|
Advanced Harvesting System®
Measuring 140-inches (3,556 mm) long, the variable-speed Advanced Harvesting System rotor performs four tasks — intake, threshing, separating and residue discharge — with a single component. Powered by its own dedicated hydraulic pump(s) and motor, the AHS threshes the crop during multiple passes, gently allowing the grain to fall through the concaves. Once set, rotor speed remains constant, regardless of changes in engine rpm or field conditions.
|
|
|
|
A multi-speed gearbox — three speeds on the 680B and two speeds on the 660B and 670B — allows the operator to select the ultimate torque and speed range up to 1040 rpm. The longest in the industry, the AHS rotor also increases crop throughput, allowing the combine to maximize productivity and, in many cases, operate at higher ground speeds. While the 660B and 670B rotor measures 27.5 in. (700 mm) across, the 680B rotor spans a full 31.5 in. (800 mm) in diameter.
Equally important to the AHS performance is an 18 in. (457 mm) diameter UniFlow™ feed conveyor drum. Located between the feeder housing and rotor intake, it uses opposing helical vanes to help accelerate and even out the flow of crop material into the rotor, feeding it a full 360 degrees around the inlet auger flighting. This, in turn, minimizes crop damage, as well as intake area wear.
Gentle, yet complete threshing occurs over multiple sections of concaves wrapped around the rotor, providing 2,721 in.2 (1.75 m2) of gentle and complete threshing on the 680B and up to 2,205 in.2 (1.42 m2) on the 660B and 670B. Meanwhile, concave clearance is electrically controlled from the comfort of the cab, for maximum productivity and efficiency. A patented direct discharge rotor ejects residue directly from the rotor, reducing complexity and horsepower consumption, while improving straw quality for windrow applications.
|
