JOHN DEERE 622G MOTOR GRADERS

Technical Description

The 2020 John Deere 622G Motor Grader is a high-performance, 6-wheel drive machine engineered for precision grading and heavy-duty earthmoving. It features a 14 ft (4.27 m) blade length with a standard moldboard thickness of 7/8 inch (22 mm) and a blade height ranging from 24 to 27 inches depending on configuration. The moldboard is constructed from high-strength, wear-resistant steel with reversible end bits and quick-change replaceable wear inserts. Maximum depth of cut reaches approximately 30.5 inches (775 mm), while maximum lift above ground is about 18.9 inches (480 mm). The blade side shift capability allows for up to 26.1 inches (663 mm) of lateral movement, enhancing grading flexibility. The drawbar circle moldboard offers standard and top adjust positions with dual lift cylinders for precise control. Front axle oscillation is around 15°, and rear axle oscillation ranges from 22° to 32°, ensuring stability on uneven terrain. The grader is powered by a John Deere PowerTech engine with approximately 259–281 hp (193–209 kW) and 12.5 L (763 cu in) displacement, paired with an 8-speed forward and 6-speed reverse power-shift transmission. Hydraulic system features a closed-center, electro-hydraulic load-sensing variable displacement pump with a flow rate of about 74 gal/min (280 L/min). Operating weight is approximately 40,000 lb (18,144 kg), with a top speed of 31 mph forward and 24.5 mph reverse.