Roller with raised elements clad on the surface for driving a crop conveying belt

A conveyer for harvested crop material comprising:

• a belt for transportation of the harvested crop material;
• and a guide roller comprising:
• a cylindrical metal roller body having an outer metal cylindrical surface surrounding an axis of rotation of the roller for engaging a surface of the belt;
• and a plurality of raised elements on the outer metal surface of the roller body so as to be raised to a height from the metal surface;
• wherein the height of the raised elements from the metal surface is less than 6 mm;
• the raised elements and the belt being arranged such that the raised elements do not engage into any recesses in the surface of the belt;
• wherein the raised elements comprise a material which is, relative to the outer metal cylindrical surface, a hard wear resistant material;
• and wherein the material comprising the raised elements is clad as an additional material onto the outer metal cylindrical surface of the roller;
• the raised elements being arranged in a pattern on the metal surface so as to leave areas of the metal surface between the raised elements which are free from the raised elements so that the metal surface is bare of the hard wear resistant material.