回轉支承，是一種能夠承受綜合載荷的大型軸承，可以同時承受較大的軸向、徑向負荷和傾覆力矩。回轉支承軸承一般帶有安裝孔、內齒輪或外齒輪、潤滑油孔和密封裝置，因而能使主機設計結構緊湊，引導簡便，維護容易。
回轉支承應用廣泛，工程機械是回轉支承**初應用也是應用**廣泛的地方，如土方機械、挖掘機、解體機、堆取料機、平地機、壓路機、強夯機、鑿巖機械、掘進機等

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230.20.0400.013Typ           21/520.0230.20.0500.013Typ  21/650.0230.20.0600.013Typ   21/750.0230.20.0700.013Typ 21/850.0230.20.0800.013Typ   21/950.0230.20.0900.013Typ  21/1050.0230.20.1000.013Typ  21/1200.0250.14.0300.013Typ 13/400250.14.0400.013Typ     13/500250.15.0300.013Typ    13/400250.15.0400.013Typ     13/500250.15.0375.013Typ 13/400250.15.0475.013Typ     13/500230.20.0400.503Typ    21/520.0230.20.0500.503Typ 21/650.0230.20.0600.503Typ 21/750.0230.20.0700.503Typ   21/850.0230.20.0800.503Typ  21/950.0230.20.0900.503Typ 21/1050.0230.20.1000.503Typ 21/1200.0
231.20.0400.503Typ           21/520.1231.20.0500.503Typ  21/650.1231.20.0600.503Typ   21/750.1231.20.0700.503Typ 21/850.1231.20.0800.503Typ   21/950.1231.20.0900.503Typ  21/1050.1231.20.1000.503Typ  21/1200.1232.20.0400.503Typ 21/520.2232.20.0500.503Typ   21/650.2232.20.0600.503Typ  21/750.2232.20.0700.503Typ 21/850.2232.20.0800.503Typ   21/950.2232.20.0900.503Typ   21/1050.2232.20.1000.503Typ  21/1200.2230.21.0475.013Typ 21/520.0230.21.0575.013Typ   21/650.0230.21.0675.013Typ   21/750.0230.21.0775.013Typ  21/850.0230.21.0875.013Typ   21/950.0230.21.0975.013Typ  21/1050.0230.21.1075.013Typ  21/1200.0231.21.0475.013Typ           21/520.1231.21.0575.013Typ   21/650.1231.21.0675.013Typ  21/750.1231.21.0775.013Typ   21/850.1231.21.0875.013Typ   21/950.1231.21.0975.013Typ