Hydraulic grader blade 620 G-Tier

Product summary
The 620 G-Tier Motor Grader from John Deere. Key published data:

• Net power: 160 kW (215 hp)
• Operating weight: 18 340 kg (40,433 lb.)
• Blade pull: 14 091 kg (31,066 lb.)
• Net torque rise: 40%

Controls

• Fingertip: EH fingertip controls integrated into each armrest, replacing front-console levers; steering via left-armrest lever or steering wheel.
• Joystick: optional dual-joystick for reduced hand motion during direction and gear changes; steering via left joystick or steering wheel.
• Antler rack: traditional mechanical antler-rack controls available.

Circle options
Multiple circle configurations are available:

• Premium Circle: fully sealed bearing style, exclusive to John Deere; greasing every 500 hours; increases circle torque up to 40% and speed up to 15% vs. single-input; slip clutch standard.
• Single Input Circle: single gearbox, suitable for lighter-load rotation; slip clutch optional.
• Dual Input Circle: two hydraulic motor inputs to improve circle-drive gearbox durability for frequent heavy-load rotation; slip clutch optional (standard on premium).

Maintenance and uptime
Design prioritizes serviceability and cooling:

• Ground-level service access: daily service points (fuel and DEF) grouped on left side; periodic maintenance points on right side with vertical spin-on filters.
• Superior cooling package: accessible coolers and hinged swing-out fan; variable-speed, auto-reversible fan for debris cleaning; reversing fan standard.

Operator-focused features
Transmission and assist systems to improve productivity:

• Transmissions: proven 8F/8R transmissions; manual or Auto-Shift Plus available.
• Event Based Shifting (EBS): shift logic senses engine load and optimizes shift timing, reducing need for inching pedal.
• Auto-Shift Plus: modulates clutches for smooth start-to-speed transitions without inching pedal; auto-shifts between gears 4–8 for roading; configurable monitor includes Hill Hold and adjustable minimum RPM (800/1000/1200) to raise hydraulic flow when required.

Technical specifications

• Engine manufacturer: John Deere
• Engine model: PowerTech PSS 6.8L
• Cylinders: 6
• Displacement: 6.8 L (414 in³)
• Net power: 160 kW (215 hp)
• Peak engine torque: 1005 Nm (741 lbf·ft)
• Torque rise: 49%
• Net power by gear: Gear 1 = 112 kW (150 hp); Gear 2 = 123 kW (165 hp); Gear 3 = 134 kW (180 hp); Gear 4 = 142 kW (190 hp); Gear 5 = 149 kW (200 hp); Gear 6 = 153 kW (205 hp); Gear 7 = 157 kW (210 hp); Gear 8 = 160 kW (215 hp)
• Transmission manufacturer: John Deere
• Speeds forward/reverse: 8 / 8
• Front wheel drive: No
• Axle oscillation: ±32°
• Front wheel lean: ±20°
• Service brake type: multiple wet discs
• Service brake actuation: hydraulic
• Overall length: 8890 mm (29 ft 2 in)
• Height over ROPS: 3180 mm (10 ft 5 in)
• Transport width: 2490 mm (98 in)
• Wheelbase: 6160 mm (20 ft 3 in)
• Bladebase: 2570 mm (8 ft 5 in)
• Moldboard sideshift (right/left): 683 mm (26.9 in)
• Shoulder reach (right/left): 2083 mm (6 ft 10 in)
• Circle rotation: 360°
• Turning radius - minimum: 7.21 m (23 ft 8 in)
• Frame articulation: ±22°
• Fuel tank: 416.5 L (110 US gal)
• Operating weight (published summary): 18 340 kg (40,433 lb.)
• Operating weight (spec table): 15 744 kg (34,710 lb.)
• Weight with push block & ripper: 18 302 kg (40,350 lb.)
• Operating weight - maximum: 22 680 kg (50,000 lb.)