Radial piston pump for high pressure fuel supply has at least one lubricant pocket in plates

摘要

The radial piston pump (1) has the slip bearing between a plate (17) connected to the piston foot (15) of a piston (13), and a facet (21) of a polygonal ring (19) to provide lubricant pockets (29). There is at least one lubricant pocket in the plates. The pockets should have a depth from 0.001 to 0.1 mm and a diameter between one and two thirds of the diameter of the plates.