Forestry winches

90 GKpower

90 GKpower

90 GKpower is a professional forestry winch with a constant pulling force of 8,5 t. A thinner (lightweight) wire rope allows greater productivity and faster timber harvesting.

 
 
  • Adjustable brake release speed and brake force
  • AUTO STOP function (limit switch)
  • Unwinding device with two pulleys
  • Electronically adjustable brake opening time
  • Remote control Terra FA5-A1
  • Easy setting up
  • Maxi drum
  • Large storage spaces in front of winch
  • Plenty of storage area for additional equipment
  • Hydraulic hinged butt plate
  • Foldable window guard
Forestry winch 90 GKpower with constant pulling force 8,5t the largest and robustest in its category. The winch is positioned closer to the tractor and the pulley is fixed lower, which improves and lowers the winch center of gravity. Therefore, there is less chance for the tractor to be lifted. It has an extra large drum capacity, which allows more wound up wire rope. For easy work there are large storage places (PATENT) on the front of the winch, that the dirt from the wheels of the tractor does not get between the chain and other equipment. In order to facilitate the manipulation and stacking of logs, there is also a hydraulic hinged butt plate.

Watch the video of 120Gpower

HOW DO WE PROVIDE A CONSTANT PULLING FORCE?

HOW DO WE PROVIDE A CONSTANT PULLING FORCE?

Active Force Control is a special pulling force measurement and regulation solution. The pulling force is measured directly on the wire rope and is electronically regulated. Thus, the pulling force does not depend on the wear of the clutch, temperature and humidity, the preload of the wire rope, and the amount of wound wire rope on the drum. Thus, the pulling force remains the same at all times, the pulling rope is thinner and consequently longer, and the tractor can be of lower power. A lighter wire rope helps to increase productivity and faster wood harvesting on the one hand and to reduce user fatigue on the other.

ADJUSTABLE SPEED AND BRAKING FORCE

ADJUSTABLE SPEED AND BRAKING FORCE

Adjustable braking force (progressive break system)

Adjustable braking force allows the wire rope to be unwound without the unwinding device, regardless of the force on the pulling rope between the winch and the load.

UNWINDING DEVICE AND AUTO STOP

UNWINDING DEVICE AND AUTO STOP

To make the wire rope unwinding easier you can choose a winch with an integrated unwinding device. This type of winch also guarantees a constant tension of the wire rope between the unwinding pulley and the drum, thus preventing damage to the drum or pulley and enabling a longer service life.

AUTO STOP function(limit switch) automatically stops the function of winding the wire rope on the drum. This function prevents mechanical damages of the unwinding device, entanglement and wire rope damages.

The sensor measuring pulling force of the winch is directly installed on the pulling rope to enable precise measurement of the force on the wire rope. The measured pulling rope force is regulated with the...

<span>Proportional valve for continuous pressure adjustment.</span>

Proportional valve for continuous pressure adjustment.

Unwinding device with two hydraulic motors.

Unwinding device with two hydraulic motors and two pulleys - for stronger tension of wire rope between drum and unwinding device as well as higher unwinding force.

The electronically adjustable brake opening time allows for a slower release of the tension of the wire rope, thus preventing the drum from uncontrolled rotation and subsequent entanglement of the wire rope.

<span>Remote control Terra Funk FA5-A1 for precise break release.</span>

Remote control Terra Funk FA5-A1 for precise break release.

The PTO shaft is installed at the rear side of the winch, enabling a better stability of the tractor and winch and reducing the risk of damaging the cardan shaft.

The drive consists of a worm gear enabling high gear ratios, and spur gears elements immersed in the oil bath which enables higher efficiency, reduces maintenance requirements and increases its life span.

<span>A guide for precise winding of wire rope on a drum.</span>

A guide for precise winding of wire rope on a drum.

Pre-loaded wire rope tensioning ˝Roller˝for more precise wire rope winding.

<span>The multi-plate clutch prevents overheating/slipping of the clutch (8 plates).</span>

The multi-plate clutch prevents overheating/slipping of the clutch (8 plates).

<span>HAWE seated solenoid valve with a high-pressure filter integrated in the control block for preventing pressure loss.</span>

HAWE seated solenoid valve with a high-pressure filter integrated in the control block for preventing pressure loss.

<span>Hydraulic hinged butt plate lowers the centre of gravity for easier timber handling and log stacking.</span>

Hydraulic hinged butt plate lowers the centre of gravity for easier timber handling and log stacking.

Technical data

Technical data

Model   90 GKpower
Drive   Worm gear
Pulling force - internal/external diameter kN 85
Pulling force - external diameter kN 85 - at 110 m / 13 mm rope
Brake force kN 150
Wire rope medium speed m/s 0,56  (540 min-1)
Drum capacity length/diameter m/mm 110 / 13
130 / 12
Recommended tractor power kW / HP 88 / 120
Clutch plates pcs 8
Pump   Gear pump
PTO shaft revolutions  min-1 750
Oil pressure MPa 16
Oil quantity I 3,5
Width mm 2200
Hydraulic hinged butt plate mm 2400 - Option
Depth
Height without safety guard
Height with safety guard
mm 970
1500
2300
Weight without wire rope kg 930
Unwinding device   Standard
Unwinding with two hydraulic motors   Standard
Wire rope guide   Standard
Auto stop function   Standard
Adjustable braking force   Standard
Adjustable braking force speed   Standard
Remote control TERRA FUNK FA5-A1   Standard

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