SD BB386 SPINNING BOTTOM BRAKCET - 24MM This SD Spinning bottom bracket is CNC machined from aluminum. It allows the installation of a crankset with a 24mm spindle on a frame with an external width of 86mm and an internal diameter of 46mm. This bottom bracket features bearings with a conical outer race. Therefore, the bearings can only be mounted in one direction within the cups. The cups are also marked with "OUT" to indicate the external side. This technology enables automatic coaxial alignment for improved power output. Its easy maintenance feature ensures smooth operation over extended periods, while angular contact further enhances its reliability and longevity. For installation, the bottom bracket has a 20-spline internal fitting on each side to accommodate a square-taper bottom bracket tool. This locking mechanism allows for easy installation. Its threaded structure helps prevent the intrusion of foreign objects and increases the rigidity of the bottom bracket. SPECIFICATIONS Bottom Bracket Type : BB386 Material : Aluminum Installation : Threaded Spindle Diameter : 24mm Housing Diameter : 46mm Width : 86mm Bearings : A2436RS / BBA24-S Tightening torque (max) : 40Nm Weight : 139g
