Forestry tillers operate below the soil surface. They destroy root systems, incorporate stumps, break compacted ground, prepare planting sites, reclaim plantations and mix woody residue into soil.
They should not be confused with ordinary agricultural rotary hoes. A forestry tiller is built to process woody material and rock at depth, and the gearboxes, rotors and tooling reflect that.
Forestry tillers work below the soil surface, destroying root systems, incorporating stumps, breaking harvesting compaction and preparing plantable ground. They are not agricultural rotary hoes, and the gearboxes, rotors and tooling reflect that.
In Australian plantation re-establishment they usually form part of a sequence rather than an alternative: stump treatment, then slash treatment, then tillage or mounding, then planting. Western Australia's continuing softwood establishment programme — around 4,800 hectares of new softwood plantation in 2024-25, the largest state contribution that year — supports genuine demand for this class.
Multifunction machines combining mulching, tilling and rock crushing exist for reclamation work where a site contains standing vegetation, stumps, roots and rock together and buying three machines makes no sense.
Indicative published manufacturer and distributor figures. Confirm every specification, lift chart and hydraulic requirement with the manufacturer or authorised dealer before purchase.
The current Australian FAE forestry tiller classes, by tractor power, woody material capacity and working depth.
| SSL | 100-220 hp · ~300 mm material · ~300 mm depth |
|---|---|
| SSM | 170-300 hp · ~500 mm material · ~400 mm depth |
| SSH | 160-500 hp · ~700 mm material · ~500 mm depth |
| 200/S/PM | 250-300 hp · ~300 mm material · ~300 mm depth |
| 300/S/PM | 250-400 hp · ~500 mm material · ~400 mm depth |
Combines mulcher, tiller and rock crusher in a 160-300 hp tractor attachment — attractive to reclamation contractors where finish quality matters more than maximum forestry production.
| Tractor power | 160-300 hp |
|---|---|
| Maximum trees | ~350 mm |
| Maximum stumps | ~450 mm |
| Maximum stone | ~200 mm |
| Functions | Mulcher + tiller + rock crusher |
Full published specifications, commercial fit, and what to verify before signing — for each machine.
These are the numbers that determine whether the purchase works. Specification sheets rarely contain any of them.
Assemble every one of these before contacting a supplier. Any line you cannot answer is where your commercial risk sits.
Each of these is a documented pattern, not a hypothetical.
Obtain consumable prices at quotation stage and model annual expenditure. Use the dealer quote checklist.
Purchase price is the smallest part of most forestry equipment decisions. These are the variables that decide what the machine costs per unit of saleable production.
Tiller economics are governed by hectares per day inside the establishment window, and by rock. PTO horsepower, working depth, travel speed and number of passes form a single system — under-power any element and depth is not achieved, which means a second pass or a failed specification.
Rock content dominates tooth wear and gearbox loading, and is the variable most often under-assessed at survey.
Model these against your own contracted hours rather than accepting a generic hourly rate — the machine cost calculator works the arithmetic with your figures, and the bottleneck analyser shows whether the machine is the constraint at all.
The same machine class suits very different businesses in very different configurations. These are the situations that recur.
Specification sheets are written for global markets. These are the factors that change the answer here.
None of these are proof of a bad supplier. All of them are reasons to keep asking.
Any line you cannot answer is where your commercial risk sits. Take this to the supplier meeting.
The comparisons, buyer profiles and fleet packages that turn on this machine.
The strongest crossover market in Australian forestry — plantations, councils, utilities, mining, solar and fire.
Does not grind the stump — it penetrates, splits, loosens, extracts and handles it.
A specialised removal business, not conventional logging — and never quote it by visible diameter.