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The ISIS system got a bad rap because the axle size -when crammed inside a BB shell-allowed for little room for the bearings and they were often not up to the task and wore quickly. Of course the other half of the equation was that most of the bearings were poor quality Chinese examples. It's pretty amazing how durable an ISIS BB can be when some additional design effort is made and quality materials are used. Two examples come to mind...There is an SKF made unit that uses roller bearings...They are pretty tough to kill.....the other example is made by Stronglight...It uses double row bearings and is available with either titanium or steel axles. I have one of these on my Time that I have had since 2004. By this time I have no clue as to how many thousands of completely trouble free miles the BB has on it. Pretty good for a system with a reputation for a short life. I have never been able to get anywhere near that kind of mileage out of a CAMPY UT set of bearings...
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