Superbly clear video which took me step-by-step through the process of straightforwardly lubricating my Shimano Nexus internal hub gear. I'll now be able to do that regularly.
Hi Adrian, thank you for your kind comment.🙏 I'm glad to hear that the video was helpful for you! Regular lubrication of the internal hub gear can really make a difference in the performance and longevity of your Shimano internal gears. If you have any more questions or need tips on bike maintenance, feel free to ask!🙂
Just here to see how someone else services their IGH. A couple things I prefer to do differently is remove all external debris and dirt from the hub prior to disassembly. Lay the wheel over a utility bucket on it's spokes so the Hub is essentially floating over the opening. Spray on a liberal amount of degreaser to loosen things up. Use a paint brush to get any stubborn bit unstuck and then rinse with water. Working with a clean assembly prior to disassembly lessens the chances of debris falling into the gear assembly. Also on both the drive and non-drive side dust caps. Place a small amount of Marine grease(it's usually Blue or Green in color) inside them. That dust cap doesn't provide a perfect seal and the grease will stop water from reaching the bearing and bearing race below it. I've pulled IGH's apart and found surface rust on bearing races and cages.
Hi, thanks for your comment and for sharing your insights. 🙏 It's good to see different approaches to servicing IGH. Your tips will definitely contribute to a more comprehensive understanding of IGH maintenance for the viewers.🙂
Thank you for explaining the maintenance procedure for this hub. My nexus 8 was slightly different, being disc brake and belt drive, but the principle and procedure was the same. It was fantastic to see so clearly how to lubricate the hub assembly. Keep up the good work. I am now the England Shimano hub lubrication expert. Thank you once again
I'm so glad the video was helpful to you! It's great that even though your hub was slightly different, you were still able to apply the same principles and procedure. Keep up the great work as the England Shimano hub lubrication expert! If you ever have more questions or need further guidance, feel free to reach out.🙂
Hi, thanks so much for your kind words! I really appreciate your support and thoughts. I completely agree with you! It's so important to have the option to maintain and repair items instead of just discarding them. Such a shame that many modern components are designed with obsolescence in mind, and it's not always clear how to properly care for them. Sustainability is key! Thanks again for sharing your perspective!🙂
This is wonderful. I’ve done this three times now, but this is the clearest instruction I’ve ever had. Try it. It’s not that difficult, but Shimano lubes are ridiculously expensive
Hi John, thank you for sharing your experience!🙏 I'm glad that you found the instructions helpful! It's great to hear that you've successfully performed the maintenance on your Shimano Nexus hub gears. If you have any more questions or need further clarification, feel free to ask.🙂
Compared to rolhoff they are cheap 😂.. don't use a car gearbox oil it's too heavy. Automatic transmission fluid dexton 2 works just as well as the Shimano blue oil dunk system I have tried both and cannot tell the difference. Be sure to give it plenty of time for excess oil to drain before reassembly otherwise it will leak and contaminate the brakes and drip on your floor. Or the alternative is dismantle the hub, clean it and degrease with Shimano IGH grease but that is alot more work 🤔.
Good info. Its not a difficult d.i.y. job. My older Nexus 7 has passed 7000 miles (11,265kms) and I've only done this job twice. If they suit your riding purpose, commuting for example, and your terrain is not too hilly, as the ratios are limited, then this is a great option. Far better lasting than derailleurs, freewheels, cassettes and there chains and chainwheels. 👍✔🇬🇧💯
Thanks for sharing your experience! It’s great to hear that your older Nexus 7 hub has been so reliable. You’re absolutely right - for commuting or relatively flat terrain, these hubs can be a fantastic choice due to their durability and low maintenance compared to traditional derailleurs and chains. They’re built to last, especially with regular maintenance, and are often less susceptible to the elements. Glad to see you're getting great mileage out of it! Thanks again for the insight! 👍
This is great! Bicycle is my main transportation and this will help me take better care and do it myself! Thanks a lot and keep up with the good work. ❤
Hi! Thank you for your kind words and support! I’m thrilled to hear that you feel more confident in taking care of your bike and enhancing your maintenance skills.🙂
i recently bought a bike with nexus 7 gear - in case i couldn´t handle the first check for myself although watching this vid .... it´s not your fault for sure. just perfect
Hi, thanks for a great comment and for sharing your experience.🙏 I'm glad the video was helpful to you, and I'm here to help if you have any questions in the future. 🙂
Thank you so much for your generous donation! I truly appreciate your support and I'm really sorry for the delayed reply. It means a lot that you took the time to contribute through the Super Thanks button-your kindness helps keep the channel going. Thanks again!
Hi. Nice video for a basic maintenance but why did you use black grease, rather than white? What if someone's hub inside needs total cleaning due to water ingress? How would you dissemble it further and flush the old oil and grease? Thanks!
Hi, and thanks for your comment. I'm pleased that you liked the video. I used black grease because that's what Shimano recommends for their hub gears (which is typically black in colour). Regarding taking the huib apart further, it's a bit tricky task. It's not really meant for full DIY disassembly. However, I will put this on my to-do list and I will see what I can do.🙂
Hi Paul, and thanks for your great comment!🙏 I'm pleased to hear that you found the video helpful. If you or anyone from your project have any more questions, or ideas for future videos feel free to reach out. Greetings from Manchester, UK🇬🇧🙂
Thank you so much for the kind words! I’m really glad the tutorial was helpful to you. It’s great to hear that you found it useful-your feedback really motivates me to keep making more content! Feel free to reach out if you need more tips or guidance!
Hey, I followed your guidance and my gf is very grateful, she says the feel is just like 5 years ago when the bike was brand new. I used a cheap transmission oil of light viscosity and it works like a charm. Keep up the good work :)
Thanks for watching! I'm really happy that you liked the video and found it helpful . If you need any more advice or have a bike-related question feel free to reach out.🙂
Hi, and thanks for your comment and sharing your tip. I had a look at both oils and unfortunately they differ from each other in both ingridients and viscosity. SAE80 oil ingridients are: - Lubricating oils: These are oils used to reduce friction and wear between moving parts. They are commonly derived from petroleum or synthetic sources.- Petroleum: This refers to crude oil or its derivatives, which are commonly used as a base for lubricating oils. - C>25, hydrotreated bright stock-based Dec-1-ene, oligomers, hydrogenated: This is a specific type of hydrocarbon compound derived from the hydrotreatment (a refining process) of bright stock oil, which is a heavy lubricating oil derived from petroleum. The "C>25" likely refers to carbon chains with more than 25 carbon atoms, indicating a high molecular weight. The "Dec-1-ene, oligomers, hydrogenated" part suggests that these are oligomeric compounds (composed of a few repeating units) derived from decene (a type of alkene) and have been hydrogenated (hydrogen atoms added to the molecule). It's kinetic viscosity at 40 40°C is: 139 mm²/s The ingredients of Shimano SG-S700 oil appear to be different from the previous ones. They are: - 1H-Benzotriazole-1-methanamine: This is a chemical compound belonging to the class of benzotriazole derivatives. Benzotriazoles are commonly used as corrosion inhibitors or UV stabilizers in various applications, including in the formulation of lubricants, coolants, and metalworking fluids. - N,N-bis(2-ethylhexyl)-4-methyl-N,N-bis(2-ethylhexyl)-5-methyl-1H-benzotriazole-1-methylamine: This is a complex chemical compound containing multiple functional groups, including ethylhexyl groups and a benzotriazole moiety. It is likely a specific derivative or variation of benzotriazole with enhanced properties, potentially used as a corrosion inhibitor or UV stabilizer in industrial applications. It's kinetic viscosity at 40°C is: 153.1 mm²/s In summary, while both sets of ingredients may be used in industrial formulations, they belong to different chemical classes and serve different purposes within those formulations. That's the reason why I would recommend to use a genuine Shimano oil to avoid leakage of oil and malfunctioning of gear shifting.
Hi, apologies for the delay in my response! I'm so glad to hear that the video helped you with replacing the internal gears on your Nexus e-bike belt drive. Thank you for subscribing-I really appreciate it! If you have any more questions or need further assistance, just let me know!
What do you do with the oil after you’ve submersed the assembly into it for the 90 seconds? Can you save it and use it again for the next planned maintenance of the hub? Or is it no longer reusable because it has been dirtied/contaminated?
seems to me the shaft in the tub requires a lot more oil than needed. Since it's so short of a rise I'd consider a custom tub with a hole for shaft and a grommet seal for the oil. a perfect seal would not even be needed for a 90 seconds rinse.....Gosh. just looked up oil price... I'd even use a plastic bag (with a hub hole) for this rinse....
I just went through this tutorial to lubricate the 8-speed Shimano hub. The oil kit is quite expensive, do you know if it's ok to save the oil for future use?
Hi Rodrigo, and thanks for your question. Shimano recommends disposing of used oil, as it may contain dirt and debris that could potentially harm your components. I hope this helps.
What sources do you reference that the special expensive Shimano oil can only be used once? To me, that seems strange and just doesn't make sense. As others have commented, if the oil costs as much as a new 3-speed hub, for example, why bother relubing, just buy a new hub! Granted, the 5, 7, and 8 speed hubs are more expensive than a can of that oil, but it still seems like an unjustifiably expensive way to relube a hub! According to the Dealer Manual DM-SG0004-09-ENG (dated Nov 2023), the oil can be re-used (see page 42). Granted, this manual is for the newer high-normal Alfine 8 and 11 speed hubs (loose shifter cable = high gear), but I don't see any reason it can't apply to the Nexus hubs. Thanks for the video though, just the same.
Hey, and thanks a lot for the kind words and the support! 🙌 I'm thrilled you enjoyed the video. If you have any suggestions or topics you'd like to see, feel free to let me know.
Hi, you're welcome! 🙂 That’s a great question. I would recommend using the official Shimano oil, as it has been specifically tested and formulated for their hub gears to deliver optimal performance. However, some viewers have shared their positive experiences with alternative oils, such as gearbox oil, and found them to work well too. Ultimately, the choice is yours, but sticking with the manufacturer's recommended oil is usually the safest bet for longevity and performance.
Hi and thanks for the comment. That's correct! The internal assembly doesn't need to be flipped for dipping the top side. The process is designed to ensure thorough coating without the need for flipping. I hope this helps🙂
Good question. I've wondered the same thing. He's just telling us what Shimano recommends. However, I think the top part of the axle assembly should also be lubricated. I would probably use grease so it stays in place. And of course, use grease for the outboard bearing.
This video is done well, but I can’t help but thinking, in every video touting internal gear hubs, the big selling point is “low maintenance!!” I’m flabbergasted. I can tell you that the amount of maintenance I’ve done on derailleur systems over 6 decades of cycle is basically zero. At most, I turned the adjusting screws a handful of times. Yet, this is a fairly significant procedure that’s supposed to be done regularly in the Shimano internal hub. Still, they do seem to work well.
I thought it was interesting because I have a bike with a Shimano Inter-7 (the model before the Nexus) that's 25 years old. I've never serviced it, and it still works perfectly. Hubs that use oil rather than grease (like Alfine and Rohloff) need to have the oil changed annually, but it's a much simpler process.
People ride Nexus hubs until they stop working and buy new wheels or a new bike. I’ve never heard of anyone getting this kinda service done for their cheap bike with 3 speed Nexus. I might do it. I propably would, but the oil and bucket set + grease + delivery is pretty much 100€. You can get a new 3 speed wheel for that.
Hi, apologies for not getting back to you sooner. You raise a valid point! While internal gear hubs are often marketed as low maintenance, they do require their own specific upkeep, which can be surprising for some. It sounds like you’ve had great luck with derailleur systems over the years, which definitely minimises the hassle. Each system has its pros and cons, but it’s good to hear that you find internal hubs to be effective despite the maintenance. Thanks for sharing your experience!🙂
Hey, thanks for your question. I never did, and Shimano doesn't mention it either in their manual. However, that doesn't mean you can't if you feel that it works for you.
The cassette joint does not need to be lubed because actually there are no sliding parts in it. The 2 parts of the CJ connect to separate splines on the axle and that's where the bearing takes place. Study the CJ mating to the axle carefully to see this. Adding lube actually makes things worse because it just attracts dirt which can affect cable adjustment in extreme cases.
Hi Dave, thanks for your question. After performing oil maintenance on Nexus 7, 8-speed, or Alfine 8-speed unit, Shimano advises applying grease to the ball bearings and pinion gears. I hope this helps.🙂
Hi, thanks for the comment! Grease isn’t recommended as a substitute for oil in systems like the drivetrain or other moving parts because it’s too thick and can interfere with smooth operation. Oil has the right viscosity to lubricate without causing excess resistance. If you’re referring to a different type of maintenance or part, let me know and I’ll be happy to help further. 😊 Hope this helps!
Hello, this is a super interesting video! I’m thinking of applying the same treatment to my Nexus 8 hub since I’m experiencing some friction in the freewheel. Do you think using transmission oil from a car would work, given that it’s much cheaper than Shimano’s oil (50€/L)? Thanks!
Hi, thanks for your comment and apologies for the delayed response. There’s been some discussion on this topic (check out the previous comments). A few people mentioned using transmission oil and were satisfied with the results. However, after comparing the specs of transmission oil and Shimano oil, I found they do have different parameters. Ultimately, it’s your decision. It’s unfortunate that Shimano’s oil is so pricey, otherwise we wouldn’t be searching for alternatives.
Thanks for your very instructive and easy to understand video! I’m wondering if I can convert my Nexus 8-speed IGH with coaster brake from grease to oil-lubricate. If yes, how can I do that? Thank you very much!
You cannot do this because Shimano 8-speeds (Nexus or Alfine) are not truly sealed. They only have dust caps. If you put oil inside, it will quickly leak out. Unlike oil, grease stays where you put it, so must be used on the outside parts of the hub, like bearings.
@@namdarbolour9890 thanks for the info. But I’ve seen Alfine hubs being lubricated by oil. So if I can figure how to make an oil seal, I can use oil to lubricate my hub
@@thieunientinlanh Just stick to grease. The Alfine hubs are a completely different design. Plus, you really don't need to regrease these every year - mine's 25 years old and still runs fine. I keep the bike indoors though so ymmv.
I would recommend once every 1 or 2 years or 5000 km, whichever comes first. Use 1 year for wet climates, 2 for dry. Maybe do the first relube after just 1000 km since it is breaking in.
Hey, thanks for the kind words and for subscribing! 🙌 As for your question, the sprocket for Shimano Nexus hubs does need to have the correct profile and mounting system. Nexus hubs typically require a specific type of sprocket that fits their internal gear system. So, you'll need to make sure you're getting the right one that's designed for the hub (e.g., a Shimano Nexus sprocket). Some after-market options might be available, but it's always best to go with the genuine part to ensure proper fit and performance. Hope this helps! Let me know if you have any other questions. 🚲
Hi, and thanks for your question. I'm glad you found the video helpful. Yes, the whole process can be done without using the vice. Having vice just makes the job much quicker and easier. Let me know how you got on lubricating your internal gear hub without using a vice. Good luck🙂
Hi, thank you for your question and apologies for the delayed response. Sorry to hear about your new hub issue. By now, I hope you've managed to resolve the problem. Could you let me know what the issue turned out to be? Warm wishes,
I have a Nexus 8 with a roller brake. Can I take the roller brake off and replace it with a dust cap that I would purchase separately? Can it be converted to a disc brake? Are there options?
Hi, and thanks for your question. Yes, you can replace your roller brake with a dust cap. I think this is its code: Y34R98100 but double-check with your hub model. Unfortunately, there isn't a way that I know to convert it to a disc brake. However, nothing stops you from doing further research. If you find something let us all know.🙂
Hi and thanks for your question. It would be great however Shimano recommends to dispose of the used oil as it may contain foreign objects such as dirt and debris.
@@cyclemaintenanceacademy LOL, Are you joking? Shimano on the contrary says in a tech tip in their Dealer's manual (for example DM-AL0001-15): "The maintenance oil is reusable. Refill it as needed. Store it with the lid closed after use."
In Shimano's Dealer's manual (for example DM-AL0001-15) there is a tech tip that says: "The maintenance oil is reusable. Refill it as needed. Store it with the lid closed after use."
Hi and thanks for your comment. Regular 75 and 90W automotive gear oils differ from Shimano Hub gear oil in both ingridients and viscosity so I would advice to use the genuine oil. However if you're unable to access the genuine replacement oil in your region, someone mentioned that SAE 80W oil is used to service Rollhof internal gear hubs and it may do the job.
video was great thank you. i have to open a hub up because it's been sitting for a decade and now i started to use it, but i'm worried what might be in there in terms of lubrication.@@cyclemaintenanceacademy it's obviously not polite of me to do this but asking for a subscription in the first second stood out to me as a bit strange too. imo driver61 does this perfectly. midway in the video. i may or may not be an untypical viewer, and i can't judge which one i am, but i think so many people would just click to another one after even a slightly long intro. your intro is long. if this isn't worthwhile, apologies and thanks for reading
I understand your point! Sometimes it may seem like there's a lot of effort involved for a solution that's meant to be low maintenance. However, this process only needs to be done once a year, and it helps ensure the best long-term performance while preventing larger maintenance issues in the future. While it might seem like a lot of effort upfront, properly caring for key components early on can save you time, money, and effort later.
I have an Shimano Nexus Hub SG- 8R31gear . The problem is that i cannot shift between the 5 and 8 acceleration. the circuit gets stuck and makes an awful noise, can anyone give me advice?
Hi, thank you for sharing your experience and apologies that Iwasn't able to get back to you sooner. You have most likely solve the problem by now but I hope you don't mind to answer the question anyway. If the hub hasn't been serviced in a while, it may need a lubricant check or internal maintenance. Shimano recommends occasional oil lubrication for their Nexus hubs, and this can prevent sticking or noise during shifting. Let me know if you've managed to solve the problem and what was causing it.
Hi, and thanks for your question. To my knowledge, Shimano recommends using the correct hub oil for their internal gear hubs, because these hubs require the specific viscosity and lubrication properties that oil provides. The oil recommended for Shimano Nexus hubs is designed to flow into the internal mechanism, providing the right level of lubrication to all moving parts. Grease, being thicker and stickier, does not flow as easily and can cause the internal components to become over-lubricated or gummed up, leading to poor performance. I hope this helps.
@@DirexDirex-u3l You're absolutely right! There are countless videos out there, each offering different expertise, perspectives, and opinions and at the end of the day, it's up to you to choose what you think is right!
Many users recommended swapping the expansive Oil with synthetic automatic transmission fluid (ATF). As the characteristics of the oil and the intended use case is the same, it seems like a good idea. As for the grease, my local bike shop tells me he use the "normal grease he uses in bike wheel bearings" with great success. I would definitively try that before going with the full replacement!
Hi, thanks for your comment! You're right that this video focuses on lubricating the Nexus 8 hub, but the lubricating process is quite similar for other Nexus hubs as well. This tutorial can serve as a general guide for maintaining them too.
Hi, and thanks for the comment. I agree that Shimano hub gear oil is extremely expensive,, and that's a shame. I'm not saying you can't but using 5W30 motor oil instead of Shimano internal gear oil is not recommended. Shimano internal gear oil is specifically formulated for bicycle internal gear systems, providing the right viscosity and lubricating properties. It's best to use the recommended oil for your bicycle's internal gears to ensure smooth operation and longevity.
Christ , no wonder people go for a derailer . The old 3 speed just had to have a few drops of oil put in the cap occasionally. This is too much work for something that's supposed to be easier 🤔
These internal hubs are much better protected to the dense cycling environment here in the netherlands. Derailers get bent easy in bike racks by other bikes next to it.
No, keeping a igh is a lot easier to do, than to clean you derailleur every time it is dirty. Learn the process and you will be fine doing this once a year. Bet you don't get away cleaning your derailleur once a year(-:
You would lose the bet . In the past 8 years on the same bike (80s shogun ) I haven't even cleaned it every year, just add oil to the chain and wipe off excess with a rag . I really do like hub gears and understand the damaged derailer problem ( though it's never happened to me) . I travelled everywhere on my Raleigh 3 speed with just a few drops dripped in now and then , it never failed@@magnushvidtjoern
Hi Edward, thanks for your comment. I get it, the older 3-speed hubs were definitely simpler to maintain. Internal gear hubs like the Shimano Nexus offer their own advantages but because of their complexity, they can be a bit more involved when it comes to servicing. Luckily they don't require servicing very often. You're absolutely right that most people use bikes with derailleur gears. But there's a reason for that. Road, gravel, MTB, and a lot of hybrids are equipped with derailleur gears because they have one huge advantage over the hub gears. They offer a larger gear ratio. So, to summarise, it's all about finding the right balance between convenience and functionality. Thanks for sharing your thoughts!🙂
Their Alfine 11 speed hub uses a syringe thata connects on the middle of rhe hub body. No taking it apart for oil changes. (these hubs use oil and not grease.)
Hi, it's because they use grease not oil to lubricate it. Just as @C-D-a-w-g mentioned Their Alfine 11 speed hub is more advanced and requires much less work to replace the oil.
Hi, and thanks for your comment. Indeed, lubricating Shimano Nexus hub gears can seem a bit complicated at first, but hopefully by following my video, it becomes much more manageable. If you have any specific questions or need clarification on any part of the process, feel free to ask!
Just continue to keep the didly crap superfluous annoying music out of your content. Clear, to the point, and time wasting annoying stuff to a minimum.
This is a ridiculous amount of work. Considering the cost of hours it's cheaper to run it until it breaks and then buy a new wheel. A new wheel is like maybe 175 euro and it lasts for 10 years at least. If you do this you have way too much time on your hands.
Thanks for sharing your perspective! For some, regular maintenance can feel like a lot of effort, especially if a wheel replacement every decade is all that's needed. But for others, taking care of a wheel can make it last even longer, keep it in top shape, and save the hassle of replacing it unexpectedly. It’s all about the balance between long-term performance and the cost of maintenance.
Superbly clear video which took me step-by-step through the process of straightforwardly lubricating my Shimano Nexus internal hub gear. I'll now be able to do that regularly.
Hi Adrian, thank you for your kind comment.🙏 I'm glad to hear that the video was helpful for you! Regular lubrication of the internal hub gear can really make a difference in the performance and longevity of your Shimano internal gears. If you have any more questions or need tips on bike maintenance, feel free to ask!🙂
The best thing about this video is that you demonstrate the service on a bike that has actually been used.
Absolutely! It's important to see maintenance on a bike in real-world condition. Glad you found it helpful!🙂
Just here to see how someone else services their IGH. A couple things I prefer to do differently is remove all external debris and dirt from the hub prior to disassembly. Lay the wheel over a utility bucket on it's spokes so the Hub is essentially floating over the opening. Spray on a liberal amount of degreaser to loosen things up. Use a paint brush to get any stubborn bit unstuck and then rinse with water. Working with a clean assembly prior to disassembly lessens the chances of debris falling into the gear assembly.
Also on both the drive and non-drive side dust caps. Place a small amount of Marine grease(it's usually Blue or Green in color) inside them. That dust cap doesn't provide a perfect seal and the grease will stop water from reaching the bearing and bearing race below it. I've pulled IGH's apart and found surface rust on bearing races and cages.
Hi, thanks for your comment and for sharing your insights. 🙏 It's good to see different approaches to servicing IGH. Your tips will definitely contribute to a more comprehensive understanding of IGH maintenance for the viewers.🙂
Thank you for explaining the maintenance procedure for this hub. My nexus 8 was slightly different, being disc brake and belt drive, but the principle and procedure was the same. It was fantastic to see so clearly how to lubricate the hub assembly. Keep up the good work. I am now the England Shimano hub lubrication expert. Thank you once again
I'm so glad the video was helpful to you! It's great that even though your hub was slightly different, you were still able to apply the same principles and procedure. Keep up the great work as the England Shimano hub lubrication expert! If you ever have more questions or need further guidance, feel free to reach out.🙂
Videos like this are important. Modern stuff is often made single use only with no intention or instruction of maintenance. That's not sustainable.
Hi, thanks so much for your kind words! I really appreciate your support and thoughts. I completely agree with you! It's so important to have the option to maintain and repair items instead of just discarding them. Such a shame that many modern components are designed with obsolescence in mind, and it's not always clear how to properly care for them. Sustainability is key! Thanks again for sharing your perspective!🙂
This is an A+ video, thank you for putting the time in to make it so good.
A+? Wow, I must have really aced this one! Thanks for the feedback, it motivates me to keep creating top-notch content.🙂
This is wonderful. I’ve done this three times now, but this is the clearest instruction I’ve ever had. Try it. It’s not that difficult, but Shimano lubes are ridiculously expensive
Hi John, thank you for sharing your experience!🙏 I'm glad that you found the instructions helpful! It's great to hear that you've successfully performed the maintenance on your Shimano Nexus hub gears. If you have any more questions or need further clarification, feel free to ask.🙂
@@cyclemaintenanceacademyI’ve heard a car hypoid gear oil will work instead of the Shimano fluid , have you any experience of this ?
Compared to rolhoff they are cheap 😂.. don't use a car gearbox oil it's too heavy. Automatic transmission fluid dexton 2 works just as well as the Shimano blue oil dunk system I have tried both and cannot tell the difference. Be sure to give it plenty of time for excess oil to drain before reassembly otherwise it will leak and contaminate the brakes and drip on your floor. Or the alternative is dismantle the hub, clean it and degrease with Shimano IGH grease but that is alot more work 🤔.
@ Thank you
Can you tell me what grease you used also ?
Very good step by step tutorial, thanks!
You're welcome Stefan! I'm glad you found the tutorial helpful. If you have any other questions or need further assistance, feel free to ask.🙂
Good info. Its not a difficult d.i.y. job. My older Nexus 7 has passed 7000 miles (11,265kms) and I've only done this job twice. If they suit your riding purpose, commuting for example, and your terrain is not too hilly, as the ratios are limited, then this is a great option. Far better lasting than derailleurs, freewheels, cassettes and there chains and chainwheels. 👍✔🇬🇧💯
Thanks for sharing your experience! It’s great to hear that your older Nexus 7 hub has been so reliable. You’re absolutely right - for commuting or relatively flat terrain, these hubs can be a fantastic choice due to their durability and low maintenance compared to traditional derailleurs and chains. They’re built to last, especially with regular maintenance, and are often less susceptible to the elements. Glad to see you're getting great mileage out of it! Thanks again for the insight! 👍
This is great! Bicycle is my main transportation and this will help me take better care and do it myself! Thanks a lot and keep up with the good work. ❤
Hi! Thank you for your kind words and support! I’m thrilled to hear that you feel more confident in taking care of your bike and enhancing your maintenance skills.🙂
... Must be one of the most helpful videos teaching us the basics in a Shimano Nexus 7 gear system...
Thank you!
Kind regards Kim, Denmark
i recently bought a bike with nexus 7 gear - in case i couldn´t handle the first check for myself although watching this vid .... it´s not your fault for sure. just perfect
Hi, thanks for a great comment and for sharing your experience.🙏 I'm glad the video was helpful to you, and I'm here to help if you have any questions in the future. 🙂
Thanks!
Thank you so much for your generous donation! I truly appreciate your support and I'm really sorry for the delayed reply. It means a lot that you took the time to contribute through the Super Thanks button-your kindness helps keep the channel going. Thanks again!
Hi. Nice video for a basic maintenance but why did you use black grease, rather than white?
What if someone's hub inside needs total cleaning due to water ingress? How would you dissemble it further and flush the old oil and grease?
Thanks!
Hi, and thanks for your comment. I'm pleased that you liked the video. I used black grease because that's what Shimano recommends for their hub gears (which is typically black in colour). Regarding taking the huib apart further, it's a bit tricky task. It's not really meant for full DIY disassembly. However, I will put this on my to-do list and I will see what I can do.🙂
It would be great to know how to fully clean the internal hub
Fantastic video, thanks. Paul McQuaid, owner of The Good Bike Project, Ireland.
Hi Paul, and thanks for your great comment!🙏 I'm pleased to hear that you found the video helpful. If you or anyone from your project have any more questions, or ideas for future videos feel free to reach out. Greetings from Manchester, UK🇬🇧🙂
I would recommend using some thin wood boards between the threads and the vise jaws to protect the threads.
Hi, apologies for not getting back to you sooner. thanks for sharing your advice with others.
WOW! Best tutorial I've seen so far!! Than you and God bless!!
Thank you so much for the kind words! I’m really glad the tutorial was helpful to you. It’s great to hear that you found it useful-your feedback really motivates me to keep making more content! Feel free to reach out if you need more tips or guidance!
Hey, I followed your guidance and my gf is very grateful, she says the feel is just like 5 years ago when the bike was brand new. I used a cheap transmission oil of light viscosity and it works like a charm. Keep up the good work :)
Such a good video for this type of thing.
Thanks for watching! I'm really happy that you liked the video and found it helpful . If you need any more advice or have a bike-related question feel free to reach out.🙂
You can also use SAE 80 oil for that, it's 1/6th the price and it's as good as shimano.
Hi, and thanks for your comment and sharing your tip. I had a look at both oils and unfortunately they differ from each other in both ingridients and viscosity.
SAE80 oil ingridients are:
- Lubricating oils: These are oils used to reduce friction and wear between moving parts. They are commonly derived from petroleum or synthetic sources.- Petroleum: This refers to crude oil or its derivatives, which are commonly used as a base for lubricating oils.
- C>25, hydrotreated bright stock-based Dec-1-ene, oligomers, hydrogenated: This is a specific type of hydrocarbon compound derived from the hydrotreatment (a refining process) of bright stock oil, which is a heavy lubricating oil derived from petroleum. The "C>25" likely refers to carbon chains with more than 25 carbon atoms, indicating a high molecular weight. The "Dec-1-ene, oligomers, hydrogenated" part suggests that these are oligomeric compounds (composed of a few repeating units) derived from decene (a type of alkene) and have been hydrogenated (hydrogen atoms added to the molecule).
It's kinetic viscosity at 40 40°C is: 139 mm²/s
The ingredients of Shimano SG-S700 oil appear to be different from the previous ones. They are:
- 1H-Benzotriazole-1-methanamine: This is a chemical compound belonging to the class of benzotriazole derivatives. Benzotriazoles are commonly used as corrosion inhibitors or UV stabilizers in various applications, including in the formulation of lubricants, coolants, and metalworking fluids.
- N,N-bis(2-ethylhexyl)-4-methyl-N,N-bis(2-ethylhexyl)-5-methyl-1H-benzotriazole-1-methylamine: This is a complex chemical compound containing multiple functional groups, including ethylhexyl groups and a benzotriazole moiety. It is likely a specific derivative or variation of benzotriazole with enhanced properties, potentially used as a corrosion inhibitor or UV stabilizer in industrial applications.
It's kinetic viscosity at 40°C is: 153.1 mm²/s
In summary, while both sets of ingredients may be used in industrial formulations, they belong to different chemical classes and serve different purposes within those formulations.
That's the reason why I would recommend to use a genuine Shimano oil to avoid leakage of oil and malfunctioning of gear shifting.
Great video, helped me figure out how to replace the internal gears on a nexus e-bike design belt drive. Earned a new subscriber for sure!
Hi, apologies for the delay in my response! I'm so glad to hear that the video helped you with replacing the internal gears on your Nexus e-bike belt drive. Thank you for subscribing-I really appreciate it! If you have any more questions or need further assistance, just let me know!
Thank you for your amazing tec video, it makes a big difference to us here in South Africa . thank you so much.
You're very welcome! I'm thrilled to hear that the video made a difference for you all the way in South Africa. Thanks so much for your support! 😊🚴♂️
What do you do with the oil after you’ve submersed the assembly into it for the 90 seconds? Can you save it and use it again for the next planned maintenance of the hub? Or is it no longer reusable because it has been dirtied/contaminated?
Hi, and thanks for your question. Shimano recommends to dispose of the used oil as it may contain foreign objects such as dirt and debris.
Thanks for clarifying what Shimano recommends. It is an unfortunate waste of a lot of (expensive) oil, but I understand the concern with contaminants.
seems to me the shaft in the tub requires a lot more oil than needed. Since it's so short of a rise I'd consider a custom tub with a hole for shaft and a grommet seal for the oil. a perfect seal would not even be needed for a 90 seconds rinse.....Gosh. just looked up oil price... I'd even use a plastic bag (with a hub hole) for this rinse....
@@chutsam7465Cheaper to just buy a new 80€ hub every time if you skip one maintenance. Or just filter the oil and keep reusing it.
You can filter it through paper paint filters also you can use cheaper SAE 80 oil, which is recommended by Rohloff.
I just went through this tutorial to lubricate the 8-speed Shimano hub. The oil kit is quite expensive, do you know if it's ok to save the oil for future use?
Hi Rodrigo, and thanks for your question. Shimano recommends disposing of used oil, as it may contain dirt and debris that could potentially harm your components. I hope this helps.
What sources do you reference that the special expensive Shimano oil can only be used once? To me, that seems strange and just doesn't make sense. As others have commented, if the oil costs as much as a new 3-speed hub, for example, why bother relubing, just buy a new hub! Granted, the 5, 7, and 8 speed hubs are more expensive than a can of that oil, but it still seems like an unjustifiably expensive way to relube a hub! According to the Dealer Manual DM-SG0004-09-ENG (dated Nov 2023), the oil can be re-used (see page 42). Granted, this manual is for the newer high-normal Alfine 8 and 11 speed hubs (loose shifter cable = high gear), but I don't see any reason it can't apply to the Nexus hubs. Thanks for the video though, just the same.
Nice work bro keeping up ♥️
Hey, and thanks a lot for the kind words and the support! 🙌 I'm thrilled you enjoyed the video. If you have any suggestions or topics you'd like to see, feel free to let me know.
Thanks a lot for the detailed video! Do you think its necessary to use shimanos oil or would a car specific gear oil be fine?
Hi, you're welcome! 🙂 That’s a great question. I would recommend using the official Shimano oil, as it has been specifically tested and formulated for their hub gears to deliver optimal performance. However, some viewers have shared their positive experiences with alternative oils, such as gearbox oil, and found them to work well too. Ultimately, the choice is yours, but sticking with the manufacturer's recommended oil is usually the safest bet for longevity and performance.
@cyclemaintenanceacademy got it! Thnaks for your reply!:)
would be great if you did the same video for a sturmy igh
Hey, thanks for the comment and the suggestion! I'll add this to my to do list. Stay tuned!🙂
Let me get this straight: you don't flip the internal assembly so that the top side gets dipped also?
Hi and thanks for the comment. That's correct! The internal assembly doesn't need to be flipped for dipping the top side. The process is designed to ensure thorough coating without the need for flipping. I hope this helps🙂
Good question. I've wondered the same thing. He's just telling us what Shimano recommends. However, I think the top part of the axle assembly should also be lubricated. I would probably use grease so it stays in place. And of course, use grease for the outboard bearing.
This video is done well, but I can’t help but thinking, in every video touting internal gear hubs, the big selling point is “low maintenance!!” I’m flabbergasted. I can tell you that the amount of maintenance I’ve done on derailleur systems over 6 decades of cycle is basically zero. At most, I turned the adjusting screws a handful of times. Yet, this is a fairly significant procedure that’s supposed to be done regularly in the Shimano internal hub. Still, they do seem to work well.
I thought it was interesting because I have a bike with a Shimano Inter-7 (the model before the Nexus) that's 25 years old. I've never serviced it, and it still works perfectly. Hubs that use oil rather than grease (like Alfine and Rohloff) need to have the oil changed annually, but it's a much simpler process.
People ride Nexus hubs until they stop working and buy new wheels or a new bike. I’ve never heard of anyone getting this kinda service done for their cheap bike with 3 speed Nexus.
I might do it. I propably would, but the oil and bucket set + grease + delivery is pretty much 100€. You can get a new 3 speed wheel for that.
Hi, apologies for not getting back to you sooner. You raise a valid point! While internal gear hubs are often marketed as low maintenance, they do require their own specific upkeep, which can be surprising for some. It sounds like you’ve had great luck with derailleur systems over the years, which definitely minimises the hassle. Each system has its pros and cons, but it’s good to hear that you find internal hubs to be effective despite the maintenance. Thanks for sharing your experience!🙂
Shouldn't you apply some grease to cassette joint?
Hey, thanks for your question. I never did, and Shimano doesn't mention it either in their manual. However, that doesn't mean you can't if you feel that it works for you.
The cassette joint does not need to be lubed because actually there are no sliding parts in it. The 2 parts of the CJ connect to separate splines on the axle and that's where the bearing takes place. Study the CJ mating to the axle carefully to see this. Adding lube actually makes things worse because it just attracts dirt which can affect cable adjustment in extreme cases.
This is for a 7 speed hub, do you grease the 8 speed hub or not as it uses ball type pawls instead of ratchet pawls
Hi Dave, thanks for your question. After performing oil maintenance on Nexus 7, 8-speed, or Alfine 8-speed unit, Shimano advises applying grease to the ball bearings and pinion gears. I hope this helps.🙂
Yes, same grease for roller clutches on high-end hubs (what you call "ball type pawls").
Pode colocar graxa no lugar do óleo por favor?
Hi, thanks for the comment! Grease isn’t recommended as a substitute for oil in systems like the drivetrain or other moving parts because it’s too thick and can interfere with smooth operation. Oil has the right viscosity to lubricate without causing excess resistance.
If you’re referring to a different type of maintenance or part, let me know and I’ll be happy to help further. 😊
Hope this helps!
Hello, this is a super interesting video! I’m thinking of applying the same treatment to my Nexus 8 hub since I’m experiencing some friction in the freewheel. Do you think using transmission oil from a car would work, given that it’s much cheaper than Shimano’s oil (50€/L)? Thanks!
Hi, thanks for your comment and apologies for the delayed response. There’s been some discussion on this topic (check out the previous comments). A few people mentioned using transmission oil and were satisfied with the results. However, after comparing the specs of transmission oil and Shimano oil, I found they do have different parameters. Ultimately, it’s your decision. It’s unfortunate that Shimano’s oil is so pricey, otherwise we wouldn’t be searching for alternatives.
.... One question: those 2 small bearings in each side - are they same size?
I believe I'll have to change them...
Thank you!
Kind regards Kim
Thanks for your very instructive and easy to understand video!
I’m wondering if I can convert my Nexus 8-speed IGH with coaster brake from grease to oil-lubricate. If yes, how can I do that?
Thank you very much!
You cannot do this because Shimano 8-speeds (Nexus or Alfine) are not truly sealed. They only have dust caps. If you put oil inside, it will quickly leak out. Unlike oil, grease stays where you put it, so must be used on the outside parts of the hub, like bearings.
@@namdarbolour9890 thanks for the info. But I’ve seen Alfine hubs being lubricated by oil. So if I can figure how to make an oil seal, I can use oil to lubricate my hub
@@thieunientinlanh Just stick to grease. The Alfine hubs are a completely different design. Plus, you really don't need to regrease these every year - mine's 25 years old and still runs fine. I keep the bike indoors though so ymmv.
Hi, thanks for your question. @namdarbolour9890 and @james-p are right, you can't. Upgrading to Alfine would be your best option.
Do you think thumb shifter will work as a replacement for the revo shifter?
Hi thnaks for your question and apologies for not getting back to you sooner. Yes, Shimano offer Nexus thumb shifters as well.
How frequently does the hub need to be taken apart and re-lubed? Thanks
I would recommend once every 1 or 2 years or 5000 km, whichever comes first. Use 1 year for wet climates, 2 for dry. Maybe do the first relube after just 1000 km since it is breaking in.
Hi, apologies for not getting back to you sooner but I can see that @namdarbolour9890 have already answered your question.🙂
Does anybody know if any sprocket is compatible with the Nexus hubs? Does it need to be a special profile? (Great videos btw. Subscribed!)
Hey, thanks for the kind words and for subscribing! 🙌
As for your question, the sprocket for Shimano Nexus hubs does need to have the correct profile and mounting system. Nexus hubs typically require a specific type of sprocket that fits their internal gear system. So, you'll need to make sure you're getting the right one that's designed for the hub (e.g., a Shimano Nexus sprocket).
Some after-market options might be available, but it's always best to go with the genuine part to ensure proper fit and performance.
Hope this helps! Let me know if you have any other questions. 🚲
Thanks for the video... my bike maintenance is overdue. Is it realistic to attempt this without a vice?
Hi, and thanks for your question. I'm glad you found the video helpful. Yes, the whole process can be done without using the vice. Having vice just makes the job much quicker and easier. Let me know how you got on lubricating your internal gear hub without using a vice. Good luck🙂
shimano nexus sg-c6001-8d new hub fitted 1 month ago, drops into idle on speeds 3,4,5,6, what can I do to fix it
Hi, thank you for your question and apologies for the delayed response. Sorry to hear about your new hub issue. By now, I hope you've managed to resolve the problem. Could you let me know what the issue turned out to be? Warm wishes,
I have a Nexus 8 with a roller brake. Can I take the roller brake off and replace it with a dust cap that I would purchase separately? Can it be converted to a disc brake? Are there options?
Hi, and thanks for your question. Yes, you can replace your roller brake with a dust cap. I think this is its code: Y34R98100 but double-check with your hub model. Unfortunately, there isn't a way that I know to convert it to a disc brake. However, nothing stops you from doing further research. If you find something let us all know.🙂
Can i reuse the oil for multiple bikes?
Hi and thanks for your question. It would be great however Shimano recommends to dispose of the used oil as it may contain foreign objects such as dirt and debris.
@@cyclemaintenanceacademy LOL, Are you joking? Shimano on the contrary says in a tech tip in their Dealer's manual (for example DM-AL0001-15): "The maintenance oil is reusable. Refill it as needed. Store it with the lid closed after use."
In Shimano's Dealer's manual (for example DM-AL0001-15) there is a tech tip that says: "The maintenance oil is reusable. Refill it as needed. Store it with the lid closed after use."
Is regular 75 or 90W automotive gear oil is good enough for the bath? I can't seem to find the Shimano one in my region.
Hi and thanks for your comment. Regular 75 and 90W automotive gear oils differ from Shimano Hub gear oil in both ingridients and viscosity so I would advice to use the genuine oil. However if you're unable to access the genuine replacement oil in your region, someone mentioned that SAE 80W oil is used to service Rollhof internal gear hubs and it may do the job.
Great tutorial. 👍
starts at 2:20
Hi, thanks for letting people know where to start the video to skip the beginning. I hope you found the video helpful. 🙂
video was great thank you. i have to open a hub up because it's been sitting for a decade and now i started to use it, but i'm worried what might be in there in terms of lubrication.@@cyclemaintenanceacademy it's obviously not polite of me to do this but asking for a subscription in the first second stood out to me as a bit strange too. imo driver61 does this perfectly. midway in the video. i may or may not be an untypical viewer, and i can't judge which one i am, but i think so many people would just click to another one after even a slightly long intro. your intro is long. if this isn't worthwhile, apologies and thanks for reading
this is a lot of work for a low maintenance solution
I understand your point! Sometimes it may seem like there's a lot of effort involved for a solution that's meant to be low maintenance. However, this process only needs to be done once a year, and it helps ensure the best long-term performance while preventing larger maintenance issues in the future. While it might seem like a lot of effort upfront, properly caring for key components early on can save you time, money, and effort later.
I have an Shimano Nexus Hub SG- 8R31gear . The problem is that i cannot shift between the 5 and 8 acceleration. the circuit gets stuck and makes an awful noise, can anyone give me advice?
Hi, thank you for sharing your experience and apologies that Iwasn't able to get back to you sooner. You have most likely solve the problem by now but I hope you don't mind to answer the question anyway. If the hub hasn't been serviced in a while, it may need a lubricant check or internal maintenance. Shimano recommends occasional oil lubrication for their Nexus hubs, and this can prevent sticking or noise during shifting. Let me know if you've managed to solve the problem and what was causing it.
Why not to use grease instead of shimano oil?
Hi, and thanks for your question. To my knowledge, Shimano recommends using the correct hub oil for their internal gear hubs, because these hubs require the specific viscosity and lubrication properties that oil provides. The oil recommended for Shimano Nexus hubs is designed to flow into the internal mechanism, providing the right level of lubrication to all moving parts. Grease, being thicker and stickier, does not flow as easily and can cause the internal components to become over-lubricated or gummed up, leading to poor performance.
I hope this helps.
@@cyclemaintenanceacademy there's tons of videos where people say opposite. For example that oil leaks from the hub
@@DirexDirex-u3l You're absolutely right! There are countless videos out there, each offering different expertise, perspectives, and opinions and at the end of the day, it's up to you to choose what you think is right!
the oil kit costs more than the hub itself, i think ill just replace it instead..
Hi John, thanks for the comment. It's actually an interesting alternative😀
Many users recommended swapping the expansive Oil with synthetic automatic transmission fluid (ATF). As the characteristics of the oil and the intended use case is the same, it seems like a good idea.
As for the grease, my local bike shop tells me he use the "normal grease he uses in bike wheel bearings" with great success.
I would definitively try that before going with the full replacement!
For some reason, the creators of this video failed to mention that this applies to the 8 speed Nexus hub only.
Hi, thanks for your comment! You're right that this video focuses on lubricating the Nexus 8 hub, but the lubricating process is quite similar for other Nexus hubs as well. This tutorial can serve as a general guide for maintaining them too.
IMO regular 5W30 motor oil does the exact same thing. you'll save 100 bucks on the shimano oil.
Hi, and thanks for the comment. I agree that Shimano hub gear oil is extremely expensive,, and that's a shame. I'm not saying you can't but using 5W30 motor oil instead of Shimano internal gear oil is not recommended. Shimano internal gear oil is specifically formulated for bicycle internal gear systems, providing the right viscosity and lubricating properties.
It's best to use the recommended oil for your bicycle's internal gears to ensure smooth operation and longevity.
@@cyclemaintenanceacademy you have no logic for your rationale. the viscosity is similar.
Christ , no wonder people go for a derailer . The old 3 speed just had to have a few drops of oil put in the cap occasionally. This is too much work for something that's supposed to be easier 🤔
These internal hubs are much better protected to the dense cycling environment here in the netherlands. Derailers get bent easy in bike racks by other bikes next to it.
No, keeping a igh is a lot easier to do, than to clean you derailleur every time it is dirty. Learn the process and you will be fine doing this once a year. Bet you don't get away cleaning your derailleur once a year(-:
The shimiano 3 speed IGH is indeed much easier to maintain. I suspect a full cleaning would be about the same work.
You would lose the bet . In the past 8 years on the same bike (80s shogun ) I haven't even cleaned it every year, just add oil to the chain and wipe off excess with a rag . I really do like hub gears and understand the damaged derailer problem ( though it's never happened to me) . I travelled everywhere on my Raleigh 3 speed with just a few drops dripped in now and then , it never failed@@magnushvidtjoern
Hi Edward, thanks for your comment. I get it, the older 3-speed hubs were definitely simpler to maintain. Internal gear hubs like the Shimano Nexus offer their own advantages but because of their complexity, they can be a bit more involved when it comes to servicing. Luckily they don't require servicing very often.
You're absolutely right that most people use bikes with derailleur gears. But there's a reason for that. Road, gravel, MTB, and a lot of hybrids are equipped with derailleur gears because they have one huge advantage over the hub gears. They offer a larger gear ratio.
So, to summarise, it's all about finding the right balance between convenience and functionality. Thanks for sharing your thoughts!🙂
I don't understand why shimano doesn't make this at least as easy as changing car engine oil.🙄
Their Alfine 11 speed hub uses a syringe thata connects on the middle of rhe hub body. No taking it apart for oil changes. (these hubs use oil and not grease.)
Hi, it's because they use grease not oil to lubricate it. Just as @C-D-a-w-g mentioned Their Alfine 11 speed hub is more advanced and requires much less work to replace the oil.
Man, that's complex.
Hi, and thanks for your comment. Indeed, lubricating Shimano Nexus hub gears can seem a bit complicated at first, but hopefully by following my video, it becomes much more manageable. If you have any specific questions or need clarification on any part of the process, feel free to ask!
Just continue to keep the didly crap superfluous annoying music out of your content. Clear, to the point, and time wasting annoying stuff to a minimum.
Hi, and thanks for the feedback. Got it, minimum annoying music, just clear and straight to the point content!🙂
This is a ridiculous amount of work. Considering the cost of hours it's cheaper to run it until it breaks and then buy a new wheel. A new wheel is like maybe 175 euro and it lasts for 10 years at least. If you do this you have way too much time on your hands.
Thanks for sharing your perspective! For some, regular maintenance can feel like a lot of effort, especially if a wheel replacement every decade is all that's needed. But for others, taking care of a wheel can make it last even longer, keep it in top shape, and save the hassle of replacing it unexpectedly. It’s all about the balance between long-term performance and the cost of maintenance.
Still cannot reassemble the cassette.... Hm.
Hi, sorry to hear you've been having trouble reassembling the hub. I hope you've been able to get the cassette unit back together successfully.