PF30 OSBB Shimano Road Ceramic Bottom Bracket

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AITA PF30 OSBB Shimano road ceramic bottom bracket converts PF30 OSBB frame (62mm width) to accept Shimano/FSA 24mm spindle cranksets. Different from the other's PF30 OSBB bottom bracket plus adapter option, this ceramic bottom bracket is an integrated unit which requires no adapter.

In addition, both sides ceramic bearings are outside of the PF30 OSBB frame which are as same as the Shimano/FSA external bottom brackets give the crank arms the direct support. Hence this system runs much more stable, reliable and performs better.

With the grade 3 Si3N4 ceramic balls (8 times rounder and 4 times smoother than the steel's), spinning on the hardened ABEC 7 races, AITA's ceramic bearings run much smoother than most of the bearings in the market and only consume 20% of the power compared with the steel bearing, plus the bearings will last 3-5 times longer.

Unique designed dust cover improves the durability of the bottom bracket compared with the traditional Shimano's design.

2 year warranty.

Free shipping worldwide.

CNC aluminium external BB cups;
ABEC7 high chrome vacuum degassed bearing steel races with quenching and tempering hardening;
Grade 3 Si3N4 ceramic bearing balls;
Nylon bearing retainer;
Dual lips light contact rubber bearing seals;

Frame requirements:
PF30 OSBB standard frame 61mm width;
Shell inner diameter 46mm;

Crankset compatibility:
Shimano and FSA 24mm spindle cranksets.


Frame requirement:
PF30 OSBB standard frame 61mm width (additional 2 x 3mm spacers required to extend the width to 68mm) Shell inner diameter 46mm
Crank compatibility:
24mm spindle cranksets