Bike Forums - View Single Post - External ”Hollowtech” bearings or square tapered cartridges?
Old 12-01-19, 04:32 PM
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Join Date: Apr 2005
Location: Milwaukee, WI
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Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400

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Well, I've replaced a cheap cartridge (Chin Heur) after a few K miles with a UN55 that probably has 5K miles on it and running fine. I probably have 10K on an 105 BB5600 HTII bottom bracket that is running fine.

Either one should give years/miles of trouble free service unless you're riding in very extreme conditions.

I would forget the UN 26 and step up to a UN 55 for a few more $$
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