0397802 bearings are used in the Excavator Final drive system of Hitachi :
0397802 Double row angular contact ball bearings
0397802 BRG. Hitachi parts CG15D, EG30, EX50UR, EX55UR, EX55UR-3, EX58MU, HR750SM, HX120B, HX120B-2, HX140B, HX140B-2, VR308, VR308-2, VR408, VR408-2, ZR600TS, ZR800TS, ZX40U, ZX40U-2, ZX40U-3, ZX40U-3U, ZX40U-5A, ZX48U-3