The splitting knife determines how the cut section of a log is divided and how efficiently the available splitting force is used. Depending on the BTD model, different splitting knife configurations are available for different log diameters, wood species and desired firewood sizes.
After the log has been cut to the selected length, the splitting cylinder pushes the section through the splitting knife. The knife divides the wood into several pieces.
The more sections the knife creates, the smaller the resulting firewood pieces become. At the same time, more resistance can occur during splitting, especially with larger, harder or heavily knotty logs.
The design of the splitting knife therefore has an important influence on how efficiently the available splitting force is used.
| Knife type | Typical result | Application |
| 4-way | 4 larger pieces | Suitable when larger firewood pieces are required or when additional splitting force per section is desirable |
| 6-way | 6 pieces | General-purpose configuration and standard on PROcompact and PROplus |
| 8-way | 8 smaller pieces | Suitable when smaller and more uniform firewood pieces are required; standard on PROcompact-S |
| 12-way ring knife | 12 smaller pieces | Available for PROplus for suitable logs and applications where smaller firewood pieces are required |
The best knife depends on several factors:
A 4-way knife generally produces larger pieces and places less resistance on the splitting process. An 8- or 12-way knife produces smaller pieces but can require more splitting force, particularly with large or difficult logs.
Yes. Depending on the BTD model, different splitting knives can be fitted to adapt the machine to the wood being processed and the required firewood size.
Knife changes must always be carried out safely and in accordance with the operating instructions, with the hydraulic system depressurised and the machine secured against unintended movement.
No. The 12-way ring knife is intended for suitable logs and applications where relatively small firewood pieces are required. Log diameter, wood species, knotting and available splitting force all influence whether this knife is the best choice.
The correct splitting knife helps match the firewood size to the log diameter, wood species and available splitting force. BTD offers 4-, 6-, 8- and 12-way configurations depending on the model.
The PROcompact is supplied with a 6-way knife as standard, the PROcompact-S with an 8-way knife and the PROplus with a 6-way knife.