Bicycle bottom brackets PF30 / 4130 / BSA30 / T47

Bicycle bottom brackets PF30 / 4130 / BSA30 / T47

grabcad

Since I'm developing crankset these days, have to get accurate measurements of variable bottom brackets. So I measured actual products and have these models. accurate threads/heights/diameters. Hope these could help some people doing their job.

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