John Deere's all-new lineup of 400 Series self-propelled windrowers for 2010 include three new models: the 125-hp (93-kW) A400, 125-hp (93-kW) D400, and 200-hp (149-kW) R450. The A400 and R450 replace Deere's 4895 and 4995 self-propelled windrowers, respectively, while the D400 is specifically for draper applications.
Deere says the new windrowers will enable customers to cut more crop in a day with faster transport speeds, a smoother ride, and increased maneuverability compared to their predecessors. Maximum transport speeds have been increased up to 21 mph (34 km/h), allowing operators to spend less time traveling between fields and more time cutting hay. Larger available drive tires and a new independent rear suspension with steering assist contributes to improved ride quality.
The new rear-axle steering-assist system has three operating modes. From 0 to 4 mph (0 to 6 km/h) the system is inactive, allowing for improved operator control of the windrower at slow cutting speeds in challenging field conditions or when customers need to make sharp turns at the end of the field. The second mode is partially active at 4 to 8 mph (6 to 13 km/h). At those speeds, hydraulic cylinders attached to the rear caster wheels begin to work in unison with the front-drive wheels to allow for enhanced operator control of the windrower.
At speeds greater than 8 mph (13 km/h) the rear steer-assist system is fully active. In this mode, operators are better able to control the windrower when higher cutting speeds are reached or on the road during transport.
Under-frame clearance on the 400 Series was increased 7 in (178 mm) to accommodate large windrows without dragging crop. The windrower's new muffler reduces sound levels and provides a quieter working environment for the operator.
The 400 Series machines are CAN bus integrated to make diagnostics and calibration easier for service technicians, which saves time and money for routine maintenance and for repairs if needed.