Have you ever wondered how a mower actually cuts grass? It’s not like it operates like a pair of scissors, but rather a blade whips around to somehow cut this seemingly flimsy piece of grass. The only way this can work is if there is resistance at both ends of the turfgrass, which is where the blade comes in. The spinning motion combined with the design of the blade pulls the grass up and holds it in place, giving the resistance necessary to make a clean cut. This explanation helps you better understand the different types of blades and the different applications for each.
The first step is knowing how you are going to discard the grass – discharge, mulch or bag. Mulching requires a specific blade that recirculates the grass, cutting the grass being removed multiple times, making them less noticeable. These blades might be referred to as “3 in 1”. Mulching blades are often found as part of a mulching kit.
If you are discharging or bagging, then you have several other blade options in front of you.
Low lift blade
Low lift blades are primarily used in sandy or dusty environments. Because there is a lower suction of air pulling that turf blade up into the mower, there is less sand & dust kicking up, causing less deterioration to the blade. But you won’t get the same clean cut as you would from a medium or high lift blade. Low lift blades are also great for tall overgrown grass or weed areas as the lower lift blades take less horsepower and bogs down less in tough conditions.
Medium lift blade (standard OEM)
Medium lift is the most typical blade and is normally what comes installed on your mower. The slight curve and higher lift better pulls the blade up for a more precise cut. A medium lift blade is recommended on thicker grass such as bluegrass or St. Augustine.
High lift blade
A high lift blade delivers maximum airflow for the best cut. But it does need a higher horsepower mower to perform, therefore using more gas. This is the ideal choice when you are bagging, since the higher lift force will send the clippings out of the deck.
Still not sure? Horizon offers a large selection of OEM and aftermarket blades for all applications. Stop by one of our stores and we’d be happy to help you find the right blade for you. Make sure you have the brand, model, and serial number.