specialized power equipment used to remove tree stumps by grinding away the solid wood. May be towed or self-propelled. Stump machine. Stumper.

stump grinder (Wikipedia)
Backhoe stump grinder attachment, showing carbide teeth and chips
Rotor vertical stump grinder at work.

A stump grinder or stump cutter is a power tool or equipment attachment that removes tree stumps by means of a rotating cutting disc that chips away the wood.

Stump grinders can be the size of a lawn mower or as large as truck. Most accomplish their task by means of a high-speed disk with teeth that grinds the stump and roots into small chips.

A typical stump grinder incorporates a cutter wheel with fixed carbide teeth. The cutter wheel movements are controlled by hydraulic cylinders to push the cutter head laterally through the stump and to raise and lower it.

Stump grinding is generally performed by a qualified arborist or landscaper, however it is possible to rent them from tool hire companies for DIY projects.

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