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Modern Cyclo-cross bikes typically used bottom brackets with sealed cartridge bearings. No real maintenance required, except to replace when worn out. When cleaning your bike, be careful as high water pressure can force debris past the seals and into cartridge bearings. Once a year replacement is pretty typical for bottom brackets with outboard bearings. ...


To prevent galvanic corrosion. When grease is appied, there is a thin film of grease that prevent direct contact between two different metal. To prevent water and contaminants, especially salt in the winter season, that would otherwise accelerates corrosion as discussed in (1) This will not work with plastic or carbon fiber (+epoxy as matrix) materials as ...

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