Berges® Spring tension Pulley type F190b for use with wide belts type CW-b 28 and adjusting pulley R190b. Diameter of 190mm with length through bore 90mm, die cast aluminum sheave faces with steel slide hub. Identified by casting numbers 11000326 and 11000586, one spring; castings used on other series of pulleys.. Maximum shaft diameter 28mm with standard bores listed for sale, alternative bores are available contact TVT for non-standard bore quotation.