Rotor UBB4630 386 Steel Bottom Bracket

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