The reason for the variety in sizes probably doesn’t warrant too much explanation. But, for those curious about the reasons why their mower blades look like they’ve been beaten into unintelligible shapes, here’s why: your various lawn mower types have different aerodynamic functions, and they’ve been designed for different applications.

Standard or Deck Blades

Sometimes referred to as 2-in-1 blades, standard blades probably get the most use in the lawn trimming game. For the most part, these blades have an aerodynamic design that causes less strain on the engine that has to turn it. The front cutting edge remains flat, and their back edge has a slight upturn that generates a continuous “suck and cut” action.

Because these mower blade types provide great lift in one direction, they’re good for side discharging and bagging applications.

Low Lift Blades

When you’re trying to provide enough lift for the blade to cut your grass, but not so much that your super sandy lawn gets pulled up into the deck also, the low lift blade will be your friend. Here’s why: with a smaller uptick at the back of the blade, they provide less lift than your other mower blade types.

They won’t do as good of a job cutting your beefier grasses as a blade that produces a ton of lift, but they also don’t kick up as much dust. Also, because they produce less drag, they’re easier on your fuel consumption as well as the wear and tear put on your engine.

High Lift Blades

With a more dramatic upturn at the back of the blade, the high lift mower blade produces much more lift. Because it produces so much lift, this type will require a more powerful engine to work well. And, it can cost you a bit more in fuel to use it. But, it generally results in a better cut in thicker grasses. It’s an ideal choice for when you’re bagging up your clippings since the improved lifting force can rocket the clippings up and out of the deck.

Mulching Blades

The mulching blade has a more unique design than your deck and lift blades. Rather than employing a relatively straight cutting edge with a swoop in the back, the mulching blade kind of looks like it swoops all over the place.

This design allows your mower to suck the grass upward to be cut, then the clippings are recycled around the deck to get chopped up even more. The middle part of the mulching blade, the weird bit, is designed to send the nutrient-rich, fine-cut clippings back to the ground where they can feed the soil.

Post time: Dec-20-2021