An access door for a combine harvester includes a body having a top, a bottom, a first side, and a second side. The body includes a height defined between the top and the bottom and a width defined between the first side and the second side. A plurality of ribs is integrally formed in the body for adding rigidity thereto, and a deflector is integrally formed with the body and protrudes therefrom. The deflector has a top surface and a width that is substantially the same as the width of the body. The body is defined within a first plane and the top surface is defined within a second plane such that the second plane is disposed at an angle less than 90? from the first plane.

An embodiment includes a threshing system of an agricultural harvester. The threshing system including a rotor cage surrounding a rotor defining a threshing space there between, where the rotor cage has a cut crop entrance, a transition cone defining an infeed to said rotor cage, where the transition cone is positioned to direct crop flow toward the cut crop entrance of the rotor cage, and an infeed ramp positioned between the rotor cage and the transition cone, where the infeed ramp includes guide vanes for guiding the crop flow from the transition cone into the cut crop entrance of the rotor cage.

A threshing and separating system for an agricultural harvester includes: a rotor; a rotor cage at least partially enclosing the rotor, the rotor cage including a first flat wall, a second flat wall connected to and angled with respect to the first flat wall, and a curved wall connected to the second flat wall; and at least one vane connected to the first flat wall or the second flat wall.

An access door for a combine harvester includes a body having a top, a bottom, a first side, and a second side. The body includes a height defined between the top and the bottom and a width defined between the first side and the second side. A plurality of ribs is integrally formed in the body for adding rigidity thereto, and a deflector is integrally formed with the body and protrudes therefrom. The deflector has a top surface and a width that is substantially the same as the width of the body. The body is defined within a first plane and the top surface is defined within a second plane such that the second plane is disposed at an angle less than 90? from the first plane.

An access door for a combine harvester includes a body having a top, a bottom, a first side, and a second side. The body includes a height defined between the top and the bottom and a width defined between the first side and the second side. A plurality of ribs is integrally formed in the body for adding rigidity thereto, and a deflector is integrally formed with the body and protrudes therefrom. The deflector has a top surface and a width that is substantially the same as the width of the body. The body is defined within a first plane and the top surface is defined within a second plane such that the second plane is disposed at an angle less than 90? from the first plane.

A concave section for a harvester is provided. The concave section includes a first concave body. The first concave body includes a first leading end, a first trailing end, a first upstream side and a first downstream side. A width between the first upstream side and the second downstream side is no greater than 10 inches. The first concave body includes a first crop engagement face that extends between the first ends and the first sides. The first crop engagement face includes at least one of a first thresher profile portion and a first separator profile portion.

A concave section for a harvester is provided. The concave section includes a first concave body. The first concave body includes a first leading end, a first trailing end, a first upstream side and a first downstream side. A width between the first upstream side and the second downstream side is no greater than 10 inches. The first concave body includes a first crop engagement face that extends between the first ends and the first sides. The first crop engagement face includes at least one of a first thresher profile portion and a first separator profile portion.

A threshing or separating concave for grain harvesting is equipped with curved cheeks, between which concave bars having an elongated cross-sectional profile extend, the curved inside edges of which are provided with a rounded inside edge, and having concave rods extending in the direction of the curve, which pass through holes in the concave bars that are immediately adjacent to the rounded inside edge.

A universal threshing concave for an agricultural combine for harvesting different types of crops is disclosed. The threshing concave comprises a frame with a pair of opposite side members and opposite end members. The invention further comprises an array of threshing bars angled and notched along their longitudinal extent, and hexagonal in cross-section. Each bar is seated in openings in the end members of said frame.

A universal threshing concave for an agricultural combine for harvesting different types of crops is disclosed. The threshing concave comprises a frame with a pair of opposite side members and opposite end members. The invention further comprises an array of threshing bars angled and notched along their longitudinal extent, and hexagonal in cross-section. Each bar is seated in openings in the end members of said frame.