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  • Headset bearings - i'm buying new sealed cartridge bearings. One that i need is an MR127, picture of the one i've taken out i can just make out an 'H6' at the end, if I buy one with a G8 at the end, will it fit differently? I know it's something to do with tolerances, but not much more than that.

  • I know it's something to do with tolerances

    I doubt it, I expect it's just coincidence that the manufacturer codes for materials look like hole tolerance grades.

  • ok, thanks. also i've realised that some that state H8 are also referring to the height of the bearing, which confuses things even further

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