There are a variety of designs and sizes of lawn mower blades. Some blades are made specifically for specific lawn mowers. They come with a stamped part number which can be referenced in the instruction manual.



A high-lift blade for instance, generates a powerful suction which efficiently propels the grass clippings to the point that they can be bagged. Additionally, it provides optimal air flow to prevent clogging in conditions with dense grass.


Size


In order to choose the best replacement lawnmowers, you need to know the overall length and pattern of the holes on the blade. The shear pin location holes and their distance from the boss of the blade should also be identified. These measurements can narrow down results due to them being in accordance with the style and shape of the specific appropriate mower Blades sharpener blade, preventing damage to components of the mower and causing vibrations.



Standard blades, often referred to as 2-in-1 or lift blades, are often used on regular lawnmowers and side discharge lawnmowers that are not mulching or bagging. The back of the blades features a slight upward turn, which creates a constant cutting and suction action.



The high lift blades are designed to be employed for side discharge mowing. They feature an upward-facing turn on the back. This kind of blade requires greater power from the engine in order to be effective and may be a bit more expensive in fuel expenses, but it is good for grasses with thicker blades that are difficult to cut with normal blades.


Material


The lawn mower's blades are typically made of the most durable form of steel. Metals like iron or other can be utilized. Steel is the most sought-after option for mower blades because it offers a great combination of strength and toughness. It is usually treated with heat to make it harder. The process of tempering improves the toughness and durability and also the resistance to corrosion.



High carbon steel is a better option for mowing, as it has a higher tensile strength than low-carbon steel which makes it more resistant to damage. It is strong enough to stand up to stumps, trees and other objects which might hit the blade.



To maintain a lawnmower blade it is recommended to keep it sharp and to use it often. It is also crucial to ensure that the blade is balanced. It is possible to do this by placing a small nail in the board and then using a file on it to adjust the nail so that it reaches the center of the blade.


Sharpness


Sharpness of blades depends on many factors, including the size of the lawn and the frequency with which it is used. Sharpening is more frequent for large lawns with a lot of pebbles, trees, rocks and weeds. The continuous usage of a dull mower can also cause the blade to wear down faster.



Sharp cutting edges are required for a neat and pleasing cut. A sharpening blade will accomplish this. It is similar to an industrial bench grinding machine but is much smaller and less expensive.



It is crucial to ensure that the blade is balanced regularly, especially after it has been sharpened. Sharpening may cause the blade to become unbalanced as it removes more metal from one side than the other. Hang the blade through the bolt hole and onto an anchor to verify its balance. If the blade tilts towards the other side, it has to be filed to balance.


Maintenance


Utilize a tool specifically designed to sharpen a mower blade. It functions like a drill, however it has an edged stone designed to hold the edge, leaving no space for error. This tool is faster and more accurate than hand filing. Check the balance of the blade by placing it over an anchor through the hole. If one end drops lower than the other, it will need to be filed slightly more to be properly balanced.



To prevent an engine start-up while working on a cutting blade, turn off the engine, and then remove the spark plug cable. Block the blade using blocks to hold it in place while you loosen its fastening bolt by using a ratchet or wrench. Be sure to note which blade side is marked when you reinstall it to ensure you have it properly mounted. Spray WD-40 or a similar lubricant, onto the bolt that is used to mount it prior to tightening.