New machinery component

Slewing ring bearings are new type of mechanical parts for nearly forty years gradually on the rise in the world, which have inner and outer ring, rolling body composition, etc. at present, Chinese shaping slewing bearing production, mainly in the early 80 by the Ministry of machinery industry specified Tianjin Engineering Machinery Research Institute organized to introduce the design and manufacturing technology of the former Federal Republic of Germany Rothe company Erde.

  Released in December 20, 1984, the Ministry of machinery industry standard of the people's Republic of China， JB/2300-84 Rotary Bearing Types, Basic Parameters and Technical Requirements, mainly by the Ministry of machinery and electronics industry of Tianjin Engineering Machinery Research Institute, Xuzhou Hailin slewing ring factory is responsible for drafting, later the country again in 1991 issued a construction machinery standards, JB36.1-36.3-91, in 1999 and 2011 has issued new machinery industry standard JB/2300-1999 and JB/2300-2011 .