Forestry winches

70 GK

70 GK

70 GK is a professional forestry winch with a constant pulling force of 6,8 t. A thinner (lightweight) wire rope allows greater productivity and faster timber harvesting.

 
 
  • SMART 3in1
  • AUTO STOP function (limit switch)
  • Unwinding device
  • Convenient positioning
  • Maxi drum
  • Large storage spaces in front of winch
  • Plenty of storage area for additional equipment
  • Drive over bevel helical and spur gears
  • Hydraulic hinged butt plate
  • Foldable window guard
 Forestry winch 70 GK with constant pulling force 6,8 t enables safe work, as the winch is positioned closer to the tractor, and the pulley is fixed lower, which puts the center of gravity of the winch lower. 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 70GK

Watch the video 70GK

SMART 3in1

SMART 3in1

(1) When pulling logs with a tractor, you may encounter some obstacles on the road (hill, roots etc.). If the tractor is not able to overcome these obstacles, the unwinding function can be switched into the mode without the assistance of the unwinding device and you can continue driving with a taught wire rope between the winch and the load. (2) The unwinding device can be turned on and off without delay (the standard model has a 1.5 sec. delay). (3) The SMART 3in1 function ensures additional tension of the wire rope between the unwinding pulley and drum.

This function is only available with the remote controls Teleradio, Terra funk and manual console.

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 valve for adjusting the brake opening speed enables slower release of the wire rope tension. This prevents uncontrolled spinning of the drum and resulting entanglement of the wire rope.

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

Proportional valve for continuous pressure adjustment

Proportional valve for continuous pressure adjustment

Proportional valve for continuous pressure adjustment.

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.

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

<span>Pre-loaded wire rope tensioning ˝Roller˝for more precise wire rope winding</span>

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

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

<span>The multi-plate clutch prevents overheating/slipping of the clutch (6 plates).</span>

The multi-plate clutch prevents overheating/slipping of the clutch (6 plates).

The multi-plate clutch prevents overheating/slipping of the clutch (6 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.

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.

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

Technical data

Technical data

Model   70 GK
Drive   Worm gear
Pulling force - internal/external diameter kN 68
Pulling force - external diameter kN 68 - at 130 m / 12 mm rope
Brake force kN 85
Wire rope medium speed m/s 0,50  (540 min-1)
Drum capacity length/diameter m/mm 130 / 12
155 / 11
Recommended tractor power kW / HP 74 / 100
Clutch plates pcs 6
Pump   Gear pump
PTO shaft revolutions  min-1 750
Oil pressure MPa 16
Oil quantity I 3,5
Width mm 1920
2100 - Option
Hydraulic hinged butt plate mm 1920
2400 - Option
Depth
Height without safety guard
Height with safety guard		 mm 970
1500
2300
Weight without wire rope kg 680 / 720 - Option
Unwinding device   Standard
Wire rope guide   Standard
Auto Stop function   Standard
Smart 3in1   Standard

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