DF - IR inner ring (the ring) after heat treatment and precision machining, dimensional tolerances and geometrical precision in line with national standards, needle roller bearings NA6913, both ends of the inner ring raceway surface is generally a guide chamfers, needle roller bearings, in order to installation. It applies to the shaft can not be heat treated, not directly as a raceway occasions. The inner ring and without inner ring needle roller bearings with reach normal operating clearance when in use. Needle roller bearings and thrust ball bearings Dimensions Rolling needle roller bearings and angular contact ball bearings Dimensions Rolling needle and thrust cylindrical roller bearing dimensions and tolerances Rolling needle roller bearings technical condition with the constant process of industrialization Promoting and increasing China's machinery products in the international market competitiveness, the domestic automobile, motorcycle, power tools and other industry, there has been rapid growth. Needle roller bearings NA6913, governance and needle (online consultation), 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.