What log diameters can a firewood processor process?

The maximum log diameter a firewood processor can process depends on the machine model, splitting force, hydraulic performance, wood species and the condition of the log.

Log diameter by BTD model

  • PROcompact: approximately 15–40 cm
  • PROcompact-S: approximately 15–40 cm
  • PROplus: approximately 17–45 cm

The maximum diameter is therefore not the same for every firewood processor. The correct machine should be selected according to the log dimensions and the required production capacity.

What determines the maximum log diameter?

  • Splitting force: larger and more difficult logs require more splitting force.
  • Hydraulic performance: sufficient oil flow and working pressure are essential for consistent machine performance.
  • Splitting knife: the selected knife configuration affects how much resistance occurs during splitting.
  • Wood species: hardwood can require more splitting force than softer wood species.
  • Log shape: crooked, forked or heavily knotty logs can be more difficult to process than straight logs.

Does a larger diameter always reduce productivity?

Larger logs can require more time for positioning, sawing and splitting. The actual processing speed also depends on wood species, knotting, cutting length, splitting knife and the organisation of log feeding and discharge.

A straight log with a larger diameter can in practice sometimes be easier to process than a smaller but heavily crooked or knotty log.

Why is the correct splitting knife important?

The splitting knife determines how the cut section is divided. Depending on the BTD model, 4-, 6-, 8- and 12-way splitting knife options are available.

The correct knife configuration helps match the firewood size to the log diameter and available splitting force.

Conclusion

The BTD PROcompact and PROcompact-S process logs with a diameter of approximately 15–40 cm. The PROplus is designed for larger logs and processes approximately 17–45 cm.

Wood species, knotting, log shape, splitting knife and available hydraulic capacity also influence practical processing performance.

Discover our professional firewood processors.

Related Links

How much splitting force is required for a firewood processor?

How do splitting knives work and what are your options with a BTD firewood processor?

Which wood species are suitable for a firewood processor?