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  1. #1
    Platinum Member
    Join Date
    Dec 2008
    Posts
    898
    Location
    Buffalo, New York
    Tractor
    318 John Deere, 4200 John Deere, 1947 John Deere "M"

    Default Stump Grinder ???'s

    Stump Grinder Questions!

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    I want to build a 3 Point hitch Stump Grinder Attachment patterned after several after market units out there for my John Deere 4200. (26hp 3cyl Diesel w/ Backhoe/Bucket). Two immediate questions: What is the cutter wheel rotation suppose to be? I say lower teeth should be moving toward the tractor. Thus if your standing on the right side of the machine it would turn counter clockwise! The PTO turns counterclockwise (Doesn't it?) thus a right angled gearbox mounted on the left hand side would cause it to turn as described! This would cause the tractor to be pulled toward the stump when cutting. I think that's safer than having it try to launch the tractor forward. Also, Wouldn't it relieve 'side pressure' bearing wear if I were to build it with a shaft mounted cutter wheel supported on both ends with pillow blocks? I would leave a splined end facing the gearbox that I could hook up with a Lovejoy type connector. (IE two internally splined metal hubs with a rubber insert. Also I need parts sources for the wheel if I don't 'tooth up' a piece of 1/2" plate. I'm thinking a 24" wheel! Any help appreciated! ~Scotty

  2. #2
    Platinum Member rtdiggr's Avatar
    Join Date
    Sep 2007
    Posts
    574
    Location
    Ont. Canada
    Tractor
    Massey Ferguson 1433v

    Default Re: Stump Grinder ???'s

    Hi Scotty i am not sure i can help you on how to built a stump grinder BUT i do own one i will supply as many pics as i can for you. We do have about 12" of snow and yes it is outside.

    The wheel turns away from the tractor.

    Here are some pics for now.

    Shane


    http://www.tractorbynet.com/forums/a...1&d=1230074293
    Attached Thumbnails Attached Thumbnails -100_0431-jpg   -100_0430-jpg   -100_0429-jpg  

  3. #3
    Platinum Member rtdiggr's Avatar
    Join Date
    Sep 2007
    Posts
    574
    Location
    Ont. Canada
    Tractor
    Massey Ferguson 1433v

    Default Re: Stump Grinder ???'s

    I should also add that you will not get the feeling of the tractor being pulled toward the stump.

    When you put the unit down there is a C channel with grooves cut out to make teeth. The unit doesn't move to much when that is down.

    Also you will not be able to chip to much at a time your [and mine] machine will bog down. you can get a couple of inches but after that it starts to bog down. especially on a fresh cut stump.

    My teeth have to come from the dealer which isn't to bad a price at $18 a piece until you figure i need 36 ouch.

    I am not sure where you are located but i may be selling my PTO gear box off of my stump grinder.

    Shane

  4. #4

    Default Re: Stump Grinder ???'s

    Shaver Manufacturing makes a great stump buster, check them out Shaver post driver, hole digger, stump grinder, log splitter

  5. #5
    Member
    Join Date
    Dec 2008
    Posts
    32
    Location
    COLDSPRING, TX
    Tractor
    L4400 KUBOTA

    Default Re: Stump Grinder ???'s

    Hi..
    Just a word of warning,,,
    PTO grinders are very hard on the pto unit..
    My experience has been that the grinders are
    stronger than the pto units, will do damage even
    with a slip-clutch..

    Bob
    BOB AND JAN M...

  6. #6
    Veteran Member wedge40's Avatar
    Join Date
    Oct 2007
    Posts
    2,194

    Default Re: Stump Grinder ???'s

    Quote Originally Posted by SEMI-RETIRED View Post
    Hi..
    Just a word of warning,,,
    PTO grinders are very hard on the pto unit..
    My experience has been that the grinders are
    stronger than the pto units, will do damage even
    with a slip-clutch..

    Bob
    I guess that would make brush hogs and PTO wood chippers very hard on the pto unit?

    Wedge
    1967 Ford 4000,Mahindra 4530 with FEL and BH, Box blade, straight blade, FEL, Rake, Bushhog, Backhoe, Jinma chipper, KKII tiller, Grapple. Mahindra 4530, with FEL and Backhoe.

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