VFR - VARIABLE FLARE REDUCER

VK butt reducing solutions are the trusted choice of leading sawmills across Scandinavia, Finland, and the Baltic countries — setting the standard for efficiency, reliability, and superior quality.
Compared to the fixed VK butt reducing rotor, the new Variable Flare Reducer (VFR) features a unique and intelligent design that automatically adjusts and repositions the cutting tools for each individual log. This fast, precise adaptation enables efficient processing even when logs are unsorted by diameter.
By performing flare reduction in-line, VFR eliminates unnecessary production stops and ensures continuous log flow. The result is higher productivity, improved material efficiency, and smoother operation — all in one integrated solution.
Features
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Cutting tool positions are automatically adjusted for each individual log
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Hydraulically powered tool positioning mechanism
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Flare size, taper, and shape are measured before the log enters the debarker (via the light curtain in the VK infeed conveyor)
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Reducing speed is automatically controlled and adapts to the volume of material being removed
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Typically installed in the first rotor position of the machine frame, ahead of debarking — enabling a smaller debarking rotor size
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Can operate independently of the debarking function
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Available in three rotor sizes with maximum tool openings of 60 cm (24”), 65 cm (26”), and 78 cm (31”) — tool movement range up to 40 cm (16”)
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Equipped with six cutting tools
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Hydraulic pull-out system for service positioning
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Capable of feeding logs either thin-end or thick- end first
Benefits
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No log diameter sorting required prior to reducing
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Easy operation with fully automatic tool positioning
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Unlike fixed butt reducing rotors, no separate device is required to change settings or replace the reducing ring
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Quick tool adjustment minimizes log gaps
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Reducing is performed primarily at debarking speed without stopping the log — maximizing production output (unlike conventional cutter head reducers)
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No need to remove logs from the infeed line for reducing, simplifying line planning and improving log flow (unlike conventional cutter head reducers)
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Ensures stable production in all seasons, including when processing frozen logs
technical data
| Rotor size | VFR 600 | VFR 650 | VFR 780 | |
|---|---|---|---|---|
| Number of cutting tools | 6 | 6 | 6 | |
| Tool opening, min./max. | 20-60 cm (8-24") | 25-65 cm (10-26") | 38-78 cm (15-31") | |
| Max. cutting/radius | 10 cm (4") | 10 cm (4") | 10 cm (4") | |
| Max. log diameter before reducing | 80 cm (32") | 85 cm (34") | 98 cm (39") | |
| Max. reducing length | Not limited (speed reduction for >1m (40’’)) |
Not limited (speed reduction for >1m (40’’)) |
Not limited (speed reduction for >1m (40’’)) |