Machinery News

  • Written by: Farmers Guide
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New tractor transmission wins IMMA

JohnDeeres DirectDrive transmission was judged winner of the tractor category inthe new International Machinery Manufacturers Awards (IMMA), which werepresented at Cereals 2014 in June. A 6190R tractor equipped with DirectDrivewas displayed on the IMMA stand throughout the event.


The International Machinery Manufacturers Awards, the new Oscarsfor agricultural machinery, were launched by Cereals event organiser HaymarketExhibitions to recognise companies that have produced machines that stand outfrom the crowd by delivering a mix of innovation, cost-effectiveness and value.


The award judges, drawn from IMMA supporters theAgricultural Engineers Association, The Institution of Agricultural Engineers,The Royal Agricultural University and Farmers Weekly,commented: Its not often that a new transmission comes along, but this one isclearly innovative.  The potential forgreater efficiency and lower fuel use is great.


Thenewly designed 24-speed DirectDrive transmissionemploys Formula 1 technology on John Deeres six-cylinder 6R Series tractor range to combine the handling comfort ofan infinitely variable shift transmission (IVT) with exceptional efficiency. Itis designed to deliver maximum productivity with lower fuel consumption fortasks that need continuous power, such as ploughing and towing, pto workand road transport.


Thetransmissions dual clutch technology has become the benchmark in the luxurycar industry, and is now available in a tractor for the first time, setting newstandards in terms of shifting speed and operator comfort. Significant fuelsavings of up to four per cent, compared with currently available transmissions,have been measured on the test facilities at John Deeres tractor factory inMannheim and during independent field tests.


Thesemi-automatic DirectDrive transmission system consists of eight powershiftspeeds in each of three ranges, which are specifically designed for typicalfield applications. The system enables the driver to remain in the selectedrange for all relevant operations, so switching between ranges is rarelynecessary, and the resulting minimal interruption to the power flow adds to theoverall efficiency of the tractors power train.


Thedriver can choose between a manual mode to take command of forward and reversespeed changes via the tractor control lever, or an automatic mode. In thismode, the transmission enables fast changes between the eight speeds under fullload, and also provides fully automatic changes between the A, B and C ranges.

Dependingon the actual load the Efficiency Manager function, also enabled in Auto mode,automatically matches the appropriate speed and engine rpm for maximum fuelefficiency. The tractors 40 or 50kph (in Eco mode) top speeds are alsoachieved with significantly reduced engine rpm. As a result, the newDirectDrive transmission offers a cost-effective alternative to existing IVTs.


DirectDriveis optionally available on the latest John Deere 6R Series tractors from the140hp 6140R to the top of the range 210hp 6210R.



  • Written by: Farmers Guide
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