John Deere 9R 640

The John Deere 9R 640 is a four-wheel drive (4WD) tractor in the 9R Series produced from 2021 onward. It is built in Waterloo, Iowa, USA. The tractor features a powerful 13.6L 6-cylinder turbocharged aftercooled diesel engine with electronic high-pressure common rail fuel system, delivering a gross engine power of 631.6 hp and maximum power of 681.2 hp. It has an 18-speed full power shift transmission (e18) with 18 forward and 6 reverse gears. The tractor includes advanced mechanical features such as inboard planetary final drives, electro-hydraulic differential locks front and rear, articulated power steering, and hydraulic wet disc brakes. The cab is standard with air-conditioning. Hydraulics are closed center pressure/flow compensated with multiple valve and pump flow options. The tractor hitch is IVN/IV type with rear lift capacities up to 20,000 lbs optional. The rear PTO is independent with a 1000 rpm type. Dimensions include a 154 inch wheelbase, 312.8 inch length, and a shipping weight of 46,680 lbs. Tires are 800/70R38 front and rear. Electrical system features a negative ground, alternator charging system with 250 amps standard and optional 330 amps, powered by three 12-volt batteries. The 9R 640 is related to the 9R 590 and the earlier 9620R model.