There are numerous designs and sizes of lawn mower blades. Some blades are specifically designed for particular lawn mowers. They are stamped with a part number which can be referred to in the manual.

A high-lift blade, for example, produces a powerful suction which efficiently propels the clippings upwards so they can be stored. It also allows for an optimal air flow even in illuminating grass mower blades sharpener conditions to prevent clogging.


To select the correct replacement lawnmowers, you need to know the overall length and hole pattern of the blade. Additionally the shear pins used to locate holes and their distance to the blade boss must be identified. These measurements help narrow results due to them being in accordance with the shape and design of the specific mower blade in order to prevent damaging components of the mower and causing vibrations.

Standard blades (also known as 2-in-1 blades, also known as lift blades) are typically used on lawnmowers equipped with side discharge and lawnmowers without bagging or mulching. The back edge of the blades features a slight upward incline that results in continuous cutting and suction action.

High lift blades have a dramatic upturn to the back of the blade. They are specifically designed to be used for side discharge mowing. This kind of blade requires greater power from the engine to perform well. It may cost more in fuel, however it’s ideal for grass that is thicker and more difficult to cut with standard blades.


A lawn mower blade is usually made of steel that is durable. It is also made of iron or other metals. Steel is the most sought-after option for mower blades because it offers a great combination of strength and toughness. Heat is used to make the steel harder. This process is known as tempering and increases its toughness, durability as well as resistance to corrosion.

It is better to use high carbon steel when mowing than low carbon steel because it is more durable. It is able to withstand the impact of rocks, tree stumps and other objects that could strike the blade, but not break it.

For a lawnmowers blade to last it is important to keep it sharp, and use it regularly. The blade needs to be balanced. This can be done by placing a nail in the board and then using a file to adjust the nail until it reaches the middle of the blade.


The sharpness of your blades will depend on a variety of factors, including how much you use it and the dimensions of your lawn. Sharpening is required more often on large lawns that have lots of pebbles, trees, rocks and weeds. A dull blade wears out faster if you use the blade regularly.

Sharp cutting edges are required for a neat and pleasing cut. A blade sharpening bit will accomplish this. It functions like an industrial bench grinding machine but it’s much smaller and cheaper.

The blade must be balanced frequently, especially after having been sharpened. The process of sharpening removes metal from one end of the blade more than other, which can leave the blade unbalanced. To test the balance, put the blade on a nail through its bolt hole and observe whether it appears like it is level. If one end tilts higher than one, the blade needs to be filed more to get it balanced.


Use a special tool to sharpen a mower’s blade. It works like a drill, but has the stone specifically made to be able to grip the edge and leave no room for error. This tool is quicker and more accurate than hand-filing. Verify the balance of the blade by placing it over an anchor through the hole. If one end drops lower than the other it’s time to be filed more in order to ensure it is balanced.

Before you take off a blade make sure the engine is turned off. Then, pull the spark plug wire to prevent the engine from getting started while you work on the blade. Block the blade to hold it in place while loosening the bolt that fastens it using the help of a ratchet or wrench. Remember which blade side is marked when reinstalling it to make sure you get it correctly mounted. Spray WD-40 or a similar lubricant, on the bolt for mounting prior to tightening.

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