The 643L boasts significantly more horsepower for superb responsiveness. Unsurpassed power-to-weight ratio ensures steady multifunction performance in wet or hilly conditions.
Optimal weight distribution and longer wheelbase improve balance, for better stability when climbing hills and controlling trees. The 643L's wheelbase is 229-mm (9 in.) longer than their previous model.
Cooling fan and other cooling system components swing out for quick and easy cleaning. Air-intake compartment is sealed off from the engine compartment to keep things cool.
In addition to the larger cab size, the controls allow operators to configure joystick buttons to their own individualized preference. The optional joystick and foot controls deliver smooth, low-effort control to help reduce operator fatigue over long shifts.
New one-button Quick Dump opens both accumulating and grab arms, releasing trees from the pocket. Head-tilt and arm functions are combined into a single motion, minimizing fatigue.
Specs & Compare
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Wheeled Feller Buncher
|Engine Manufacturer||John Deere|
|Engine Model||PowerTech PSS 6.8L|
|Emission Rating||Tier 4|
|Displacement, ltr (Inches�)||6.8 (414)|
|Engine Output, kW (hp)||157 (211)|
|Engine Torque, Nm (lbf / ft)||923 (680)|
|Number Of Speeds - Forward||2|
|Number Of Speeds - Reverse||2|
|Std tire size front||28 L x 26|
|Service Brake Type||Wet Disc - Inboard|
|Parking Brake Type||Spring on / hydraulic release|
|Overall Length, mm (ft/in)||6293 (20 ft 8 in)|
|Height Over Cab, mm (ft/in)||3216 (10 ft 7 in)|
|Width, mm (ft/in)||2913 (9 ft 7 in)|
|Wheelbase, mm (ft/in)||3023 (9 ft 11 in)|
|Ground Clearance, mm (inches)||484 (19)|
|Steering Articulation Angle, � �||45|
|Fuel Tank, ltr (gallons (US))||396 (104.6)|
|Hydraulic Tank, ltr (gallons (US))||169.1 (44.7)|
|Alternator Capacity, Amp||150|
|Travel Speed, kph (mph)||17.5 (10.8)|
|Oscillation Point||Front Axle|
|Oscillation Angle, � �||15|
|System Voltage, V||24|
|Operating Weight, kg (lbs)||16383 (36120)|