聽起來象是軸承的問題。

來源: 吃與活於 2015-01-30 08:37:55 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

要換需要知道型號。我從下麵的網站買的軸承，還不錯。

http://www.vxb.com/ballbearings.html?gclid=CLneha2SvMMCFaHm7AodJmMAkA

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