Bearing cups are available by choice with BSA or Italian thread version. They are fitted with industrial bearings sealed at either side (dimension: Ø 42 / Ø 30 / width 7 mm).
BB30: These bearing cups are suited for installation of the THM Clavicula on frames with bottom bracket housings to BB30 standard applicable to axles with 30 mm diameter. The bottom bracket housing is 68 mm wide and its inner diameter is 42 mm. The snap rings wich for the BB30 standard are used as limit stop when pressing in the bearings, must not be installed. The relatively small bearing clearance of 68 mm could lead to considerable axle deformations. Our solution with bearings at the outside involves a reduced load on the axle which can be seen from the higher rigidity. Another advantage is the facility of using the same crank for frames to BB30 standard and those with BSA or Italian thread. The increase in weight of the complete system is neglegible.
Pressfit 30: : In the meantime SRAM has its own specification for crank installation. Frame width is either 68 mm or 73 mm and the inner diameter 46 mm. We supply a system adaption with cups installed from outside, offering the bearings a contact width of 85.5 mm (Road) or 93 mm (MTB).
PressFit 86: This is a meantime frequently used bottom bracket mounting facility composed of Ø 41 mm cups to be pressed in. Available are a “Road” variant for 86.5 mm frame width and 2 MTB versions, one for 92 mm frame width (symmetrical to the center line) and another for 89.5 mm frame width (unsymmetrical). When ordering please specify “Shimano Pressfit” version, we then will supply you the cups fitting the Clavicula system.