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There are numerous types and sizes of lawn mower blades. Some are specifically designed for particular mowers, and include the part number stamped on the blades that are able to be referenced in the list of parts in the manual for the mower.

A high-lift blade, as an instance, generates a powerful suction which efficiently propels the clippings up so that they can be taken away for bagging. The blade also provides optimal air flow in dense grass conditions to prevent the clogging.

Size

 

 

The overall length of the mower blade and the hole pattern must be known to correctly pick the correct replacement lawnmower blades. The location of the shear pin holes, and their distance from the boss of the blade must be likewise known. These measurements help narrow the results of a search because they are in line with the style and shape of a specific mower blade to avoid damaging mower components and creating vibrations.

Standard blades, also known as 2-in-1 or lift blades, are often used on regular lawnmowers and side discharge lawnmowers that do not use mulching or bagging. Their back edge has an upward slope that produces a constant suction and cutting action.

High lift blades feature sharp upturns at the rear of the blade. They are made for mowing side discharge. This type of blade requires more power from the engine in order to work well and can cost more in fuel costs but it's great for thicker grasses that are difficult to cut using standard blades.

Material

 

 

The blades of lawn mowers are typically made of an extremely durable steel. It could also be constructed out of iron or other types of metals. Steel is a popular material for mower blades because it provides robustness and durability. The use of heat to make the steel harder. This process is called tempering, and it enhances the durability, toughness as well as resistance to corrosion.

High-carbon steel is a better choice for mowing as it has a higher tensile strength than steel with low carbon which makes it more resistant to damage. It is able to withstand stumps, trees and other items that can strike the blade.

For a lawnmowers blade to last it is important to keep it sharp, and to use it often. The blade should also be balanced. This can be done by putting a nail into the board and then using the file to adjust it until the nail touches the middle of the blade.

Sharpness

 

 

The sharpness of your blades depends on many factors such as how often you are using it, as well as the dimensions of your lawn. Large lawns with lots of rocks, tree roots and pebbles will require frequent sharpening. A dull blade will wear out faster if you use frequently.

To get a clean and attractive cut an edge that is sharp is essential. This is possible by using a blade sharpening drill bit that functions similar to the bench grinder, but is smaller and more affordable.

The blade needs to be balanced on a regular basis, especially after it has been honed. Sharpening processes remove metal from one side of the blade faster than the other, which can leave the blade unbalanced. To test the balance, hang the blade on a nail through its bolt hole and observe whether it is even. If the blade is tilted towards the other side, it has to be filed to balance.

Maintenance

 

 

When sharpening a mower blade, make use of a tool that works similar to a drill bit, but using a stone that is designed to hug the edge of the blade and leave very little space for error. This tool is faster and more precise than hand filing. When both sides are smooth make sure you check boost the cutting efficiency of your grass mower blade balance of the blade by putting it on an anchor through the hole in the bolt. If the blade is not balanced, you will need to file it a little more.

Before removing a blade, make sure the engine is turned off and pull the spark plug wire in order to prevent the engine from beginning while working on the blade. Then, block the blade to hold it in place while you loosen the bolt fastening it with the help of a ratchet or wrench. Be sure to note which side of the blade is marked when reinstalling it to make sure you get it mounted correctly. Spray WD-40, or a similar lubricant on the bolt for mounting prior to tightening.