Luoyang SBI Special Bearing Co, .Ltd. located in luoyang, China .More than 20 years of manufacturing and exporting experience in bearing field. SBI currently holds ISO9001:2008 Approval and has been certified since 2001. SBI Slewing Ring Bearing Specification: 1.Bearing Dimensions rang from OD300 mm to OD 5000 mm 2.Can be provided with gearless, internal gear or external gear 3.Can be proveded with internal /external flange. 4.Ball or crossed roller slewing ring bearing design. 5.Single row, double-row, trip-row slewing ring bearing design 6.Lubrication holes 7.Preload options are available as well as variations in clearance