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Why do mower blades wear like this?

Discussion in 'Chainsaws and Power Equipment' started by fishingpol, Aug 26, 2017.

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  1. fishingpol

    fishingpol

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    These blades are from my dad's Toro walk behind mower dual blades. He went to check the blades and found the trailing edges pretty worn out. The leading edges have no nicks and he rarely hits yard debris. Both end are like this

    Maybe just airflow going over the top as there is an upsweep? He was more curious why this happens. I can see why it would cause blade balance issues or having a fragment fly off.

    20170826_075908.jpg
     
    fishingpol, Aug 26, 2017
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  2. Chris F

    Chris F

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    The upturn gets sandblasted off over time from bits of sand and small gravel that get picked up. If you have sandy soil this will happen quicker.
     
    Chris F, Aug 26, 2017
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  3. fishingpol

    fishingpol

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    Ah, that makes sense. Thank you.:yes:
     
    fishingpol, Aug 26, 2017
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  4. CR888

    CR888

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    Yup, completely normal wear. I usually replace at about that point.
     
    CR888, Aug 26, 2017
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  5. Backwoods Savage

    Backwoods Savage Moderator

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    Amen to that. Our blades do not last very long at all in this sand.
     
    Backwoods Savage, Aug 26, 2017
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  6. Chvymn99

    Chvymn99 Moderator

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    :bug:.... never seen that before... but what Chris said makes sense... but wow...
     
    Chvymn99, Aug 26, 2017
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  7. Gary_602z

    Gary_602z

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    When my wife used to mow we would get a weird wear on the bladea. They would be all bent up and twisted! I think she aimed for any object that was laying in the yard!:headbang:

    Gary
     
    Gary_602z, Aug 26, 2017
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  8. fishingpol

    fishingpol

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    We sometimes hear a lawn mower going in the neighborhood, a loud thwunk, and a curse word.:rofl: :lol:
     
    fishingpol, Aug 26, 2017
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  9. fishingpol

    fishingpol

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    I'll be checking mine before leaf mulching season.
     
    fishingpol, Aug 26, 2017
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  10. cus_deluxe

    cus_deluxe

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    Yep, i get one season out of mower blades, i dont even bother sharpening em, as they get worn out just knockin the weeds down and suckin up all the sand.
     
    cus_deluxe, Aug 26, 2017
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  11. HDRock

    HDRock

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    I had a piece fly off of mine when I hit a stick
     
    HDRock, Aug 26, 2017
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  12. Firewood Bandit

    Firewood Bandit

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    Yup the wear is abrasion from sand.

    Just replaced the gator blades on my big mower, 62" JD 2305 with Yannmar diesel. Got 11 year mowing 3 acres weekly. Guess I should not complain. The top mulching edge didn't have much of an edge left and I couldn't sharpen that.
     
    Firewood Bandit, Aug 26, 2017
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  13. MasterMech

    MasterMech The Mechanical Moderator

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    My old neighbors would hit the same roots and rocks every single friggin week. Like nails on a chalkboard......
     
    MasterMech, Aug 26, 2017
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  14. Fifelaker

    Fifelaker

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    Switch to a low lift blade as they are not that tall and can't wear what isn't there. I went from high lift blades to low years ago and get almost double the life out of them.
     
    Fifelaker, Aug 27, 2017
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  15. TurboDiesel

    TurboDiesel

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    My buddy's neighbor would mow right across their gravel driveway every time she went around. She had the mower set on scalp...and it took at least a dozen laps around house...we laughed/cringed every time...
    :doh::rofl: :lol:
    :doh::rofl: :lol:
    :doh::rofl: :lol:
    :doh::rofl: :lol:
    :doh::rofl: :lol:
    :doh::rofl: :lol:
    :doh::rofl: :lol:
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    :picard:


    :rofl: :lol::rofl: :lol::rofl: :lol:

    Like you said...nails on a chalkboard!
     
    TurboDiesel, Aug 27, 2017
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  16. Backwoods Savage

    Backwoods Savage Moderator

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    What do you mean, "...my wife used to mow..."? That sounds crazy.
     
    Backwoods Savage, Aug 27, 2017
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  17. MasterMech

    MasterMech The Mechanical Moderator

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    o_O:picard:
     
    MasterMech, Aug 27, 2017
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  18. Gary_602z

    Gary_602z

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    She got fired for poor performance, just like her cooking and cleaning!:D

    Gary
     
    Gary_602z, Aug 27, 2017
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  19. ironpony

    ironpony

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    Also cutting wet/damp grass, at the speed the blade tip is traveling water becomes abrasive......
     
    ironpony, Aug 27, 2017
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  20. Hydro Farmer

    Hydro Farmer

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    Just gotta send it.... Run em till they die

    30 magazine clip on my ghost gun
     
    Hydro Farmer, Aug 30, 2017
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