Needles bearing 1)high precision and long life 2)low noise and ... (including small size, middle size, bigsize huge size).Needle roller bearing HK, BK series HK, RS HK, 2RS series BK, RS ... NA, RNA, NK series HF, FC Series HFL, FCB series K series, KZK, KBK series AXK series, AS, GS 811, WS811 ... , X series IR, IR series NKIA, NKIB series. Needle Roller Bearing