American standard one row roller chain, heavy duty version 12A-1H is suplied per meter. Chain pitch - 19,05 mm (3/4"). It is used for transsmision of mechanical power on agricultural machinery, including Claas Lexion series of combines.

The drive chain application: The single-row roller chain  is one of the major elements in the actuating unit. Chain driving are applied in equipment in drives of machines to movement transfer from a master shaft on one or several conducted shaft. Structure...