CaseIH STX440QT Quadtrac

The CaseIH STX440QT Quadtrac is an articulated crawler tractor introduced in 2001, built in Fargo, North Dakota, USA. It features a powerful Cummins QSX15 14.9L 6-cylinder turbocharged aftercooled diesel engine producing 440 hp. The tractor has a 16-speed full power shift transmission with electro-hydraulic wet disc clutch. It offers advanced mechanical features including articulated crawler drive, inboard planetary final drives, hydrostatic power steering, and integrated hydraulic wet disc brakes. The hydraulics system is closed center load sensing with 4 to 7 rear valves and pump flow options of 40 or 55 gpm. The tractor hitch is IVN type with a rear lift capacity of 19500 lbs at 24 inches. The rear PTO is optional independent type with 1000 rpm. Dimensions include a 44 inch frame width and operating weight of 51335 lbs. Electrical system uses negative ground with 2 batteries at 12 volts. The STX440QT is part of the Steiger STX Series and related to the STX450QT model.