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Shimano hub maintenance interval

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Shimano hub maintenance interval

Old 04-25-15, 11:59 AM
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gsa103
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Shimano hub maintenance interval

How often do I need to go about repacking the hubs?

Shimano DuraAce C24 hubs, about 1 year old, 5000 miles. Bike is only used in sunny conditions, and never sees rain or any gravel riding. I'm at about 8k mi on the chain, and its just now starting to show any wear.

I'm inclined to give the hubs another year or so before worrying about, but was wondering what other people's opinions.
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Old 04-25-15, 12:07 PM
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Hubs are hubs....I repacked mine last fall and then again this spring after 0 miles...because it's fun...Carry on
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Old 04-25-15, 12:09 PM
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Don't wait too late on the chain. If the chain gets too worn, it will ruin the cassette. Maeasure a 12 inch length of it from pin to pin. More than 1/16th inch over the standard 12 and out it goes.
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Old 04-25-15, 12:39 PM
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Originally Posted by rpenmanparker View Post
Don't wait too late on the chain. If the chain gets too worn, it will ruin the cassette. Maeasure a 12 inch length of it from pin to pin. More than 1/16th inch over the standard 12 and out it goes.
I measure the chain once a month when I oil the chain. Its still under 0.5% stretch. Keep in mind that the bike sees basically the best conditions possible, and I keep it well lubricated. Given the mileage on the drivetrain, I'm extra paranoid about it.
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Old 04-25-15, 12:45 PM
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on my shimano hubs, in the very benign conditions i ride, i won't touch them until sometime after 10,000 miles . OTOH, on a recent nine day tour, with some rain, having been regreased before the trip, they were weeping rusty oil/grease by the time i got home.

so under some conditions i'll regrease after 800 miles and/or nine days i guess.
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Old 04-25-15, 01:03 PM
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Originally Posted by hueyhoolihan View Post
on my shimano hubs, in the very benign conditions i ride, i won't touch them until sometime after 10,000 miles . OTOH, on a recent nine day tour, with some rain, having been regreased before the trip, they were weeping rusty oil/grease by the time i got home.

so under some conditions i'll regrease after 800 miles and/or nine days i guess.
+1. It's really more up to conditions than any specific mileage or time frame.

Since I live where there is a winter , I'll use that time to repack the hubs on my road bikes even if they might not need it yet. But after a bike has been ridden or parked in the rain, I'll open up the hubs ASAP, since I might be able to reuse the balls if I get to them soon enough.
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Old 04-25-15, 01:20 PM
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Originally Posted by hueyhoolihan View Post
on my shimano hubs, in the very benign conditions i ride, i won't touch them until sometime after 10,000 miles . OTOH, on a recent nine day tour, with some rain, having been regreased before the trip, they were weeping rusty oil/grease by the time i got home.

so under some conditions i'll regrease after 800 miles and/or nine days i guess.
Thanks for the data point, since I ride in exactly the same very benign conditions.
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Old 04-25-15, 01:41 PM
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Originally Posted by gsa103 View Post
How often do I need to go about repacking the hubs?
An annual overhaul on quality cup/cone hubs such as yours will do them no harm and keep them in long smooth service.
I'm still riding 70's vintage hubs that are as smooth as new (or better) serviced every season of use that have seen lots & lots of miles.

Buy a Park (or similar) chain wear gauge (chains do not stretch, they wear) and replace at the .75 mark. Ride, lube, clean and proceed.



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Old 04-25-15, 01:49 PM
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Originally Posted by Bandera View Post
An annual overhaul on quality cup/cone hubs such as yours will do them no harm and keep them in long smooth service.
I'm still riding 70's vintage hubs that are as smooth as new (or better) serviced every season of use that have seen lots & lots of miles.

Buy a Park (or similar) chain wear gauge (chains do not stretch, they wear) and replace at the .75 mark. Ride, lube, clean and proceed.



-Bandera
I have found that once a year is plenty for hubs I use regularly with one exception. Winters are really tough on gear and I may overhaul my hubs more often depending on the conditions.
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Old 04-25-15, 11:46 PM
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My training wheels have Dura Ace hubs. I ride them in wet conditions all the time. I had them repacked at 10,000 miles. The mechanic said the grease looked brand new.
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Old 04-26-15, 08:55 AM
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Every 6 months. THe hubs on my commute bike are old Dura Ace 8 speed. Im the 3 owner and when the were passed on to me the guess was 25,000 plus miles. Ive put another 10 to 15,000 on them and they are still butter smooth.
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Old 04-26-15, 10:16 AM
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Originally Posted by FBOATSB View Post
Hubs are hubs....I repacked mine last fall and then again this spring after 0 miles...because it's fun...Carry on
+1.

And freshly repacked hubs are as good as brand new wheels it is amazing.
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