系列

     无内圈滚针轴承

HK.NK NKS RNA49 RNA48

     无内圈双列滚针轴承

             RNA69

     有内圈滚针轴承

NKI NKIS NA49 NA48

     有内圈双列滚针轴承

              NA69

     无内圈滚针轴承 带密封圈

RNA49-RS RNA49…2RS

     有内圈滚针轴承 带密封圈

NA49-RS NA49…2RS

     无挡边有内圈滚针轴承

               NAO

     无挡边无内圈滚针轴承

              RNAO

     无内圈满装滚针轴承

               RNAV

     有内圈满装滚针轴承

                NAV

     无轴向引导支承滚轮

           RSTO STO

     有轴向引导支承滚轮

     NUTR NATR NATV