Device for driving piston pump piston element(s), e.g. for braking system, has bearing, outer ring external diameters, roller bearing elasticity matched so outer ring external diameter corresponds to contact area piston element end radius

摘要

The device has an approximately spherical piston element (3A,3B) end face facing an eccentric device (2) and a roller bearing between the control curve of the eccentric device and the piston element with an outer bearing ring (11), an inner bearing ring (12) and several bearing rollers (9) between them. The bearing roller and outer ring external diameters and the elastic city of the roller bearing are matched so the external diameter of the outer ring at least approximately corresponds to the radius of the end face of the piston element in a contact area.