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((refimprove|date= February 2017))

[[File:Vertical stump grinder at work..jpg|thumb|Vertical stump grinder at work.]]

A stump grinder is a machine used to grind [[tree stump]]s. They can be the size of a [[lawn mower]] or as large as a [[truck]].  Most accomplish their task by means of a high-speed disk with teeth that grinds the stump and [[root]]s into small [[woodchips|chips]]. 

A typical stump grinder incorporates a cutter wheel with fixed [[Tungsten carbide|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 done with the use of a very powerful, heavy, and potentially dangerous machine. Stump grinding is generally performed by a qualified arborist or landscaper. It is possible to rent a stump grinder from tool hire companies for DIY projects. 

If choosing to stump grind yourself, there are some safety rules that should be adhered to:<ref>((cite web|url=https://actiontreeservice.ca/all-about-stump-grinding|title=Stump Grinding Safety (1)|publisher=Action Tree Service))</ref>

* Read and follow all instructions provided with the stump grinder rental or purchase. Stump grinding can literally become a life or death situation if done incorrectly, so this is important to the safety of all involved.
* Wear your protection- hard hat, safety goggles, earplugs, gloves, work boots, long sleeves, and pants, avoiding loose clothing, remove jewelry, and tie long hair back.
* Remove anything that you can see may become a projectile from around the work area such as small rocks
* Check with utility companies for possible underground pipes or wires.
* Set up a boundary around your work area for the safety and security of others.
* Stump grinding can be incredibly satisfying. Assuming the user is strong enough to handle the machine and all rules are followed, do it yourself stump grinding is a viable working option.
There are a lot of risks in grinding your own stump if you've never operated that type of machine before such as broken windows, grinding through important lines in the ground, etc so be sure to proceed with caution.

Often if you hire someone to grind your stump they can call the city to have your lines marked, when necessary, and the right kind of professional can be in and out of your yard or property in under an hour *depending on the amount of stumps.

==Vertical stump grinder==
A '''stump grinder''' or '''stump cutter''' is a [[power tool]] or equipment attachment that removes [[tree stump]]s by means of a rotating cutting disc that chips away the [[wood]].

Machines are available in various models and versions, to cover a power range from 70 to 300 Hp.

There are also types of stump grinders that are applied to [[tractor]]s, [[excavator]]s, [[skid steer]]s and other earth moving and construction equipment. These machines can completely remove the roots of the trees or recover the central part of the roots. 

Vertical stump grinders are usually used in forests, for plant biomass, for the forestry sector, and for the maintenance of green areas, etc. They can destroy an entire root of ((convert|50|cm|abbr=on)) in diameter to more than one meter deep in 30 seconds. Studies have shown that the normal stump grinder (with disc and teeth) can eliminate most of the first ((convert|20|-|25|cm|in|0)) of stumps. Vertical stump grinder can completely destroy tree stumps of up to ((convert|150|cm|abbr=on)) in diameter permanently.<ref>[https://www.tslanbao.net/ Diamond Grinding Wheel | Resin Grinding Wheel]</ref>

They are made up of a sturdy gear box from which a transmission shaft emerges to which the cutting edges are connected.
Vertical grinders can remove the stump to a depth in the subsoil greater than one meter, while with normal horizontal grinders the stump is mostly shortened in the subsoil by 20 or 25 centimeters.

==References==
((Commons Category))
((Reflist))

((Forestry tools))
((DEFAULTSORT:Stump Grinder))

[[Category:Logging]]
[[Category:Grinding machines]]
[[Category:Forestry equipment]]

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