Patent ID: 11885410
Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 17:
18. A method for providing a bearing pin assembly for a planetary gear box, comprising:
providing a plurality of plain bearing pins with each having a longitudinal axis and an external contact face having two axial ends,
each of the plain bearing pins including a crowning at the contact face, wherein an outer diameter of the contact face decreases from a maximum outer diameter towards at least one of the axial ends,
wherein the crowning of the contact face is configured such that the contact face is concavely shaped adjacent to the at least one of the axial ends or to a cylindrical region adjoining the at least one of the axial ends,
wherein the contact face of each of the plain bearing pins, in longitudinal section, forms a first concave curve adjacent to the at least one of the axial ends or to a cylindrical region adjoining the at least one of the axial ends, the first concave curve transitioning into a convex curve, in a region of the maximum outer diameter, and the convex curve transitions into a second concave curve, which extends as far as the other of the axial ends; and

mounting a planet gear on each of the plain bearing pins.