Slewing bearing , slewing ring 1. Design and manufacturing are mainly according to : Mechanical standard JB/T2300-1999; Marine standard CB/T3669-1995; Construction industrial standard JG/T66-1999. Our slewing ring includes: Rolling slewing bearing; Single row slewing bearing; Double raw slewing bearing; Multi-raw slewing bearing; Angular contact slewing bearing; Ball slewing bearing; Three point contact ball slewing bearing; Four point contact ball slewing bearing; Spherical roller slewing bearing,etc. For gears, 2.Our precision grade can be AGMA12 grade, MOD can be up to 0.4-30M.Max OD can be up to 2m. 3.Quality:finest material and process.Hardened and durable,good connection 4.Package:inner package,foam; outer package,wooden case or as per customer's requirement. 5.Holfer 700 gear grinding machine imported from Germany,and also have many other imported production equipment. 6.Test and detection equipment includes: Gear measurment machines(MM) magnetic particle flaw detector, common normal micrometer micrometer inside caliper outside diameter micrometer,etc. We had made the deals successfully with India, Iran,Germany,Japan and many other countries. Wormly welcome to visit our factory.