Rider mower blade damage

[fixit1ddh]

Dull mower blade.

 

[Mower King]

Both ends of both blades. No sand in my soil.

Again...whatever you are mowing, sticks, leaves or just grass, wears the bottom of the lift area in time (just as it wears out the cutting edge also), then creates a wear line, and breaks off.

 

[Rivets]

The causes of wear on a blade in your condition is either an extremely abrasive cutting conditions or buildup on debris under the cutting deck.

 

[ILENGINE]

The causes of wear on a blade in your condition is either an extremely abrasive cutting conditions or buildup on debris under the cutting deck.

I would say in the case of the OP it is both.

 

[bertsmobile1]

It is perfectly normal blade wear
Of the blades I replace around 90% of them are due to the flutes breaking off
Of all of the spindle bearings I replace at least 50% are due to continuing to use the mower with the flutes broken off .
What you think is in your soil and what is actually in your grass are two totally different things
Normal enviromental dust will be deposited on you grass on a daily basis
The grass itself will make an erosion grove in the blades despite the fact that grass is soft & the blades are very hard .
Water is very soft but it made the Grand Canyon , over time it wears out the outlet holes on sprinklers & hose nozels .