640L-III Cable Skidder Studio Image

640L-III

The 640L-III Cable Skidder offers efficiency and productivity in timber harvesting with its powerful engine, robust cable arch, and advanced control systems, ensuring superior performance and reliability in the most demanding forestry environments.

Key Features:
  • Gross Power: 237 hp (177 kW)
  • Gross Torque: 756 ft-lb (1025 Nm)
  • Operating Weight: 36,962 lb. (16,766 kg)
  • Continuously Variable Transmission (CVT)
Continuously Variable Transmission (CVT) Offers the Best of Both Worlds
Computer-generated graphic of the green Continuously Variable Transmission (CVT) used in L-III skidders

The CVT combines the efficiency of a direct-drive with the smooth operation of a hydrostatic drive, delivering efficient power and eliminating the need for gear shifting. This helps operators maintain desired speeds and maximizes productivity by easing the learning curve.

Easy Serviceability Increases Uptime
Side view of a 768-III bogie skidder's engine housing, featuring removable panels and swing-out coolers

The skidders are designed for efficient maintenance with ground-level access to daily service points, swing-out coolers for easy debris cleaning, and detachable engine panels for wide-open access. These features, along with remote diagnostics and extended hydraulic filter intervals, help reduce downtime and prevent costly repairs.

Primary Display Unit
Operator's hand touching a point on a precision forestry display unit's screen, which is mounted within a green cab

Ergonomic, 12-in. Primary Display Unit centralizes machine gauges, work-time analytics, TimberMatic™ Maps/TimberManager™, camera views, and enables Remote Display Access for faster remote diagnostics and reduced downtime.

Description: 640L-III
Key Specs
Engine ManufacturerJohn Deere
Engine ModelPowerTech™ PSS 6.8L
Engine Torque756 lb-ft
Displacement415 in³
Steering Articulation Angle45 degree (angle)
Final Tier 4/EU Stage V Engine
Engine ManufacturerJohn Deere
Engine ModelPowerTech™ PSS 6.8L
Non-road Emission StandardEPA Final Tier 4 / EU Stage V
Engine Output237 hp
Engine Torque756 lb-ft
Number of Cylinders6
Valves Per Cylinder4
Displacement415 in³
Engine Bore and Stroke4.17 x 5.00 in.
Fuel SystemHigh Pressure Common Rail
AspirationTurbo charging and charge air cooling
Air CleanerDual stage with safety element
Engine Cold Start SystemGlow plugs
Powertrain
Speed Ranges, Forward and Reverse6
Maximum Travel Speed with 30.5-32 Tires15.37 mph
Front axle oscillation, stop to stop30 degree (angle)
Axle Options1400 Extreme Duty & 1400 Super Wide Extreme Duty (SWEDA™)
Differential (Front and Rear)Hydraulic locking, Operated on the go, Open Center Differential Lock
SteeringFully hydraulic, joystick
Articulation angle45 degree (angle)
Service Brake TypeInboard mounted, wet disc, oil cooled, front and rear axles
Parking Brake TypeAutomatically spring-applied, hydraulically released, sealed and lubricated, wet multi-disc
TransmissionContinuous Variable Transmission (CVT)
Hydraulics
PumpOpen circuit, axial piston, variable displacement
Maximum Displacement5.19 ci/rev
Electrical System
Voltage24 V
Number of Batteries2
Battery Capacity Per Each950 CCA
Standard Alternator Rating150 amp
Lights10 Standard; 14 Optional
Cooling
Cooling System TypeHeavy-duty radiator with continuous de-aeration tank and recovery reservoir
Fan Drive TypeHydraulic, Variable Speed, Reversing
Capacities
Fuel Tank90.4 gal.
Hydraulic Tank32.6 gal.
Diesel-Exhaust Fluid (DEF) Tank Refill Capacity5.2 gal.
Dozer Blade
TypeStandard Stacking Blade
Dozer Blade Height27.1 in.
Dozer Blade Width86.3 in.
Width (optional)116.6 in.
Blade ControlJoystick
Winch
Winch ControlJoystick control, hydraulically driven
5/8-in. Cable Capacity (2-Speed 4000 Winch with 204-mm (8-in.) Drum)252 ft
3/4-in. Cable Capacity (2-Speed 4000 Winch with 204-mm (8-in.) Drum)177 ft
7/8-in. Cable Capacity (2-Speed 4000 Winch with 204-mm (8-in.) Drum)128 ft
1-in. Cable Capacity (2-Speed 4000 Winch with 204-mm (8-in.) Drum)100 ft
Low-Speed Line Pull - 5/8-in. Cable - Bare Drum at Stall with 2-Speed 4000 Winch47997 lbf
High-Speed Line Pull - 5/8-in. Cable - Bare Drum at Stall with 2-Speed 4000 Winch31990 lbf
5/8-in. Cable Capacity (2-Speed 6000 Winch with 279.5-mm (11-in.) Drum)390 ft
3/4-in. Cable Capacity (2-Speed 6000 Winch with 279.5-mm (11-in.) drum)267 ft
7/8-in. Cable Capacity (2-Speed 6000 Winch with 279.5-mm (11-in.) Drum)197 ft
1-in. Cable Capacity (2-Speed 6000 Winch with 279.5-mm (11-in.) Drum)150 ft
Low-Speed Line Pull - 5/8-in. Cable - Bare Drum at Stall with 2-Speed 6000 Winch49696 lbf
High-Speed Line Pull - 5/8-in. Cable - Bare Drum at Stall with 2-Speed 6000 Winch33131 lbf
Low-Speed Line Speed - 5/8-in. Cable - Bare Drum at 1800 rpm with 2-Speed 6000 or 4000 Winch60 fpm
High-Speed Line Speed - 5/8-in. Cable - Bare Drum at 1800 rpm with 2-Speed 6000 or 4000 Winch90 fpm
Dimensions
Overall Length298.9 in.
Overall Width127.3 in.
Height Over Cab132.5 in.
Wheelbase144.8 in.
Ground Clearance21.8 in.
Dozer Blade - Dig Depth14.1 in.
Maximum Blade Lift Above Ground59.7 in.
Steering Articulation Angle45 degree (angle)
Tire Size30.5 - 32
Operating Weight
Operating Weight36962 lb.

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