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Tigercat 635G skidder

635G Skidder

The 635G is Tigercat's highest capacity skidder. With six-wheel drive and a massive grapple, the machines are built for extreme duty and super high production logging operations.

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Tigercat builds the most advanced, efficient and refined skidders. The 635G skidder has seen further improvements driveline capacity in both the front and rear bogie axles. Hydraulic system improvements boost efficiency and performance to new heights.

Tigercat power. Tigercat support.

The 635G skidder is Tigercat FPT Tier 2 or Tier 4f powered. The Tier 4f engine conforms to the latest emissions standards in North America and Europe.

With the Tier 2 engine option, Tigercat brings the benefits of Tigercat power and support to harvesting professionals around the world.

Six wheel skidder

With six-wheel drive and a massive grapple, the 635G is built for extreme duty and super high production logging operations. Ideal applications include very soft terrain, long distance skidding, oversized logs and continuous duty cycle around-the-clock applications.ᅠ

The difference is in the drive…

Hydrostatic drive offers many advantages. Performance in tough terrain is excellent because full tractive effort is available at any engine speed, minimizing wheel spin and improving breakout performance. The operator appreciates simplified drive control with no gear shifting.

Electronic control technology combined with Tigercat’s unique hydrostatic drive system allows the skidder to operate at variable engine rpm, automatically increasing engine speed when additional horsepower is demanded. The result is improved fuel economy.

Key Benefits

  • Tigercat FPT N67 engine with Tier 2 or Tier 4f emissions compliance – clean, powerful and efficient; fully supported by Tigercat
  • Turnaround® equipped – the unique two-position rotating seat with full rear facing machine control
  • Electronic controlled hydrostatic drive – depress the pedal and go
  • Smooth, precise, responsive command of machine functions with advanced, robust electronic control system
  • Maximum tractive effort is always available, regardless of engine speed; high breakout performance with minimal wheel spin
  • Automatic variable engine speed contributes to excellent fuel economy
  • Super-durable, long-life centre section is constructed with thick steel plate, large diameter pins and tapered roller bearings
  • Advanced ergonomics – grapple, arch and steer functions are all controlled with armrest mounted joysticks
  • High performance, excellent traction and minimal wheel spin in adverse terrain
  • High capacity Tigercat dual cylinder grapple options with wide tip-to-tip opening to easily gather scattered bunches
  • Excellent visibility in every direction and clear sightline to all tires


Six-wheel skidders lowland logging
635G and C640E skidders working in the hardwood lowlands of coastal North Carolina. Download in HD
Skidder Seat Operation
This video details the procedure for setting the weight adjustment for the Tigercat skidder seat and also explains all the features, benefits and general operation of the new seat. Download in HD  


See below related files that you can download.

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Show measurements as:
LENGTH9 475 mm
WIDTH3 580 mm
WIDTH narrow offset3 250 mm
HEIGHT3 225 mm
WEIGHT24 720 kg
ENGINE Tier 4fTigercat FPT N67 Tier 4f
212 kW (285 hp) @ 2,200 rpm (rated)
216 kW (290 hp) @ 2,000 rpm (peak)
ENGINE Tier 2Tigercat FPT N67 Tier 2
215 kW (288 hp) @ 2,100 rpm (rated)
216 kW (290 hp) @ 2,000 rpm (peak)
AIR FILTRATIONPrecleaner and 2-stage engine air cleaner
TOP SPEED21 km/h (13 mph) with EHS®
COOLINGSide-by-side aluminum radiator, oil cooler, charge air cooler and A/C condenser
FANFlexxaire® variable pitch, reversing
Optional430 L
TRANSMISSIONSingle-speed mechanical
Variable speed hydrostatic
(2) Variable displacement motors
TRANSMISSION OptionalEnhanced High Torque EHS®(efficient high speed) drive
Variable speed hydrostatic
(2) Variable displacement motors
AXLE frontTigercat OB17, outboard planetary, barrel differential
+/-15° oscillation
AXLE rearTigercat WOB17 wide-spread bogie, outboard planetary, barrel differential
OptionalTigercat HOB17 high-clearance bogie, outboard planetary, barrel differential
DIFFERENTIAL LOCKSIndependent front and rear
PUMP, MAIN 1Piston for all machine functions
PUMP, MAIN 2Gear for cooling
FILTRATION(4) Spin-on, 7 micron full flow
CYLINDERS, ARCH(4) 127 mm (5 in) bore (dual function)
CYLINDERS, STEER(2) 95 mm (3.75 in) bore
CYLINDERS, BLADE(2) 95 mm (3.75 in) bore
SECONDARY BRAKESEnclosed, oil cooled
PARK BRAKEEnclosed, oil-cooled
Spring applied, hydraulic release
STANDARDDual function, high lift, continuous rotate
STANDARDTigercat 1,95 m² (21 ft²)
2-cylinder, plate or box tong
OPTIONALTigercat 2,32 m² (25 ft² )
2-cylinder, plate or box tong
WIDTH2 285 mm
With optional blade extensions2 920 mm
BATTERY(2) 12 v
ALTERNATOR80 amp, 24 v
CABInsulated, pressurized and isolation mounted
A/C, heater, defroster and pressurizer
(2) Doors with slide side windows and hinged screens
Forward sloping windshield
Machine monitoring system with LCD display
AM/FM digital stereo CD
SEATExtreme duty Turnaround®, air ride
Fully adjustable height, seatback recline, lumbar support and armrests
2-position mechanical lock, 100° rotating for rear-facing drive, heated and cooled
OPERATOR CONTROLSElectronic joysticks for arch/grapple/blade/steering
Electronic foot pedal, front and rear with forward/reverse selector switch for drive
Electronic control system with colour display screen interface for machine monitoring and function adjustment
STANDARDAlarm for reverse drive
Fuel suction strainer
Fire extinguisher
Pressurized water system
OPTIONALHydraulic winch
6) High output LED, (9) Standard output LED
Cold weather kit
CB radio
RemoteLog™ telematics system