UBB4630 386 Steel
Rotor UBB4630 386 BB Steel. You, or more specifically, your choice of frame, motivated us to address challenges related to bottom bracket installation and durability – thank you. We embraced the task to improve upon so-called bottom bracket standards to give you the UBB4630. Crafted from 7000 series aluminum alloy, the UBB4630 uses a threaded sleeve to lock both cups in place – without having all the locking effort rely on the press fit shell, thus providing a uniform spin and avoiding undesired noises. The flush fitting in the press fit region prevents bearing overload and also improves bearing alignment for a longer bearing life. The external bearing location affords a smoother spin and increased BB shell stiffness for PF30 and BBright standards. The internal sleeve also prevents cable guides from rubbing against rotating parts.
Rotor UBB4630 386 BB Steel features:
|Material||100% CNC-machined, 7075 aluminum. Labyrinth seals prevent bearing contamination|
|Compatible Crankset Brand||ROTOR|
|Axle diameter compatible||30mm|
|Frame Type||BB386EVO | BB392EVO|
|Discipline||Road | Triathlon | Gravel | Cyclocross | MTB|