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Forestry winches
2x75 HK / HKpro

2x75 HK / HKpro

The double drum winch head with a constant pulling force 2x75HK / HKpro is the first winch head model with a constant pulling force, which is fixedly mounted on the tractor.

 
 
  • Pulling force is the same at all times and constant over the entire diameter of the drum
  • Wire rope is thinner and consequently longer
  • Greater capacity of the rope drum
  • Permitted simultaneous pulling of both drums
  • Compact design
  • Possible mounting on any tractor with more than 80 HP

The double drum winch head with a constant pulling force 2x75 HKpro with pulling force of 7,5 t has a double pulley and an unwinding device with two feed rollers and hydraulic motors for wire rope greater tension and greater unwinding force. Moreover, it has a SMART 3in1 function. The double drum winch head with a constant pulling force  2x75 HK is the basic version without unwinding device and SMART 3in1 function. Both models have an extra large drum capacity, which allows more wound up wire rope.

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.

The hydraulic unit has HAWE electromagnetic globe valves with a high-pressure filter and two proportional valves. The proportional valves allow for continuously adjustable pressure to provide constant pulling force.

WINCH DRIVE

WINCH DRIVE

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.

The UNWINDING DEVICE DRIVE implemented in 2 ways:

The UNWINDING DEVICE DRIVE implemented in 2 ways:

a) Drive via the hydraulic system of the winch: The winch has 2 additional pumps and valves installed.
b) Drive via the hydraulic system of the tractor: An additional hydraulic unit is connected to the hydraulic system of the tractor. The advantage of such drive is in the higher amount of oil, which allows for greater unwinding power.

The unwinding device with two pushing rollers and two hydraulic motors ensures greater unwinding power and allows for greater tension of the wire rope between the unwinding device and the drum during the winding process. It is possible to regulate unwinding speed of the wire rope.

Prebreak prevents uncontrolled rotation of the drum and subsquent entanglement of the wire rope.

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

An extra large drum capacity ensures that a longer rope can be wound to cover a larger area. It also reduces the loss of the pulling force with a fully wound drum.

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.

Double pulley.

Technical data

Technical data

Model   2x75HK 2x75HKpro
Drive   Worm gear Worm gear
Pulling force - internal/external diameter kN 75 75
Brake force kN 94 94
Wire rope medium speed m / s 0,60 (540 min-1) 0,60 (540 min-1)
Drum capacity length/diameter m / mm  90 / 13
105 / 12
90 / 13
105 / 12
Recommended min. tractor power kW / HP 60 / 80 60 / 80
Weight without wire rope kg 420 490
Clutch plates pcs 6 6
PTO shaft revolutions

min-1

750 750
Oil pressure

MPa

11 - max. 18 11 - max. 18
Oil quantity

I

9 9
Width
Depth
Height

mm
mm
mm

840
660
800
840
660
800
Unwinding device

pcs

/ Standard 2
Smart 3in1   / Standard
Winch mounting plate   Standard Standard

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