Harvest - Rotary Concaves
Wide Wire, Narrow Wire, and Round Bar Harvest Services Rotary Concaves provide the ultimate combine configurations for optimal threshing and grain separation. To tackle high capacity and high wear factors in rotary combines, Harvest wire concaves are manufactured using 1045 steel with more steel bar over the wire. They are more aggressive and last longer. Side frames, hooks and wire diameters are also heavier, so they last longer and keep their shape. Cover plates for various crops and crop conditions are optional.
Harvest Concaves are precision bored so they fit better and are easier to properly adjust.
The wire holes are drilled with state of the art, computer controlled, multiple head drills. This ensures the precision alignment of holes, and a snug wire fit. With a Harvest precision-built Concave there’s no wire-to-hole gap to trap straw.
Rotary combines are achieving very high capacities. Along with higher capacities, rotary combines tend to have higher wear factors. To help control maintenance costs Harvest wire concaves are manufactured using 1045 steel and have more steel bar over the wire. They are more aggressive and last longer. Side frames, hooks and wire diameters are also heavier, so they last longer and keep their shape.
To allow for threshing and separation in a variety of crops Harvest manufactures wide wire concaves, narrow wire concaves or any combination.
In addition, Harvest manufactures round bar concaves for popcorn, high moisture corn and specialty crops. Rather than wires the concave has 1018 ¾” steel bars. Since the round bar is less aggressive than the square bar of the wire concave, the kernel is treated gentler.
At times with insufficient material, the rotor typically drives heads through the concave before they are threshed. This leads to unthreshed heads that overload the return, end up in the tank as dirty sample or become loss out the back of the combine. Material must be retained at the front of the concave to hold the heads in place long enough to thresh the seeds out of the head. With Harvest concaves you can increase your threshing capacity, hold those heads in for proper material on material thresh and eliminate white caps and cracking.