Round Bar Concaves
Round bar concaves are combine concaves made of solid round steel bars and are typically used for harvesting high-moisture corn. Round bar concaves have been around for many years now and are available by most rotary combine harvester manufacturers. No matter if you have a John Deere or Case IH combine, the importance of type of concave you have in your combine is always critical to its performance. Round bar concaves in rotor combines have their advantages but they also have noticeable disadvantages, each of which we will discuss.
What Are Round Bar Concaves?
In concaves for combines, friction among the rotating cylinder, the incoming crop, and the concave results in the threshing process. The clearance between the cylinder and the concave is adjustable. Once the crop enters the clearance, it gets squashed by the cylinder against the concave and smaller parts start to sift through the openings. As a result, the grain is separated from the plants.
The clearance distance, the bar and wire patterns of the concave, the speed of the rotor, and the crop types determine how clean the samples turn out in the grain tank. It takes a bit of experience to understand how all these factors influence the process.