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Headset Help

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  • 12-03-2017 1:36am
    #1
    crosstownk
    Registered Users Posts: 12,863 ✭✭✭✭


    I removed my forks today as my headset has been feeling a bit rough and noisy lately so an overhaul was planned.

    However, when I removed the bottom bearing it disintegrated so now I need a new lower headset bearing. The upper bearing is fine. It's a Giant Defy 4 (2014).

    I cleaned the bearing shell and the dimensions ∅46.9x7x45 are inscribed.

    I've checked out CRC and a few others but I can't find anyone that has this size in stock.

    Any ideas?
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    #2
    RobertFoster
    Registered Users Posts: 9,192 ✭✭✭RobertFoster


    Could be either MR-137 or MH-P22 depending on the inner diameter (37mm vs 34.1mm)

    Variation-of-Headset-Bearings-ACB-Integrated-amp-Integral-RoadMTB-Sold-individuallyABEC-1-291731697128-003f-800x399.jpg

    Variation-of-Headset-Bearings-ACB-Integrated-amp-Integral-RoadMTB-Sold-individuallyABEC-1-291731697128-e66e-800x399.jpg

    I bought a replacement headset bearing from Rulla Bearings a couple of years ago. They're out of stock of the MR137, but you should be able to find something on eBay if that's the one you need.


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    #3
    at1withmyself
    Registered Users Posts: 2,535 ✭✭✭at1withmyself


    Also try these, good quality and cheap. Worth getting a spare to save on future postage rates....

    http://www.edgesportsuk.com/store/components/headset-bearings.html?___SID=U


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    #4
    arybvtcw0eolkf
    Closed Accounts Posts: 24,878 ✭✭✭✭arybvtcw0eolkf


    Well since its Sunday and most places will be closed, and you have time on your hands.. Have you tried Halfords (seriously)?.

    Some stores (like Coolock) have a decent range of serviceable parts. The young lads might look at you a bit thick if you ask them too many technical questions but if you know what you're looking for & have time to kill today then Halfords isn't a bad place to start.


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    #5
    crosstownk
    Registered Users Posts: 12,863 ✭✭✭✭crosstownk


    Thanks for the links. The internal diameter is 34mm so I'll order one from rulla.

    I'd plenty of time to spare today so I cleaned and reassembled the disintegrated bearing. I packed it full with grease and put it back in to the frame. It's not exactly buttery smooth but it will do the job until the new one arrives.
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