Bearing arrangement and method of fabrication thereof

摘要

A contact surface (7) reduces friction between a lifting piston (3) and a piston pin (4). To ensure adequate lubrication on the contact surface, the piston pin has a structure (8) of recesses (9) on the piston pin near the contact surface. This slows down the run-off of a lubricant, so that optimum lubricating film thickness can be guaranteed. An independent claim is also included for a method for a structure on a defined piston pin for linking between a con-rod and a lifting piston to provide a swiveling motion.