A threshing concave frame assembly for crop separating operations in a combine harvester is disclosed. In one exemplary embodiment, the concave frame includes a first side member and a second side member opposing each other, wherein the first and second side members each have an interior surface and exterior surface. In addition, an elongated threshing bar member is disposed between the interior surface of the first side and second side members of the concave frame. In particular, the elongated threshing bar member includes a first end and a second end, wherein the first and second ends are secured to the interior surface of the first and second side members of the concave frame.
