What are the blade lengths for lawnmowers?

May 16, 2026

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Lawnmower blade sizes vary considerably depending on the type and intended use. Key points are as follows:

 

1. Small Household Brush Mowers

Blade length is generally 15-25 cm, suitable for mowing small lawns or simple tasks. They are lightweight and flexible.

 

2. Professional Brush Mowers

Blades can reach 30-50 cm, suitable for large green areas or shrubbery, capable of cutting wider areas in one pass, improving work efficiency.

 

3. Agricultural Self-Propelled Grass Choppers

Some models have 7.8 cm blades, adaptable to multiple cutting sizes, emphasizing durability, suitable for the needs of agricultural grass shredding and returning to the field.

 

4. Push Lawn Mowers
Common blade sizes include:

• 18 inches (approx. 45.72 cm): For example, the BT-Swimming model is actually 117 mm, and the Marchbo straight blade model is 450 mm;

• 19 inches (approx. 48.26 cm) to 21 inches (approx. 53.34 cm) vary; the specific length needs to be checked according to the brand and model.

 

5. Manual Lawn Mowers
Taking the American 1415-16 model as an example, the cutting width is 16 inches (approx. 40.6 cm), suitable for traditional manual operation.

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