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ROTOR UBB4630 386 BB Steel
You, or more specifically, your choice of frame, motivated Rotor to address challenges related to bottom bracket installation and durability – thank you. Rotor 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.
Specifications
- Weight: 109g
- Material: 100% CNC-machined, 7075 aluminum. Labyrinth seals prevent bearing contamination
- Compatible Crankset Brand: ROTOR
- Material Bearing: Steel
- Axle diameter compatible: 30mm
- Frame Type: BB386EVO | BB392EVO
- Discipline: Road | Triathlon | Gravel | Cyclocross | MTB