The simple, reliable mechanical drive system used on Guardian rear boom sprayers transfers more power to the ground for higher productivity, better fuel economy and lower operating costs.
POWERFUL, QUIET ENGINES
Cummins turbocharged diesel engines power both Guardian rear-boom sprayers. These engines are the quietest in the industry for this horsepower range. They provide high torque rise for added power when you need it. For added traction, use the foot-operated differential lock to transfer power to both rear wheels. An on-demand, front-wheel assist option is available on the larger 275-horsepower SP.275R Guardian model.
Both Guardian rear boom sprayer models use the same stacked, one-pass cooling package. Instead of modules being layered front to back, they are positioned on top of each other, so all receive the benefit of the same, cool air flow. The high-volume fan pulls air through the entire system in a single pass, allowing for more efficient flow of cooler air through all of the cores for maximum efficiency.
Rugged heavy-duty Allison automatic transmissions smoothly transfer power through the drivetrain. A locking torque converter maintains constant speed even in uneven ground conditions. The five-range SP.240R transmission achieves speeds up to 40mph, while the SP.275R travels up to 46 mph. A cruise control switch on the armrest console allows you to return to a pre-set speed with the push of a button.
HEAVY-DUTY, FULLY SUSPENDED AXLES
A crop clearance up to 48 inches allows you to perform The structural steel front axle features massive 2.5-inch kingpins and bushings. A full 11 inches of suspension travel provides for a very smooth ride. The rear axle features a heavy-duty design with formed steel receiver tubes to handle harsh ground conditions. The active suspension system uses four air bags, gas shock absorbers, trailing arms and a large-diameter anti-sway torsion bar to keep the boom parallel to the ground. This system maintains a constant height and smooth ride.
FINAL DRIVE OPTIONS
Heavy-duty, cast-iron drop boxes provide 48 inches of crop clearance and are standard on the SP.275R and optional on the SP.240R. A 42-inch clearance angle drive shaft is standard equipment on the SP.240R.