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VK8000 Series (Heavy Duty)

VK8000 Heavy Duty

Following our well-known VK820 series, the VK8000 series is the latest and most robust debarker type we have developed. It has a number of improvements that make using and servicing the debarker easier than ever before. Compared to its smaller counterpart, the VK5000 series, the VK8000 series debarker uses larger diameter feedrolls; therefore, it is primarily designed for mills using medium and large size logs.

With our famous heavy-duty trim, debarkers are designed for large scale production with high speed debarking by using extra strong components as our standard, such as drive gears and drive shafts. Also, the feedroll pressure system is designed with the latest innovations of hydraulics and control systems used in the industry.

Our heavy-duty trim offers great flexibility to start the investment process with lower capital expenditure and boost up the debarker as needs grow. The first stage of investment can be a single rotor machine. The machine can be extended by adding a butt reducing rotor and/or a second debarking rotor when higher speeds or cleaner chips are needed. The debarker with a combination of two or three rotors is called a VK-Combi concept. The third rotor is always a butt reducer.


  • Fixed debarking rotor – centering of logs with infeed conveyor
  • Available with both hydraulic and pneumatic pressure systems for debarker tool arms
  • Hydraulic tool pressure: Three rotor sizes 62 cm, 80 cm (PLY), and 82 cm – always with six tool arms
  • Pneumatic tool pressure: Four rotor sizes 56 cm, 68 cm, 81 cm, and 92 cm – always with six tool arms
  • Feedroll size Ø86 cm
  • Standard 1-rotor debarker comes with six feedrolls – eight feedroll version available for short logs (SL-version)
  • Standard 2-rotor debarker comes with eight feedrolls – when necessary extra feedroll pairs can be added in the machine frame (10 or 12 rolls)
  • Hydraulic pressure system for feedrolls
  • VK infeed conveyor always as standard – heavy-duty trim with new generation conveyor design
  • Extra strong components used in feedworks
  • Automatic grease lubrication system as standard


  • Heavy-duty machine frame – modular construction allows step-by-step investment

  • Hydraulic pull-out system of debarking rotor for easy maintenance
  • Pneumatic tool pressure: air seal construction enables remote control of debarking tool pressure and automatic tool arm opening if feeding stops
  • Pneumatic tool pressure: extra wide tool tips available which allows higher feed speed
  • Different tool tip versions available ensuring optimal debarking quality in varying conditions
  • FibreMax feedrolls for easy maintenance – different insert types available ensuring grip in varying conditions

  • Active hydraulic pressure system allows feedrolls’ soft opening and prestaging for minimal fiber loss in debarking
  • Centering VK infeed conveyor guides logs smoothly between feedrolls for minimal fiber loss in debarking

1-Rotor Machines with Hydraulic Tool Pressure

Debarking diameter (mm) 100 - 620 100 - 620 100 - 800 100 - 800
Min. log length (m) 2.7 2.2 2.7 2.2
Weight (kg) 34,600 38,700 34,800 38,900
Motor: rotor (kW) 90 90 90 90
Motor: feedworks (kW) 3x22 3x22 3x22 3x22

1-Rotor Machines with Pneumatic Tool Pressure

Debarking diameter (mm) 100 - 560 100 - 560 100 - 680 100 - 680
Min. log length (m) 2.7 2.3 2.7 2.3
Weight (kg) 35,400 39,500 35,600 39,700
Motor: rotor (kW) 75 75 90 90
Motor: feedworks (kW) 3x22 3x22 3x22 3x22
Debarking diameter (mm) 100 - 800 100 - 800 100 - 900 100 - 900
Min. log length (m) 2.7 2.3 2.8 2.3
Weight (kg) 36,500 40,600 36,400 40,500
Motor: rotor (kW) 90 90 90 90
Motor: feedworks (kW) 3x22 3x22 3x22 3x22

For technical details of Valon Kone Combi debarkers, please contact VK sales.

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