Lawn mower blades are available in a range of designs and sizes. Certain blades are designed specifically for particular lawn mowers. They come with a stamped part number that is referred to in the manual.



A high-lift blade, for instance, creates a strong suction that effectively propels clippings upwards so they can be stored. The blade is also able to provide the best air flow in trustworthy grass mower blade sharpener, preventing obstruction.


Size


The length of the mower blade as well as the hole pattern should be identified to select the right replacement lawnmower blades. Additionally, the shear pin locating holes and their distance to the blade boss must be identified. These measurements narrow down search results because they match the style and shape of the specific mower blade to avoid damaging components of the mower and causing vibrations.



Standard blades (also called 2-in-1 blades or lift blades) are typically used on lawnmowers that have side discharge and lawnmowers without bagging or mulching. Their back edge features an upturn of a small amount that creates continuous suction and cutting.



High lift blades are designed to be used to cut side discharges. They have sharp upward turns on the back. This kind of blade requires greater power from the engine to perform well. It may cost more in fuel costs but it's great for grasses with thicker blades that are difficult to cut using normal blades.


Material


The blades of lawn mowers are usually made from a durable type of steel. It could also be constructed from iron or other metals. Steel is a very popular material for mower blades because it provides toughness and durability. It is usually treated with heat to create a hardened surface. This process is called tempering and enhances the durability, toughness and resistance to corrosion.



It is better to use high carbon steel when cutting over low carbon steel as it is more robust. It is strong enough to stand up to trees, rocks, and other objects that could strike the blade, but not break it.



For a lawnmowers blade to last it is recommended to keep it sharp and use it regularly. It is also important to make sure the blade is balanced. This can be done by inserting a tiny nail into the board, and then using a file over it to adjust the nail so that it touches the center of the blade.


Sharpness


Sharpness of blades depends on various factors, including the size of the lawn and how often it is used. Large lawns that are brimming with rocks, tree roots, pebbles, and weeds will require frequent sharpening. A dull blade will wear out quicker if you utilize the blade regularly.



Sharp cutting edges are necessary for a clean and attractive cut. This can be achieved with a sharpening drill bit that functions similar to the bench grinder, however it is much smaller and less expensive.



The blade should be balanced frequently, especially after having been sharpened. Sharpening can cause the blade to be imbalanced since it removes more metal from one side than the other. To determine the balance, put the blade on the bolt hole, and check whether it is even. If the blade is tilted towards the other side, it needs to be filed to balance.


Maintenance


Use a special tool to sharpen a mower blade. It is similar to the drill, but it comes with an edged stone made to be able to grip the edge, leaving no space for errors. This tool is much faster and more precise than hand-filing. Check the balance of the blade by placing it over a bolt that is inserted into the hole. If one end drops lower than the other, it needs to be filed a bit more to be properly balanced.



Before removing a blade, ensure that the engine is off. Then, pull the spark plug wire to prevent the engine from accidentally starting while you're working on the blade. Then, block the blade to hold it in place while loosening the bolt that fastens it using a wrench or ratchet set. After reinstalling the blade be sure to note which side is marked downward to ensure that it is mounted in the proper place. Spray WD-40 or a similar lubricant, on the mounting bolt before tightening.