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Old 2019-03-18, 07:52 PM   #1
mrfixit
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ISIS bearing source 42x22x12, besides Unicycle.com?

Does anyone else think that Paying 10.40 for shipping a pair of bearings is way too much?

I need some ISIS bearings 42x22x12, Did anyone find them at their local bearing store? Thanks.
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Old 2019-03-18, 10:05 PM   #2
bouin-bouin
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Does anyone else think that Paying 10.40 for shipping a pair of bearings is way too much?

I need some ISIS bearings 42x22x12, Did anyone find them at their local bearing store? Thanks.
Isis bearings are not standard, you cannot find them at a local shop
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Old 2019-03-19, 01:24 AM   #3
lobbybopster
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bearings

one expression,-"e-bay"- !
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Old 2019-03-19, 01:50 AM   #4
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Isis bearings are not standard, you cannot find them at a local shop
Interesting but not surprising! I have some bicycle components which I bought just to have available in case I ever needed them and it worked out that those same components, as good as they are, then later got discontinued by the manufacturer, but at least I do have them. ISIS seems to be a great system but gotta have bearings to keep ISIS working. and so maybe stocking up on a few extra sets of bearings might be worthwhile.

Last edited by Go Uni; 2019-03-19 at 01:50 AM.
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Old 2019-03-20, 02:34 PM   #5
mowcius
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One set of bearings can happily last you a few years or so depending on how you ride so personally I just have a couple of spares from UDC in my parts box.

I've bought enough other stuff from them over the years that throwing a few sets of bearings onto an order has been no big deal.
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Old 2019-03-20, 03:50 PM   #6
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Among unicyclists ISIS is a popular system which apparently uses non-standard bearings. Now, I am not talking about going into the bearing business but having a few extra sets of those bearings on hand could not only satisfy one's own future needs but could also become a trading item among fellow unicyclists, especially if those non-standard bearings ever become non-available to the little, tiny unicycling market for which those bearings are intended. Just consider that without good bearings ISIS becomes useless.
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Old 2019-03-20, 10:41 PM   #7
lobbybopster
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wow, not an unusual size! about $8 american dollars on ebay just do a little looking.
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Old 2019-03-21, 01:43 AM   #8
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This seems like a good reason to get the real story about ISIS bearings being either standard or non-standard. Great if they are standard but worth knowing if they are not.
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Old 2019-03-21, 04:23 AM   #9
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wow, not an unusual size! about $8 american dollars on ebay just do a little looking.
I see that Unicycle.Com does sell ISIS bearings on ebay. About $30 delivered for two. That is about twice the cost of "normal" standard bearings and a little more then getting them directly from UDC. I don't see any other ebay sellers that has them.

It is strange that the bearing manufacturer does not sell them. Maybe they have some kind of restriction or just not profitable to mess with them because of the very low demand.
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Old 2019-03-22, 03:49 AM   #10
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Thanks. I ordered 10 from China for $35.00.
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Old 2019-03-22, 05:09 AM   #11
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Thanks. I ordered 10 from China for $35.00.
Thanks, good to hear! That suggests, not confirms but suggests, that China has some need or use for these bearings and so at least for now it seems safe to assume these bearing are standard bearings. But I would also do just as you have done for that kind of money, that if I needed one set of bearings then I would order five sets, to then have four spare sets, just in case. At UDC the lower grade unis use 40mm OD bearings but the more expensive higher grade unis with ISIS use the 42mm OD bearings such as these, and so for the small money cost of these bearings it seems worthwhile to have a few extra, spare bearing sets at hand.
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Old 2019-03-22, 06:15 AM   #12
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Thanks. I ordered 10 from China for $35.00.
Can you share exactly where you found this deal?
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Old 2019-03-22, 11:25 AM   #13
mowcius
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Can you share exactly where you found this deal?
There is this?
They appear to be designed for RC cars.

Bear in mind that not all ball bearings are created equally though. I've bought some 17x42x12 (for my square taper freewheels) and although they work, they're definitely not made to the same quality as the bearings you can buy from UDC.
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Old 2019-03-22, 01:23 PM   #14
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Definitely a non standard bearing. Here's some choices I found, besides UNIcycle.com ones.

https://www.ebay.com/itm/2pcs-6004-2...kAAOSwH4NZgITb

https://www.ebay.com/itm/10-6004-22-...2/153113291214


https://www.ebay.com/itm/224212-Non-...m/263855489942

https://www.ebay.com/itm/2-6004-RS-2...m/153094927475.

Here's one I found on Amazon; https://www.amazon.com/gp/product/B0...LB7Y72U0&psc=1

Maybe someone who has some 42 22 12 unicycle.com bearings can post a pic here of the bearings, with the part numbers shown. That might be useful to find more sources, too.

I also found something called KRIS HOLM KH ISIS MOMENT HUB Bearing Set from RCbearings , available at RCbearings or Amazon that's NOT the correct 42 x22x12 MM bearing size, so stay away from this. I think he said they were 20mm ones.

And I'm sure the pictures aren't the actual bearing in most listings.
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Old 2019-03-22, 01:25 PM   #15
mrfixit
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Originally Posted by mowcius View Post
There is this?
They appear to be designed for RC cars.

Bear in mind that not all ball bearings are created equally though. I've bought some 17x42x12 (for my square taper freewheels) and although they work, they're definitely not made to the same quality as the bearings you can buy from UDC.
I missed that one, pretty cheap price...
I did learn a whole bunch of stuff on bearings, including the bearing tolerance ratings, ABEC-1, ABEC-3 and ABEC-5 tolerance ratings. So I don't have a lot of hope that I'm getting anything but the lowest quality.

Last edited by mrfixit; 2019-03-22 at 01:33 PM.
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