A grapple saw is commercially different from a tree shear. The machine grips the tree or branch before or during cutting, then keeps control of the severed section rather than dropping it.
That control is the entire commercial proposition. It is valuable around buildings, roads, utilities, railway corridors, waterways and sensitive assets — precisely the situations where an uncontrolled drop is unacceptable and where conventional climbing arboriculture is slow and expensive.
A grapple saw exists for one reason: control of the severed section. Around buildings, roads, live utilities, rail corridors and waterways, an uncontrolled drop is unacceptable, and conventional climbing arboriculture is slow and expensive by comparison.
The Australian market for this class sits mostly with utility vegetation contractors, rail and road corridor operators, councils and large commercial arboriculture businesses. Work is sold as completed removals rather than tonnes per hour, which changes every specification priority.
The category's defining commercial trap is universal and worth stating plainly: cutting diameter and allowable piece weight are unrelated specifications. GMT itself emphasises that the weight of the severed section must be evaluated against the crane or carrier's lifting capacity.
Indicative published manufacturer and distributor figures. Confirm every specification, lift chart and hydraulic requirement with the manufacturer or authorised dealer before purchase.
A compact grapple saw for 5-8 tonne excavators, distributed in Australia by Randalls.
| Excavator class | 5-8 t |
|---|---|
| Weight | 390 kg |
| Maximum trunk hold | 950 mm |
| Maximum workload | 1,500 kg |
| Maximum cut diameter | 400 mm |
| Hydraulic flow | 30-60 L/min |
| Rotation | 360-degree control |
The compact end of the GMT grapple saw range.
| Weight | ~275 kg |
|---|---|
| Grapple opening | 850 mm |
| Single-cut capacity | 400 mm |
A larger grapple saw with double-cut capability for bigger sections.
| Weight | ~420 kg |
|---|---|
| Grapple opening | 1,220 mm |
| Single-cut capacity | 550 mm |
| Double-cut capacity | 800 mm |
| Maximum grapple load | 2,500 kg |
| Recommended flow | 45-65 L/min |
Adds a Total Tree Control braking system for managed lowering of severed sections.
| Weight | ~555 kg |
|---|---|
| Feature | Total Tree Control braking system |
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.
Grapple saw economics are dominated by carrier capability and mobilisation, not by the attachment. The head is a modest capital item; the constraint is what the boom can lift at the radius the job requires.
On scattered urban work, setup and travel between jobs frequently exceeds cutting time. A machine that can be moved easily and set up quickly often out-earns one that is more productive once in position.
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.
Turns an ordinary excavator into a controlled tree-cutting machine — the fastest-growing attachment category.
Geometry beats size — the grapple should be selected according to material flow.
Turns an existing excavator into a dedicated pruning platform — no second carrier required.
Excavator or purpose-built machine — the biggest single commercial buying decision.