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VK5000 Series (Heavy Duty)

VK5000 Heavy Duty

Following our well-known VK550 series, the VK5000 series is our latest debarker type. It has a number of improvements that makes using and servicing the debarker easier than ever before. Compared to its bigger counterpart, the VK8000 series, the VK5000 series debarker uses smaller diameter feedrolls, and is therefore primarily designed for mills using small and medium 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 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: Two rotor sizes 48 cm and 62 cm – always with six debarking tool arms
  • Pneumatic tool pressure: Three rotor sizes 44 cm, 56 cm and 68 cm – always with six debarking tool arms
  • Feedroll size Ø58 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 – 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 – 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) 80 - 480 80 - 480 100 - 560 100 - 560
Min. log length (m) 2.2 1.8 2.2 1.8
Weight (kg) 25,100 27,900 25,200 28,100
Motor: rotor (kW) 75 75 75 75
Motor: feedworks (kW) 3x22 3x22 3x22 3x22

1-Rotor Machines with Pneumatic Tool Pressure

Debarking diameter (mm) 80 - 440 80 - 440 80 - 560 80 - 560
Min. log length (m) 2.2 1.8 2.3 1.9
Weight (kg) 25,500 28,300 26,800 29,600
Motor: rotor (kW) 75 75 75 75
Motor: feedworks (kW) 3x22 3x22 3x22 3x22
Debarking diameter (mm) 100 - 680 100 - 680
Min. log length (m) 2.3 1.9
Weight (kg) 30,200 33,000
Motor: rotor (kW) 90 90
Motor: feedworks (kW) 3x22 3x22

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

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