Physical ring needle roller bearing is composed of one or two rings and needle roller set with cage components. The main structural characteristics of the code structure type bearing NK NKS RNA49 RNA48 outer double-wall single row without an inner ring NKI NKIS NA49 NA48 outer double-wall single inner ring RNA69 outer double Edge double row without an inner ring outer double NA69 Edge double row inner ring bearings in the diameter direction when the machine is limited by needle bearings AXW35, the choice of needle roller bearings, special light and ultra-light series of ball or roller bearings; when the bearing in the elastic deformation of a small rolling machine Rolling needle bearing AXW50, in most machines do not have to be considered, but in some machinery needle roller bearings AXW40, such as machine tool spindles, bearing rigidity is an important factor in general should use cylindrical and tapered roller bearings. When the axial position of the limited choice of narrow or special narrow series of ball or roller bearings Needle roller bearings AXW30, governance and needle (certified), needle roller bearings supplied by Linqing municipal and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) (www.zhgzzc.net) Shandong Liaocheng, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. Needle in governance and leadership with the staff warmly welcome all inquiries negotiations to create a better future governance and needle.