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Jiangsu Shuangzheng Machinery Co.,Ltd. is specializing in standard and non-standard slewing bearing. Over the years, we supplied high quality product & good service to every end user and valued distributors all over the world. We’ve enjoyed a very good reputation up to now.We have strict quality control system in our own factory, meanwhile, we have passed ISO9001-2008 Quality System Certification and JG/T67-1991,JB/T2300-1999 with our country’s engineering & machinery standards.Our products are ranging from 200mm to 5000mm, which mainly apply for tunneling equipment, harbor and shipyard cranes, construction equipment, mobile cranes, offshore technology, tower cranes, turning machines, solar energy plants, ship deck cranes, railway crane, man lifts, wind turbines, and more. And we are proud of our designing team and our past achievements and continuous development, we are strongly motivated for the challenges to come. Adaptation to changes in the environment,  we do have our own ability to customize varieties specific needs, we will do our best to provide you the most and unparalleled slewing bearing with competitive price, high quality and on-time delivery !For slewing drive, there are nine (9) different sizes available from 3" to 25" with more than 60 models to meet both regular and precise tracking requirements in PV, CPV and solar thermal power tracking fields. Shuangzheng team is committed to keep the spirit of continuous improvement and focus our strategy of strict quality control standards, quick response, prompt delivery and low price. We look forward to working on all of our customers' growing demands. Our ability to optimize the bearing design for your specific needs is unparalleled and we will assist you throughout the design, manufacturing and implementation process.Shuangzheng delivers custom-engineered solutions to customers in 34 countries.In Shuangzheng, we promote education and the transfer of knowledge to our employees. The later have a high level of expertise, a responsible attitude towards suppliers and clients, are able to adapt to the development of products and production technology as well.Bearing connect many different rotating structures. We are very pleased to offer everything from small single row ball slewing bearing for light duty applications to large triple roller slewing ring bearings for demanding heavy applications.