An engine boost of 37.2kW (50hp) through Deere’s Intelligent Power Management (IPM) provides the flagship 6250R with up to 223kW (300hp) when required.
Both models weigh 9300kg in their standard form but both tractors can be ballasted up to 15 tonnes.
Both new tractors are powered by a 6.8 litre PowerTech PSS engine with dual turbochargers which use Diesel Particulate Filters and Selective Catalytic Reduction to adhere to Final Tier 4 emission standards.
The SCR system is a post-combustion treatment of the engine exhaust gases and requires the use of diesel exhaust fluid, or AdBlue, at the rate of about two to three percent of diesel fuel use.
PUNCHY
The engines punch out maximum torque at 1600 engine revs of 1074nM and 1167nM respectively for the 6230R and 6250R. Fuel tank capacity is 470 litres while the Adblue tank can hold 29 litres. The wheelbase on both tractors is 2900mm.
John Deere has upgraded the AutoPowr transmission for the two new models which allows for 100% mechanical power available at 3.5km/h for heavy draft operations, 11km/h for light draft work, 22.5km/h for heavy transport and 47.2km/h for light transport duties.
Once running at maximum road speed, engine revs automatically drop and 50 km/h is maintained at 1630rpm and 40km/h at a miserly 1300rpm.
HYDRAULICS
Equipped with a pressure and flow compensated hydraulic system, the 6R tractors have a maximum flow of 160 litres a minute at 1500rpm. Up to six hydraulic couplings or SCVs with individual pressure-relief levers are available and lift capacities are 10.4 tonnes on the rear hitch and five tonnes at the front. The front hitch can be optioned with two hydraulic couplings.
The 6230R and 6250R tractors also feature hydro-pneumatic cab suspension (called HCS Plus) which helps isolate noise and vibration from the cab interior.
Self-levelling TLS Plus Triple-Link suspension is also new on the front axle. The system automatically adjusts sensitivity and suspension rate, and synchronises with hitch sensors to compensate for power hop under heavy draft conditions.
Key service points on the new 6Rs include a 750-hour engine oil filter, fuel filter and engine oil change over interval.
In the cabin, there is an option to use the all-new CommandPRO joystick. Top speed can be reached with the push of just one button and 11 programmable buttons are available for the hitch, power take off, hydraulic couplings and AutoTrac controls.
The functionality of CommandPRO allows the tractor to be driven from top speed to a stand-still by pushing or pulling the joystick.
Lower speeds from zero to 2km/h can be achieved with a creeper function. Both the joystick and pedals can be operated at the same time, and there is no need for an external ISOBUS joystick as the driver can also operate the tractor and ISOBUS functions simultaneously.
More details HERE.
