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In some cases, yes, but not with a true BB30 axle. Many "BB30" crank sets (notably Rotor and some, but not all, SRAM) actually have long axles so that they will fit BB30, BBRight or BB386Evo with the right spacers. For this to work, the distance between the faces of the two crank bosses needs to be 86mm+, whereas a true BB30 axle puts the crank boss faces 68mm apart.
gbj_tester
Can I use a crank marked bb30 with a BSA threaded BB frame with some adaptor?