Originally Posted by
noglider
Campy hubs had thick flanges with very snug spoke holes. This led to increased surface area between flange and spoke, and this reduced spoke fatigue. It also slowed down the time to build wheels.
Campy bearings are durable because of two things: precise machining and hard steel.
Back in the early 80s we did some hardness testing on various chainrings. Surprisingly, Stronglight rings were the hardest, followed closely by Campy. Sugino, SR and Shimano were in the middle. TA was the softest.