A2047/A2120D轴承 NK14/20R+IR10×14×20轴承 A4059/A4138D轴承 NK10/16轴承 5066/05185D轴承 05075/05185D轴承 NK9/12轴承 NK10/12轴承 21075/21226D轴承 NK9/16轴承 5079/05180D轴承 NK7/12TN轴承 5079/05185D轴承 7079/07196D轴承 NK8/16轴承 NK8/12轴承