Blade dimensions must exactly match your mower model – incorrect length affects cutting quality and safety. Products like NOŽ 380MM ZA KOSAČICU 78518000 specify precise measurements, which is crucial for compatibility. Brands such as AL-KO, OREGON and WOMAX offer a wide range of original and universal solutions.
Quality blades are made from high-carbon steel with hardness between 38-42 HRC, ensuring wear resistance and re-sharpening capability. Cheap blades made from soft steel lose their edge quickly and can deform when hitting rocks or roots.
An unbalanced blade creates vibrations that damage bearings and the motor shaft. After replacement or sharpening, always check balance – the blade suspended on a spindle should rest in a horizontal position. Brands like PRODU and POWERÉD deliver factory blades already precision-balanced.
Replacement is necessary when the blade edge shows deep nicks, deformation, or when sharpening no longer produces results. Before removing the blade, disconnect the spark plug and tilt the mower so the air filter is on top. Use gloves and a wrench of appropriate size – blade bolts are usually very tight.
Sharpening with a file or grinder should be done at a 30-45 degree angle, following the original cutting edge line. Remove equal amounts of material from both sides to maintain balance. Regular cleaning after mowing wet grass prevents corrosion and extends blade life.
Besides the blade, consider purchasing spare bolts, washers and adapters that simplify replacement. Brands like VILLAGER and AGM offer comprehensive maintenance kits that include tools for dismounting and sharpening. Always keep a spare blade on hand – swapping during mowing season saves time and enables uninterrupted lawn care.
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