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Bigger is better for New Holland’s rotary combine range

In a bid to further increase throughput, New Holland has updated its CR rotary and smaller CX straw walker combine ranges.



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The CR8.80 is the highest powered narrow-body combine in New Holland’s range.
The CR8.80 is the highest powered narrow-body combine in New Holland’s range.
Bigger is better for New Holland’s rotary combine range

Claiming to increase combine capacity by up to 10 per cent, New Holland has made several revisions to its twin-rotor CR combine range.

 

Available in two threshing rotor sizes, the firm’s CR combine range comprises six models. Narrow body CR7.90 and CR8.80 models feature the firm’s 432mm (17in) diameter TwinPitch threshing rotors, while wider body CR8.90-10.90 models get larger 559mm (22in) TwinPitch Plus rotors.

 

To allow more straw to pass through its rotors and ultimately increase throughput, rotor cage height on narrow body machines has been raised by 10mm.

 

Similarly, larger bodied machines have also had some substantial changes, with the rotor’s core having been reduced 38mm (1 ½ in) in size to provide more area to accommodate straw. Overall 559mm (22in) rotor diameter has been maintained by fitting longer rasp bars.

New Holland’s CR10.90 is currently the most powerful combine on the market, churning out up to 700hp
New Holland’s CR10.90 is currently the most powerful combine on the market, churning out up to 700hp

Other features include in-cab adjustment of rotor vanes, and a new auto-reset overload protection system for the main concave.

 

To combat previous issues with residue management, the firm has made a number of changes to the chaff spreader and straw chopper. Thanks to increased rotor speed, and jet-engine like shrouds, chaff spreading is now via high volumes of air flow, rather than previous impact-based system.

 

The chopping rotor has also been revised to accommodate a 500rpm increase in speed. A shorter and more consistent chop length should also be possible, thanks to increase in static knife length by 50mm.

 

To effectively spread the straw, the firm’s optional Opti-Spread system (standard on CR9.90 and 10.90 models) now features larger motors offering a 25 increase in torque, and V-shaped paddles to provide more effective spreading up to the machine’s maximum 13.7m (45ft) cutting width.

  • CX5000 and 6000

For those after big features in a smaller package, New Holland’s CX5000 and CX6000 Series straw walker combines have been given a number of updates.

 

To improve operator comfort, the firm’s smallest CX straw walkers now feature a 20cm wider cab. To provide an element of familiarity across its combine ranges, controls inside the CX’s cab have been simplified and feature a similar layout to other models.

CX Series cab is now 20cm wider and features similar controls to its larger CR combines.
CX Series cab is now 20cm wider and features similar controls to its larger CR combines.

Ideally suited to changing conditions or switching between crops, the firm’s OptiThresh system allows quick adjustment of threshing aggressiveness. By moving one lever on the side of the combine, concave wrap on the separator drum can be adjusted from 80 to 120 degrees.

 

Offering automatic walker speed adjustment, New Holland’s OptiSpeed system is now featured. When going uphill, this slows the walkers to ensure straw is shaken for long enough, and when downhill walkers are sped up to reduce the chance of blocking. Similarly, the firm’s OptiSpeed system adjusts fan speed to suit downhill and uphill conditions limiting losses.

 

Previously a restricting factor on smaller CX combines, New Holland says how its cleaning shoe now has up to 15 per cent extra capacity; thanks to an additional cascade half way down the grain pan which allows air to clear the grain of chaff sooner.

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