Slewing bearing is an important transmission component in construction machinery, which bears the comprehensive load, it is also called as the “joint of the machine”. With the rapid development of the machinery industry, slewing bearings have been widely used in the engineering machinery, wind power generation, shipbuilding equipment, metallurgical machinery and other industries. To meet the needs in various industries, UHD has launched specific cubic boron nitride tools,which has been successfully applied to several well-known companies in domestic and abroad.