Bike Forums - View Single Post - External ”Hollowtech” bearings or square tapered cartridges?
Old 12-01-19, 06:35 PM
  #8  
DrIsotope
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I have a Shimano SM-BBR60 here with +15k miles on it, installed on it's third frame. Bearings are still smooth.

And even though no one asked, a BB-UN26 square-taper is 355g, while the aforementioned BBR60 is 77 grams. That's over half a pound.
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