The short answer
They solve opposite problems. Buy a grinder when the stump has to disappear in place and you cannot leave spoil. Buy a cutter when you are already extracting stumps and the cost you are fighting is transport and processing volume. Most buyers who ask this question want a grinder.
Stump grinder
Destroys the stump and root plate below grade, in the ground
Choose it when
- The stump must be gone and the ground reinstated
- You are working urban sites where spoil cannot be left or carted
- Stump counts are high and you are pricing per stump
- Carrier is between 1.5 and 30 tonnes
Stump cutter
Splits and sizes a stump that has already been extracted
Choose it when
- Stumps are being pulled anyway as part of clearing
- Disposal volume, not removal, is the cost you are fighting
- Material is going to biomass or chip and needs sizing first
- Carrier is between 11.5 and 28 tonnes
Side by side
| Criterion | Stump grinder | Stump cutter |
|---|---|---|
| Where it works | In the ground, on the stump in place | On the surface, after extraction |
| What it leaves | Coarse chip, no spoil heap, no stump to move | Split stump sections plus the original excavation spoil |
| Carrier range | 1.5–30 t | 11.5–28 t |
| Circuit | Hammer line plus case drain | Hammer line plus case drain |
| Urban and near-asset work | Strong — nothing to cart away | Weak — you still have to extract first |
| Biomass and chip supply | Produces chip directly, but fines and soil contamination | Produces clean, sized material for processing |
| Dominant running cost | Teeth and tips, heavily ground-condition dependent | Blade and jaw rebuild, periodic rather than constant |
| The metric that matters | Cost per stump | Cost per tonne processed |
Shaded cell is the stronger side on that criterion
What they cost to own and run
| Cost driver | Stump grinder | Stump cutter |
|---|---|---|
| Dominant wear item | Teeth and tips, a monthly budget line in abrasive or stony ground | Blade and jaw rebuild, periodic rather than constant |
| What accelerates wear | Sandy or stony soil, buried metal, urban fill | Oversize material and embedded stone |
| Carrier load | Continuous — pumps, coolers and final drives feel it | Intermittent, closer to normal excavator duty |
| Disposal cost | None. The stump is destroyed in place and what is left is chip | Real. You are still carting the extracted stump, just in smaller pieces |
| The metric to price on | Cost per stump | Cost per tonne processed |
No purchase prices appear here, because attachment pricing moves with the exchange rate, the model inside a range, rotation options and the carrier bracket. What moves the number is covered on the attachment costs page, and the utilisation question that decides whether to own either tool is on hire versus buy.
Three situations, three answers
Residential removals, 300 to 600 stumps a year, sites where nothing can be left behind and access is tight.
Grinder, without hesitation. The commercial argument is that nothing is carted away, which on urban sites is most of the job cost. Work the numbers on cost per stump rather than purchase price, because at this volume the teeth bill decides the outcome.
Broadacre clearing packages where stumps are being pulled with the excavator anyway and the spoil heap is the problem.
Cutter, and the metric is cost per tonne processed. You are not trying to remove stumps — they are already out. You are trying to reduce the volume you cart or chip, and a cutter does that on the surface without the wear rates grinding incurs.
Both kinds of work, roughly evenly split, with two machines available.
Both, eventually, and the grinder first. Grinding is the harder capability to subcontract at short notice, and it is the one that wins urban and near-asset work. Add the cutter when the volume of extracted stumps becomes a standing cost rather than an occasional one.
When the answer is both
Land clearing contractors running volume often end up with both: the grinder for finished sites and anything near assets, the cutter sitting on the second machine at the stockpile, sizing what the excavator pulls.
How buyers get this choice wrong
Buying a cutter expecting it to remove stumps
It cannot. A cutter works on stumps that are already out of the ground. This is the single most common category error in the Australian market.
Pricing a grinder on purchase price
At volume, teeth cost and teeth life dominate. A cheaper grinder with shorter tooth life is the more expensive machine.
Ignoring the case drain on either tool
Both run piston motors that generally need drainage back to tank. Skipping it kills motor seals, often inside a season, and it is rarely a warranty claim.
Forgetting buried metal in urban fill
Old fencing, reo and services destroy teeth and can void warranty. Ask what happens to the warranty when you hit metal before you buy.
Before you decide
Decision checklist
- Whether the stump must disappear in place or is being extracted
- Annual stump count, from last year's records
- Soil type, and whether it is abrasive
- Whether spoil can be left on site
- Tooth or blade cost and expected life in your ground
- Wear-part lead time in Australia
- Carrier auxiliary flow and whether a case drain is fitted
- What the warranty says about buried metal
Questions that follow
01Does a stump grinder leave anything to clean up?
Coarse chip, and that is the commercial argument for the category. There is no spoil heap and no stump to cart, which on urban and near-asset sites is most of the job cost. The chip does carry soil and fines, so it is not a clean biomass feedstock — that is what the cutter produces.
02What size excavator do I need for each?
Stump grinders span roughly 1.5 to 30 tonnes across their range, so almost any carrier has an option. Stump cutters are far narrower at 11.5 to 28 tonnes, which is the tightest carrier range of any category in this guide. If you have a mini excavator, the cutter is simply not available to you.
03Which is safer to operate near services?
Neither is inherently safe near buried services, and grinding is the one that finds them. Always confirm service locations before grinding, because buried metal destroys teeth and can void warranty, and striking live services is a serious incident rather than a maintenance one.
04Can a stump cutter remove a stump from the ground?
No. A cutter works on a stump that is already out. Removal in place requires a grinder, or an excavator and a lot of digging.
05Do I need both if I already have a grinder?
Usually not. Buy a cutter when disposal volume is your cost, and a grinder when stump removal in place is your scope.
06Which is cheaper to run?
It depends entirely on ground. Grinder teeth in stony or sandy soil are a monthly line item; cutter blades are a periodic rebuild. Compare on cost per stump and cost per tonne rather than on purchase price.