Radial piston pump
AssigneeIna Walzlager Schaeffler oHG
InventorJohannes Lang
Life of this patent
Estimating the term…
Abstract
The eccentric end portion (5) of a pump shaft (3) is mounted in a needle roller bearing (6) which comprises a sheet metal bushing (9) and needle rollers (7) guided in a cage (8), wherein the end of the sheet metal bushing (9) remote from the pump shaft (3) is provided with a closed bottom (18) to prevent a displacement of the sheet metal bushing (9) in axial direction.
Claims14
A radial piston pump (1) having a rotating pump shaft (3) on whose end portion is arranged a shaft journal (5) extending eccentric to a central longitudinal axis of the pump shaft (3), a needle roller bearing (6) comprising an outer ring made as a sheet metal bushing (9) being arranged on the shaft journal (5), and pump plungers (12) extending radially to the pump shaft (3) in a star pattern within a pump housing (2) being supported with end faces on said outer ring, characterized in that, at an end remote from the pump shaft (3), the sheet metal bushing (9) comprises a closed bottom (18) adapted to abut against an end face of the shaft journal (5).
A radial piston pump (1) having a rotating pump shaft (3) on whose end portion is arranged a shaft journal (5) extending eccentric to a central longitudinal axis of the pump shaft (3), a needle roller bearing (6) comprising an outer ring made as a sheet metal bushing (9) being arranged on the shaft journal (5), and pump plungers (12) extending radially to the pump shaft (3) in a star pattern within a pump housing (2) being supported with end faces on said outer ring, characterized in that, a stop disc (20) is arranged in the sheet metal bushing (9) at a shaft-remote end thereof, which stop disc (20) is adapted to abut against an end face of the shaft journal (5).
Dependencies are inferred from the claim text.