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Vegetation & site preparation

Stump grinders

A specialised removal business, not conventional logging — and never quote it by visible diameter.

5 benchmark machines7 buying criteria3 buying traps

Stump grinding is a specialised removal business rather than conventional logging. A high-speed cutter wheel reduces the stump to chips, leaving the root mass in place below the cut depth.

The term "stump grinder" actually covers several different technologies: horizontal cutter wheel, vertical disc cutter, screw planer, auger grinder, forestry tiller and stump shear. They produce different site outcomes and suit different commercial models.

What it does

  • Positions over or beside the stump
  • Reduces the stump to chips with a high-speed cutter wheel
  • Works to a specified depth below ground
  • Leaves a chip-filled void requiring backfill or removal

Who profitably buys one

  • Arboriculture contractors
  • Commercial development and civil contractors
  • Road and utility contractors
  • Councils and parks operations
  • Landscaping businesses
  • Plantation road and infrastructure crews

Market context

The stump grinders market in Australia

Stump grinding is a removal business rather than a logging one. The unit of production is the stump, the customers are largely arboriculture, development, council and utility, and the work is won and lost on quoting accuracy rather than machine capability.

The category label covers several genuinely different technologies — horizontal cutter wheel, vertical disc cutter, screw planer, auger grinder, forestry tiller and stump shear — which produce quite different site outcomes. Choosing between them is a question about the required result, not about machine size.

Slow-speed planers occupy a useful niche in Australian urban work: where high-speed chip projection near glazing, traffic, livestock or pedestrians is unacceptable, a planer achieves the outcome without the projection risk.

Published specifications

Benchmark machines in the Australian market

Indicative published manufacturer and distributor figures. Confirm every specification, lift chart and hydraulic requirement with the manufacturer or authorised dealer before purchase.

An upper-commercial arboriculture stump cutter rather than an industrial plantation stump-removal system.

Weight~1,769 kg
Engine67 hp / 50 kW diesel
Cutter wheel584 mm
Teeth30
Stated maximum fuel consumption~13.6 L/h

Positioned by Vermeer for contractors regularly handling larger or multiple stumps.

Machine weight~2,023 kg
Engine115 hp / 85.8 kW
Cutter wheel660 mm
Teeth33
Above-ground cut~787 mm
Below-ground cut~635 mm

FAE Stump cutter range

Brand profile →

FAE's Australian stump cutter catalogue spans small excavators through to specialist carriers, with the largest working to approximately one metre depth.

SCL/HY4-7.5 t excavator
SCL/EX7-15 t excavator
SCM/EX14-24 t excavator
SCL/SSL75-120 hp skid steer
SCH160-280 hp tractor
SCH/GT180-350 hp tractor
300/SC/PM250-300 hp specialist carrier · works to ~1 m depth

OMEF SPV2 Plus 510 stump planer

Brand profile →

A slow-speed stump planer for small excavators — attractive where high-speed chip projection is undesirable.

Excavator class5.5-8 t
Weight285 kg
Stated maximum stump diameter~1,000 mm
Torque6,440 Nm
Flow60-75 L/min

OMEF SPV3 Plus stump planer

Brand profile →

The larger OMEF slow-speed planer for mid-size excavators.

Excavator class14-25 t
Weight770 kg
Stated maximum stump diameter~2,000 mm
Torque20,000 Nm
Flow150-200 L/min

Model pages

Specific machines in this class

Full published specifications, commercial fit, and what to verify before signing — for each machine.

Side by side

Comparison

Commercial stump-system comparison
ObjectiveGrinderPlanerStump shearForestry tiller
Urban finishExcellentGoodPoorPoor
Minimise excavationExcellentExcellentPoorFair
Remove root massPoorPartialExcellentProcesses in place
Biomass recoveryPoorPoorExcellentPoor
Plantation conversionFairFairExcellentExcellent
High stump densityModerateModerateHighVery high
Individual isolated stumpExcellentGoodOverkillOverkill

Measurement

How this machine should be judged

These are the numbers that determine whether the purchase works. Specification sheets rarely contain any of them.

Minutes per stump
The unit of production in this business.
Teeth consumed per 100 stumps
Directly comparable across jobs and the clearest wear signal.
Fuel per stump
Normalises across machine sizes.
Setup and mobilisation time
On scattered urban jobs this frequently exceeds cutting time.
Chip-removal time
Often quoted as included and rarely costed properly.

Before you request quotes

Buying criteria

Assemble every one of these before contacting a supplier. Any line you cannot answer is where your commercial risk sits.

  • Typical stump diameter, root flare and required depth
  • Species hardness in your market — eucalyptus is a different job from pine
  • Access constraints: gates, slopes, kerbs, soft ground
  • Tooth and pocket cost, and how many stumps a set does
  • Whether chip removal is part of your scope
  • Transport arrangement for scattered urban work
  • High-speed grinder versus slow-speed planer for chip projection and noise

What goes wrong

Buying traps

Each of these is a documented pattern, not a hypothetical.

Ownership

Consumables and wear items

Cost drivers

  • Teeth and pockets
  • Cutter bearings
  • Belts and drive components
  • Transport and mobilisation on scattered jobs
  • Chip disposal

Price these before signing

  • Teeth
  • Pockets
  • Cutter bearings
  • Belts

Obtain consumable prices at quotation stage and model annual expenditure. Use the dealer quote checklist.

What it actually costs

Cost structure and the variables that move it

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.

Teeth and pockets are the recurring cost, and soil contamination rather than timber drives them. Gravel, rock and buried debris destroy teeth far faster than wood does.

On scattered urban work, setup and mobilisation frequently exceed cutting time. A quote built only on cutting minutes will lose money on a spread-out day.

Cost drivers, their effect, and what you can do about them
Cost driverEffect on your economicsHow to control it
Soil contaminationGravel, rock and buried debris are the main destroyer of teeth and pockets.Track teeth consumed per 100 stumps — the metric that exposes contamination.
Root flare and required depthVisible diameter understates the work. Flare and depth specification drive actual time per stump.Quote on flare and depth, never on visible stump diameter.
Species hardnessA 700 mm eucalyptus stump can take longer than a much larger softwood stump in clean soil.Price by species as well as size in your rate card.
Access and setupGates, slopes, kerbs and soft ground add time that is invisible in a per-stump rate.Inspect access before quoting, and charge mobilisation separately on scattered work.
Chip removalFrequently assumed to be included and rarely costed properly.State explicitly whether removal is in scope, and price it if so.

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.

Worked situations

Three buyers, three different right answers

The same machine class suits very different businesses in very different configurations. These are the situations that recur.

1

Urban arboriculture contractor

The situation
Scattered residential and council stumps, tight access, finish quality expected, several sites a day.
What usually works
A compact tracked machine that fits standard gates. Access capability outweighs raw cutting power because setup and travel dominate the day.
The trade-off
Larger or multiple stumps take longer than a heavier machine would need.
Ask the supplier
What gate width does this machine pass, and what is realistic setup time per site?
2

Development and civil site clearance

The situation
A construction site with many stumps and a specified depth below finished level.
What usually works
A larger machine with sufficient below-ground cut for the depth specification, or an excavator-mounted cutter where stumps are numerous and access is open.
The trade-off
Depth specification and chip volume both rise, and backfill may become part of the scope.
Ask the supplier
What below-ground depth does the specification require, and who is responsible for backfill?
3

Plantation conversion at scale

The situation
Whole-area conversion with high stump density ahead of replanting.
What usually works
This is usually the wrong technology. A stump shear that removes the root mass, or a forestry tiller that processes it in place, will beat grinding on both cost per stump and site outcome.
The trade-off
Shearing and tilling disturb far more soil, and rehabilitation may be required.
Ask the supplier
Does the root mass need to be removed, or only reduced below ground level?

Local conditions

Australian considerations

Specification sheets are written for global markets. These are the factors that change the answer here.

Eucalyptus stumps are hard work

Species hardness materially affects time per stump. A 700 mm eucalyptus stump surrounded by rocks may take longer than a much larger softwood stump in clean soil, which is why a single per-diameter rate card underquotes hardwood work.

Chip projection near assets

High-speed grinding throws chip. Near glazing, traffic, livestock or pedestrians, slow-speed planers achieve the outcome without the projection, and that capability can be the difference between winning and losing urban contracts.

Access is the Australian urban constraint

Standard residential gate widths, side-access slopes and soft lawns decide which machine can actually reach the stump. Machine capability is irrelevant if it cannot get to the work.

Warning signs

Red flags in the sales conversation

None of these are proof of a bad supplier. All of them are reasons to keep asking.

  • A rate card built on visible stump diameter with no allowance for flare or depth
  • Teeth and pocket costs not quoted
  • No below-ground cut figure stated against your depth specification
  • Chip removal assumed to be included without being priced
  • An industrial plantation machine offered for scattered urban work, or vice versa

Before you sign

Stump grinder buyer checklist

Any line you cannot answer is where your commercial risk sits. Take this to the supplier meeting.

  • Typical stump diameter, root flare and required depth
  • Species hardness in your market
  • Access constraints: gate widths, slopes, kerbs, soft ground
  • Above-ground and below-ground cut against your specification
  • Tooth and pocket cost, and stumps achieved per set
  • Teeth consumed per 100 stumps in your soils
  • Whether chip removal is in scope, and its cost
  • Transport arrangement for scattered work
  • High-speed grinder versus slow-speed planer for projection and noise
  • Minutes per stump measured in your species, not quoted

For the full procurement sequence, see the commercial procurement checklist and what a dealer quote should include.

Common questions

Frequently asked questions

How much does stump grinding cost per stump?

It cannot be quoted from diameter alone. Cost is driven by stump diameter multiplied through root flare, required depth, species hardness, access difficulty, soil contamination and cleanup requirement. A 700 mm eucalyptus stump surrounded by rocks may take longer than a much larger softwood stump in clean soil — which is why per-diameter rate cards consistently underquote hardwood and poor-access work.

How deep should a stump be ground?

It depends on what follows. Turf and landscaping typically need less depth than construction or re-planting, and development specifications often state a depth below finished level. Machines in the upper commercial class offer around 635 mm below ground; confirm the specification before selecting, because depth drives both time and chip volume.

Stump grinder or stump shear?

Grinding reduces the stump to chips and leaves the root mass in place, which suits urban finish work and sites where excavation must be minimised. Shearing penetrates, splits, loosens and extracts the whole stump, which suits large-scale land conversion and creates a biomass stream. Start from the required site outcome and stump density, not machine size.

What is the main running cost of a stump grinder?

Teeth and pockets, driven more by soil contamination than by timber. Gravel, rock and buried debris destroy teeth far faster than wood does. Teeth consumed per 100 stumps is the metric that exposes this, and most contractors do not record it.

Are slow-speed stump planers worth considering?

Yes, where chip projection is a problem. Near glazing, traffic, livestock or pedestrians, slow-speed planers achieve stump removal without high-speed projection. Units are available for carriers from roughly 5.5 tonnes upward, with substantial torque and moderate flow requirements.

Elsewhere on this site

Where this class comes up

The comparisons, buyer profiles and fleet packages that turn on this machine.

See also

Related machine classes