, i simply found one that fits
Pričaš ti engleski, ali sam ti po naglasku odmah čuo da si naš 😅
Min. 2:50 Boom and he scraches the plastic seal.
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.
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.
Theses bb’s are garbage!!!! Check out Garry with bb infinite to take your press fit bb to the next level!!!!!
U did great…. The bb’s are trash from the factory!