The bearing arrangement for a common rail fuel injec- tion pump of a piston engine is configured to carry ra- dial forces and comprises a housing (1), a bearing el- ement (2) that is arranged within the housing (1) and provided with a sliding surface (3) for supporting a ro- tating journal (6) or shaft (7), at least one oil feeding port (4) opening onto the sliding surface (3) of the bearing element (2), and an oil supply bore (5) that is arranged in the housing (1). The arrangement further comprises an oil groove (8) that is arranged between the housing (1) and the bearing element (2) for estab- lishing fluid communication between the oil supply bore (5) and the oil feeding port (4).