644 G WHEEL LOADER
Mid-Size Wheel Loader
- Net Power: 169 kW (227 hp) at 1,800 rpm
- Operating Weight: 17 985–18 205 kg (39,650–40,135 lb.)
- Bucket Capacity: 3.1–3.2 m3 (4.00–4.25 cu. yd.)
View Product Brochure
6.8L (414 cu. in.) engine choices include:
- EPA Tier 4/EU Stage V John Deere PowerTech™ PVS
- Tier 3/Stage IIIA PowerTech™ Plus
- Tier 2/Stage II PowerTech™
- Common controls will be familiar to both novice and experienced operators. Pilot controls are intuitive to operate.
- Optional front-differential lock provides additional traction in muddy or loose-material conditions. In-cab adjustable boom-height kickout and return to carry as well as return to dig can be easily activated from the convenient touchpad, speeding production in repetitive applications.
- Roomy standard cab features ergonomically placed joystick controls, foot pedals, and sealed-switch module. Seat-mounted right-hand joystick includes two programmable multifunction buttons.
- Optional premium cab is also available.
- Coupler accepts both K-Series and L-Series buckets and attachments to help maximize machine utilization and fleet versatility.
- All daily service points including fuel are conveniently grouped on the left side of the machine at ground level, for easy access.
- Hinged doors provide wide-open access to the engine, the cooling system, and other components.
Compare the specifications of up to 4 models
|Engine Manufacturer||John Deere|
|Engine Model||PowerTech PVS 6068H|
|Emission Rating||Tier 4 / Stage V|
|Displacement, ltr (Inches³)||6.8 (414)|
|Rated Speed, rpm||1800|
|Engine Output - Net, kW (hp)||169 (227)|
|Torque, Nm (lbf / ft)||981 (724)|
|Front Differential Type||Open|
|Rear Differential Type||Open|
|Tire size - Standard||23.5 R25|
|Service Brake - Type||Wet Disc|
|Service Brake - Actuation||Hydraulic|
|Parking Brake - Type||Wet Multi Disc|
|Height - Over Cab, mm (ft/in)||3460 (11 ft 4 in)|
|Wheelbase, mm (ft/in)||3260 (10 ft 8 in)|
|Ground clearance, mm (inches)||422 (16.6)|
|Width Over tires - Std, mm (ft/in)||2765 (9 ft )|
|Height - Pivot Pin, mm (ft/in)||4130 (13 ft 7 in)|
|Reach - At 2130mm 45° Dump, mm (ft/in)||1630 (5 ft 4 in)|
|Fuel Tank, ltr (gallons (US))||300 (79.3)|
|Hydraulic Tank, ltr (gallons (US))||100 (26.4)|
|Heaped Capacity, m³ (yd³)||3.25 (4.25)|
|Breakout - Bucket , kgf (lbf)||14424 (31799)|
|Ride Control System||Optional|
|Pump Flow - 1, lt/min (gallons (US) / min)||330 (87)|
|System Pressure, bar (PSI)||231 (3350)|