Fixed Butt Reducer
Our butt reducing rotor combined with the debarker has become standard, especially among sawmills in Scandinavia, the Baltics, and Russia. Over the last 30 years, we have delivered more than 150 debarkers equipped with a butt reducing rotor. Due to the fixed setting of cutting knives, the VK butt reducer is mainly used in plants where logs are pre-sorted by diameter before debarking. Our fixed butt reducer is available with both VK5000HD and VK8000HD series debarker frames. Robust construction and simplicity of the system makes a VK reducer very reliable and easy to use.
Features
- Butt reducing rotor is installed in machine frame’s first rotor position before debarking
- Reducing tools are mounted on changeable reducing ring – separate change-over device is delivered to install and change RE-rings
- RE-rings available from dia 22 up to max 60 cm
Ring has either five or six cutting tools, maximum cut 10 cm/radius – total diameter reduction of max 20 cm
Feedroll pressure control – pressure level of feedrolls is automatically adjusted to higher level during reducing
- Feed speed control – speed is automatically slowed down when reducing large logs
- Hydraulic pull-out system of rotor for changing reducing ring and for maintenance
Benefits
- Butt reducing at debarking speed without log stoppage for maximum production output
- No need to kick log aside feeding line which minimizes maintenance costs and guarantees steady production
Quick tool adjustment – changing a reducing ring takes about five minutes
- Log feeding both thin- and thick-end first
- VK’s proven butt reducing technology ensures steady production through all seasons even with frozen logs
Hydraulic Debarking Rotors
| Rotor diameter | Biggest reducing ring | Max. log diameter before butt reducing |
|---|---|---|
| 480 mm | 450 mm | 650 mm |
| 620 mm | 550 mm | 750 mm |
| 820 mm | - | - |
Pneumatic Debarking Rotors
| Rotor diameter | Biggest reducing ring | Max. log diameter before butt reducing |
|---|---|---|
| 440 mm | 400 mm | 600 mm |
| 560 mm | 530 mm | 730 mm |
| 680 mm | 600 mm | 800 mm |
| 920 mm | - | - |
