Log splitter for excavators: the cone splitter as an attachment
A log splitter for an excavator is usually a cone splitter: an attachment whose hydraulic motor turns a threaded cone that screws into the log and forces it apart. BLACK SPLITTER manufactures nine models in Germany for excavators from 0.8 to 40 tonnes. This guide explains how they work and which model suits which machine.
How does a log splitter on an excavator work?
The cone splitter is connected to an auxiliary hydraulic circuit of the excavator. The hydraulic motor – on larger models via a planetary gearbox – turns the splitting cone. The threaded tip pulls the cone into the wood and the increasing diameter splits the log. Details on the page What is a cone splitter?.
Advantages of a cone splitter as an excavator attachment
- The excavator moves the attachment to the log – heavy wood does not have to be lifted by hand.
- It uses the hydraulics of a machine that is already on site.
- Models are available for mini excavators as well as for excavators up to 40 t.
- Versions with grab combine grabbing and splitting.
Which log splitter fits which excavator?
The figures are taken from the technical data on the product pages (without excavator mount, back plate and hydraulic hoses).
| Model | Excavator | Weight | Max. torque | Cone diameter |
|---|---|---|---|---|
| S1 | 0.8 – 6 t | 106 kg | 2338 Nm | 200 mm |
| S2 | 1 – 6 t | 119 – 128 kg | 2338 – 4020 Nm | 200 mm |
| SG1 with grab | 1.5 – 6 t | 166 – 178 kg | 2338 – 2475 Nm | 200 mm |
| SB with planetary gearbox | 3 – 12 t | 240 kg | 12,000 Nm | 300 mm |
| SG3 with grab | 3.5 – 8 t | 400 kg | 2475 Nm | 245 mm |
| S2X | 6 – 10 t | 152 – 161 kg | 2338 – 4020 Nm | 245 mm |
| S1X | 6 – 18 t | 208 kg | 4020 Nm | 245 mm |
| SBX with planetary gearbox | 12 – 28 t | 620 kg | 30,000 Nm | 400 mm |
| SBXX with planetary gearbox | 25 – 40 t | 890 kg | 60,000 Nm | 400 mm |
Compact, with planetary gearbox or with grab?
Compact log splitters for mini excavators
The S1 and S2 are designed for small carrier machines from 0.8 t and 1 t respectively. More in the guide cone splitter for mini excavators.
Planetary gearbox for tough wood and large logs
The SB, SBX and SBXX use a planetary gearbox and reach 12,000, 30,000 and 60,000 Nm.
Log splitters with grab
The SG1 and SG3 combine cone splitter and grab. The SG3 can also rotate through 360°.
What matters for mounting
Besides the operating weight, the hydraulics (pressure, oil flow, number of auxiliary circuits) and the mount on the quick coupler or dipper arm are decisive. Suitable mounts and adapters are available. For a recommendation, send us the details of your machine via the contact page. The guide Which cone splitter suits your excavator? leads through the selection.
Frequently asked questions about log splitters for excavators
From what excavator size is a log splitter available?
According to the technical data, the range starts at 0.8 t with the S1 and goes up to 40 t with the SBXX.
What is the difference between a log splitter and a cone splitter?
A cone splitter is a type of log splitter. Instead of pushing the wood against a wedge with a cylinder, it screws a threaded cone into the log. Mounted on an excavator, it is moved to the wood.
Do I need a grab?
A grab is useful if logs are to be picked up, positioned and put down by the excavator. For splitting wood that is already in place, a cone splitter without grab is sufficient.
Is this guide an operating manual?
No. This text supports product selection. For mounting, operation, maintenance and safe working, the documents and specifications for the specific attachment and carrier machine apply.