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• Bearing Bicycle Bottom Bracket PF30/BB30 Bicycle Accessories Bicycle Accessories Description: NAME:PF30R SIZE: 46*68MM FOR CRANKSET:SHIMANO CRANKSET 24MM*24MM BEARING: CERAMIC BEARING BB WIDTH:68/73MM WEIGHT:112 METERAL:CNC 7075AL COLOUR:BLACK / RED NAME: BB30AR SIZE:42*68MM FOR CRANKSET:SHIMANO CRANKSET 24MM*24MM BEARING: CERAMIC BEARING BB WIDTH:68/73MM WEIGHT:103 METERAL:CNC 7075AL COLOUR:BLACK / RED BB30AR five-spindle, suitable for BB30AR Five Through frame conversion into traditional SHIMAN O Integrated crankset This Type BB is the bottom bracket , would be installed directly Press Frame (PF30R 46mm*68mm) PF30 bearing gap tolerance requirement is forty six +0/-0, and the accuracy requirement is precisely diminished through half of Press Frame(BB30AR 42mm*68mm) BB30 bearing hole tolerance requirement is forty one +0/-0mm (that is to say, the bearing gap would be barely larger, yet now not smaller) Aluminum Alloy Material + PA Ball Bearing with 2mm Alloy Spacer 7075 aluminum alloy CNC precision machining Some people may worry about Bearing drop No! we're using the cone bearing, collocation 7075ALBB shell, when the crankset is installed will squeeze Bearing, achieve the shut fitting impact Characteristic: PF30 is acceptable for the conversion of PF30 frame into ordinary Shimano Crankset, and BB30 is a similar Package Included: 1 piece *Bottom Bracket (with logo)

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