What is a lawn mower and brush cutter?

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What is a lawn mower and brush cutter?

Oct 31, 2025

The lawnmower brush cutter is a special blade specially designed to cut and clean rough, lignified vegetation (such as shrubs, saplings, vines, reeds and high-density weeds).
Below I will explain it in detail from multiple dimensions, and focus on comparing it with the previously mentioned knife throwing.
Core design goals and features
HIGH STRENGTH AND HEAVY WEIGHT: Brush cutters are typically thicker, heavier, and sturdier than regular lawn mowing blades. This gives it the inertia and impact force powerful enough to split woody stems rather than just sever them.
Special edge design:
Multi-tooth design: Common ones include 3 teeth, 4 teeth, 8 teeth or even more. The tips of the teeth are sharp and used to cut into and tear fibers.
Thick Blade Body: Each "teeth" is like a thick dart or sickle head to ensure structural integrity under high-speed rotation.
Working principle: It is also installed on the drive plate of a lawn mower or brush cutter and rotates at high speed, using the impact, chopping and tearing effects of the blade teeth to destroy vegetation.
Main types
Three-tooth/four-tooth brush cutter (multifunctional type):
Common, balancing cutting efficiency and strength.
Suitable for dealing with mixed vegetation, such as weeds mixed with small shrubs.
The knife teeth have a certain angle and have the functions of cutting and throwing materials.
Eight-tooth (or multi-tooth) brush cutter (fine cleaning type):
With more teeth, the number of cuts per unit time increases, and the cutting effect is finer and more thorough for high-density weeds, vines, reeds, etc.
Because there are many teeth, each tooth is relatively small, and its ability to deal with extremely thick tree trunks is slightly weaker than that of a knife with fewer teeth.
Heavy-duty land reclamation knife/blade:
The shape is more like a straight shovel or large blade, and the edge is sometimes serrated.
Designed to handle harsh environments such as cleared wasteland, dense brush and small trees.
The heaviest weight and the strongest impact.
Application scenarios
Reclamation of woodland and wasteland: clearing shrubs and miscellaneous trees in secondary forests and wasteland.
Landscaping maintenance: Clear invasive shrubs and brambles from levees, hillsides, and campus edges.
Agricultural boundary clearing: clearing tall weeds and shrubs along field edges and ditches.
Road maintenance: Maintain vegetation on slopes along roads and railways.
Fire exit creation: Establish and maintain fire isolation zones.