Durable and Large Load Duty. Our slewing bearing is especially suitable for long-distance heavy haul trailer. trailer slewing bearing with flange trailer slewing bearing with inner flange and external gear trailer slewing bearing with outer flange and internal gear Material : CK50 QT;42CrMo4V. Quality warranty:2 years. Certificate: TS16949,DNV. Packing:Antirust Oil+rubberized fabric+free of fumigation box(no solid wood). Production Period : 7 days or 30 Days. We produce Slew ring,Slew drive,undercarriage parts for heavy machinery. Mini Combine Harvester,Mini Tiller,Generator,Engine,Water Pump,Fire Pump, Atomizing Pump and Farming Cultivation Accessory for agriculture. Advantages: Meet the complex and harsh environment fully. Durable. All Seasons. Competitive Price.