Total 6 times Heat treatment from the materials to the finished products. Single-row Four Point Contact Slewing Bearing - External Gear Main Technical specifications: Model No.: 011.40.900 Brand: Fenghe No. of rows: Single row Inner structure: ball Gear option: External Gear No. of mounting holes: 30 Internal diameter: 778mm Outside diameter: 1022mm No. of gear: 130 Thickness: 100 Weight: 240kg Other details: Dimeter range: 200mm-7000mm Material: 50Mn, 42CrMo Seals type: rubber gasket, iron or high temperature seal Loading capacity: heavy-duty Size: large diameter OEM: available Certification: ISO9001:2008/ISO14001:2004/OHSAS 18001:2007 Packing details: sea worthy packing in wooden case loaded in container