HIGH-PRESSURE PUMP

摘要

A high-pressure pump has a pump body (1) provided with a compartment (2) able to house a mechanism for actuating at least one pumping member; a shaft (3) rotatable about an axis (A); a bush (12) which is force-fitted with interference inside a cylindrical seat (10) of the pump body (1), has the function of supporting the shaft (3) and forms a passage (21) between an inner surface (16) of the bush (12) and an outer surface (14) of the shaft (3); and a duct (22) which connects the compartment (2) to the passage (21) in order to supply lubricating liquid to the passage (21) and is substantially defined by a groove (23) arranged between the pump body (1) and the bush (12) and by a hole (24) formed in the bush (12) and arranged opposite the groove (23).