Xuzhou xinda slewing bearing co. ,ltd is a leading manufacturer and exporter of all kinds of slewing bearing (diameter rang:200mm-4000mm), certified by iso9001:2000. specializing in the design and produce standard or non-standard slewing bearing. the following are our products: 1. Single-row four-point contact ball slewing bearing 2. Single-row crossed rollers slewing bearing 3. Double-row ball slewing bearing 4. Three-row roller slewing bearing 5. Light type profile slewing bearing Slewing bearing are extensively applied in vessel, construction machinery ,mine machinery, excavator, concrete machinery, paper machinery ,plastic and rubber machinery, wind power generator, metallurgy machinery ,packing machinery ,piling machinery ,all kinds of cranes and so on.