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The TriStream rotor is unique to John Deere because it features a slightly tapered design in the threshing area for best in class grain quality while dramatically reducing the growling that often comes with heavy rotor loads. The TriStream rotor is recommended for producers who harvest mainly coarse grains along with easy threshing small grains.
The spiral vanes surrounding the rotor, guide the crop material through the threshing and separating area in a pull and release affect to improve performance. This John Deere S-Series Combine feature is going to generate less power consumption.
Theory of Operation:
Fifteen cast-constructed threshing elements provide superior material handling with excellent grain quality. The elements spiral around the rotor to control material flow. In some harvesting environments, the dense-pack configuration (nine additional threshing elements) may be necessary.
Conical top covers allow for smooth material movement within the threshing and separating area. The top covers have a radius larger than the rotor, allowing the material to expand as it travels along the top of the rotor. This design uses the pull and release action of crop material, aiding in the threshing and separating to reduce power consumption.
Specs & Compare
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|Engine type||9.0 L
548 cu in.
|Emission level||Final Tier 4 / Tier 2 (Australia/New Zealand)|
|Rated speed||2,200 rpm|
|Rated power||225 kW
|Power boost @ rated speed||25 kW
|Fuel capacity||950 L
|Conveyor chain slat type||Cast iron|
|Feed Accelerator, Stone Trap (FAST)||Reverser
|Rotor length||3,124 mm
|Rotor diameter||762 mm
|Rotor speed range||210-1,000 rpm|
|Concave area||1.1 m2
1,705 sq in.
|Separating area||1.54 m2
2,390 sq in.
|Discharge grate area||0.36 m2
555 sq in.
|Front chaffer||0.5 m2
801 sq in.
|Front chaffer extension|
3,824 sq in.
|Sieve area||2.1 m2
3,255 sq in.
|Total cleaning area (louvered)||5.1 m2
7,905 sq in.
|Cleaning fan speed||620-1,200 rpm|
|Grain tank size||8,900 L
|Unloading auger length||6.5 m
|Unloading rate||77 L/s
|Total machine||17,250 kg