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Agricultural Review | July 22, 2017

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DEUTZ-FAHR Combine harvester C9000 Series

DEUTZ-FAHR Combine harvester C9000 Series

Embodying DEUTZ-FAHR’s many years of experience in harvesting and its ongoing commitment to developing new technologies, processes and machinery, the C9000 Series consists of four models: C9205 TS, C9205 TS B, C9206 TS and C9206 TS B. These machines combine outstanding productivity with extraordinary versatility (for large area applications), an elegant design and incredible functionality, for unparalleled harvesting performance with all types of crop. With powerful engines, superlative fuel consumption and unbeatably low running costs and simple maintenance, the C9000 Series is truly remarkable.

The high performance cutter bars (measuring from 4.80 to 9 m in width) have a monolithic structure for superior weight distribution and stability, maximising durability and performance irrespective of cutting width.
The large diameter feeder auger with broad spirals and helically distributed auger fingers ensures continuous feed and product transfer.

The feeder channel has alternating rasp bars fastened to three chains. The carrier shafts are fitted with toothed guides to prevent slippage between chain links, to ensure continuous feed to the machine and prevent overload.
The feeder channel has a large aperture facilitating access to the interior of the channel itself for maintenance.

Maxi Crop
The C9000 Series is equipped with the extraordinary “Maxi crop” system, which significantly increases the versatility of the machine and maximises threshing efficiency even in the most challenging conditions.
The generously sized threshing drum (600 mm in diameter, 1.52 m in width) has eight rasp bars (screw-mounted for easy replacement) for an extremely effective threshing action.
Crop enters the threshing drum horizontally for uniform, blockage-free feed; while the synchronised straw beater situated behind the threshing drum has an additional grille for an even larger separation area and more effective spreading of the crop over the surface of the straw walkers.
The exclusive Maxi Crop system lets the driver select five different positions for the Turbo-separator (with ten toothed rasp bars) electronically from the cab, with a drum excursion from 25 mm (most closed position for maximum separation action) to 65 mm (minimised straw damage).

Multi-segment concave
The concave also has fifteen rasp bars arranged with a pitch of 121 degrees, for superlative threshing and separation efficiency.
The input and output distances between the concave and the threshing drum at the front and rear are independently adjustable by electric actuators controlled by the Commander Control system.
The multi-segment concave (4 mm wire diameter) has been specifically designed to allow immediate reconfiguration of the combine harvester when needed for different crops: the standard segments are simply removed the segments from the stone guard cavity of the concave and replaced with specific segments for the crop.

Thresher drum reduction gear
The threshing drum is equipped with an efficient variable speed transmission making is possible to set the ideal speed for each crop: the speed may be set and electronically maintained within a range from 420 to 1250 rpm, while an automatic variable speed transmission tensioner system protects belts and threshing drum against overloading. For particularly delicate crops, and additional reduction gear unit (easily installable, thanks to the flanged configuration of the threshing drum) is also available to reduce the operating speed range of the threshing drum to a lower 210 – 625 rpm.
Straw walkers
The straw walkers have a very large surface area and are particularly long to ensure perfect separation of the grain from the straw; while the first step of the straw walkers is deeper that the others, to slow the flow of crop exiting the threshing system and further improve the efficiency of the first stage of separation.
The straw walkers are mounted on special, hermetically sealed bearings, which reduce noise and power loss and increase the lifespan of the shaft and of the straw walkers themselves.
And for even greater separation efficiency, the straw walkers may be fitted with specific crests, while the return pan may be specifically configured so that the crop already reaches the grain pan in stratified form.

Sieves and ventilation system
The sieves are mechanically operated and adjusted with levers, and are easily removable and fitted with tall separator blades.
A system for electric sieve adjustment from the Commander Control is available as an option.
Using dual sensors and a control bar extending along the entire length of the threshing tank, the sieve control system monitors the productivity of the combine harvester precisely.
A high performance 400 mm diameter tangential flow turbine with 44 vanes ensures a constant air flow. The air flow volume is controlled by deflectors which advance or retard air delivery to the sieve for uniform delivery over the entire length of the tank.

DGR
The recovery system ideally redistributes material that has already be treated over the grain pan: a solution that prevents threshing system overload and the risk of grain breakage or increased straw walker grain loss.
The DGR uses friction inserts (with interchangeable types for different crops) to exert an additional threshing action on the recovered grain.
The recovery rate is monitored continuously and an alarm signal warns of overload conditions.

Discharge pipe
The discharge pipe has a capacity of the 90 lt/sec, ensuring the tank is emptied extremely quickly. The 4.5 metre high discharge outlet means that the tank may be emptied even when moving, and allows product to be transferred easily even into large trailers.
Measuring 6 metres in length and with a generous 110 degrees of mobility, the discharge pipe means that the combine harvester can work with a large range of cutting widths, and ensures that the operator has a clear view of the discharge outlet at all times.
The aperture and closer of the discharge pipe is be controlled easily from the cab via the Commander Control.

Chaff spreader
Like the straw chopper, the chaff spreader is designed to distribute material over even the broadest cutter bars, for perfect mixing of the chopped material.
The transfer pan (which transfers the product to be processed) ensures uniform chaff distribution, while a conveyor with metal chutes directs the chaff to the four-blade rotors.
Optimised distribution is ensured by deflectors that are adjustable to cater for different operating conditions.

Putting every ounce of power to work
Power is taken off from both ends of the crankshaft, making it possible to separate hydraulic and mechanical functions, and ensuring a direct transmission system with no power losses.
This also means that fewer drive belts are used, and that the belts themselves are more accessible, reducing the running costs for the combine harvester.

DCR – SCR Engine
The DCR (Deutz Common Rail) engine uses two injection pumps lubricated with engine oil. This solution is safer and more effective than a conventional system, as the lubrication of the pumps is not dependent on fuel flow.
SCR is an exhaust after-treatment system which reduces nitrogen oxide emissions in the exhaust gas by selective catalytic reduction with AdBlue® additive.

Four-speed transmission
The four-speed hydrostatic transmission lets the driver maintain the ideal speed for all harvesting conditions. The ideally spaced ratios ensure that there is always plenty of torque on tap to tackle even the most critical traction conditions.

Load sensing hydraulic system
C9000 Series machines are equipped with an extraordinary hydraulic system which delivers the ideal flow of hydraulic oil to power all the main control functions while also ensuring superlative precision and smoothness.
The pump is built for superior durability and reliability, and is suitably sized to cater for any power demand.
The 135 cc displacement Load Sensing system optimises power delivery and consumption. The hydraulic pump is controlled in relation to load, so that oil is delivered at the exact pressure and in the precise quantities necessary for the effective demand.

(Source – http://www.deutz-fahr.com/en-GB/products/combine-harvesters/1206-serie-c9000)

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