Lawn mower blades come in a range of designs and sizes. Certain blades are designed specifically for specific lawn mowers. They have a stamped part number that can be referred to in the instruction manual.
For example, a high lift blade creates a powerful suction which efficiently sends clippings up so that they can be bagged. The blade is also able to provide the best air flow in grass, preventing clogging.
Size
The overall length of the mower blade and the hole pattern must be figured out to ensure that you pick the correct replacement lawnmower blades. Additionally, the shear pin locating holes as well as their distance from the boss of the blade must be known. These measurements can narrow down search results because they match the style and shape of a specific mower blade in order to prevent damaging components of the mower and causing vibrations.
Standard blades, sometimes called 2-in-1 blades or lift blades are commonly used on regular lawnmowers, as well as side discharge lawnmowers that are not mulching or bagging. Their back edge is a slight upturn that generates an ongoing suction and cutting action.
High lift blades are characterized by sharp upturns to the back of the blade and are specifically designed for side discharge mowing. This type of blade requires more energy from the engine to perform well. It may cost more in fuel, however it’s great for grasses with thicker blades that are difficult to cut using regular blades.
Material
A lawn mower’s blade is generally made from a type of steel that is durable. It is also made out of iron or other types of metals. Steel is the most popular metal for mower blades as it offers a combination of robustness and durability. It is heated to harden the steel. Tempering increases the strength and durability of the material, as well as resistance to corrosion.
It is recommended to use high carbon steel when mowing over low carbon steel as it is more robust. It is able to withstand rocks, tree stumps and other items that could cause damage to the blade.
The best way to maintain the blade of a satisfying lawn mower blades sharpener mower is to use it regularly and ensure that it is sharpened properly. The blade needs to be balanced. It is possible to do this by inserting a tiny nail on the board and after that, using a file on it to move the nail so that it touches the center of the blade.
Sharpness
Sharpness of blades depends on many factors, including the dimension of the lawn and how often it is used. Sharpening is more frequent on large lawns that have a lot of pebbles, rocks, tree roots and weeds. A dull blade wears out quicker if you utilize frequently.
A sharp edge for cutting is necessary for a clean and attractive cut. This can be accomplished through a that sharpens drill bits, which operates much like a bench grinder but is smaller and more affordable.
The blade should be balanced frequently, especially after having been sharpened. Sharpening can cause the blade to become unbalanced as it takes more metal off one side than from the other. Hang the blade through the bolt hole on a nail to check its balance. If the blade tilts to the other side, it will need to be filed to balance.
Maintenance
When you are sharpening the mower blade, you should use a tool that works similar to a drill bit, however with a stone designed to fit around the edge of the blade leaving the least amount of room for mistakes. This tool is faster and more precise than hand-filing. Examine the balance by hanging the blade over a bolt that is inserted into the hole. If the blade isn’t well balanced, you’ll need to file it a little more.
To stop an engine from starting while you are working on a cutting blade, turn off the engine, and then remove the spark plug cable. Then block the blade in order to hold it in place while you loosen the bolt that fastens it using a wrench or ratchet set. Be sure to note which side of the blade is marked down when reinstalling it to ensure that you have it mounted correctly. Spray a bit of WD-40 or another lubricant on the bolt that holds it in place prior to tightening it.