What is a lawn mower rotary blade?

The lawn mower rotary blade is the core component of the rotary blade lawn trimmer, consisting of high-speed rotating blades, used for cutting lawn vegetation. Its working principle is to generate cutting force through the high-speed rotation of the blade (usually exceeding 3000 revolutions per minute), cutting the grass plant in an unsupported state.  ‌

structural characteristics
The rotary blade is generally a long strip of alloy steel blade with a blade angle of 30 °, which is directly installed on the engine output shaft or connected to the engine through a transmission device. Some models enhance the cutting effect through a mixed flow fan structure, forming axial, radial, and tangential airflow to assist grass plants in standing upright.  ‌

Applicable scenarios
Suitable for trimming ordinary artificially planted lawns, with lower requirements for lawn quality, but the cutting effect is slightly inferior to roller cutter models. The critical cutting speed needs to reach 40-43 meters per second, and in practical work, high speeds (such as 3000 revolutions per minute or more) and sharp blades are often used to ensure cutting efficiency.  ‌

Coordination with other components
Usually working in conjunction with components such as the cutterhead, engine, and walking wheels, power is transmitted to the blades through a transmission system to achieve efficient trimming.  ‌