Adjustable Joint for Example for a Grain Unloading System of a Combine Harvester

An adjustable joint is to be provided along a tube, such as a grain unloading tube of a combine harvester. A bearing system is provided between the facing end of first and second tubes. allowing a controllable bend to be provided between the first tube and the second tube. The bearing system is actuated to control the bend. The bearing system has first and second first tubular wedges which face each other at the sloped ends, and bearings around the outside ends and the facing ends. A relative rotation angle is set between the first and second tubular wedges to set the degree of bend.