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  1. #1
    Join Date
    Dec 2013
    Posts
    10

    Default 1200# implement and 1/2"x3" flat bar

    I have an implement for a farm tractor that weighs 1200#s. I'm building a three point hitch mount out of A36 flat bar that is 1/2x3". The flat bar has 1-1/8" holes drilled in it 1-1/2" from the back and 1-1/2" from the top and bottom for an outside edge distance if 15/16" all the way around. The implement is 7' long overall with the 1/2" flat bar sticking 6" past unit. My question is: will the (4) pieces of 1/2" flat bar with the 1-1/8" holes be strong enough to pull and LIFT the implement?

  2. #2
    Join Date
    Apr 2013
    Location
    Southeast idaho
    Posts
    30

    Default 1200# implement and 1/2"x3" flat bar

    What kind of an implement? That will make a huge difference on weather or not it will be strong enough to pull it.

  3. #3
    Join Date
    Apr 2013
    Location
    Southeast idaho
    Posts
    30

    Default 1200# implement and 1/2"x3" flat bar

    Pictures would help

  4. #4
    Join Date
    Oct 2006
    Location
    Illinois
    Posts
    601

    Default

    Picture would definitely help. Are you making the 3 point hitch like what's on a rear blade ? What type of implement ? Here's a search I did that may help.

    http://www.bing.com/images/search?q=...itch&FORM=IGRE

    http://www.bing.com/images/search?q=...ents&FORM=IGRE

  5. #5
    Join Date
    Dec 2013
    Posts
    10

    Default Landplane grader

    The implement is a landplane grader. Ill attach some pics! The unit is 7'x7'. I plan on using (6)1/2x3"x12" pieces of bar across the front tube and attaching to the two center supports that are 32" apart.image.jpgimage.jpg

  6. #6
    Join Date
    Dec 2011
    Posts
    400

    Default

    How big a tractor do you plan to use? I would keep the Cat II attachment as short as possible, not much more clearance than 1/2" behind the 3 pt. hitch arms in the pocket or if you need the extension for some reason maybe exterior gussets as far out as you can get without interfering with the pins. I don't know how heavy the tube is but the 1/2" x 12" reinforcement is a good idea I think. What are you using for the 3rd link?---Meltedmetal

  7. #7
    Join Date
    Dec 2013
    Posts
    10

    Default Tubing size

    The center link will be mounted on the same 4"x4"x5/16" tubing 20" up in between the two lower links. I will be using the same flat bar. The flat bar is cut in 12" sticks but at least 6" will be welded to the cross tube and overlap the two supports in the middle. Tractor is a 58 horse ih784. Keep in mind this is where the hitch will attach to the impement: A36 flat bar that is 1/2x3". The flat bar has 1-1/8" holes drilled in it 1-1/2" from the back and 1-1/2" from the top and bottom for an outside edge distance if 15/16" all the way around. these (4) pieces are where the lower arms will slide into an attach. overall lenght may be 12 inches but only 4-6 sticking past the implement itself.
    Last edited by ih784; 12-09-2013 at 08:34 AM.

  8. #8
    Join Date
    Oct 2006
    Location
    Illinois
    Posts
    601

  9. #9
    Join Date
    Dec 2013
    Posts
    10

    Default

    You are correct BD1. I have the impelement built and it weighs a total of 1200#. I'm just not sure if what I have made, the (4) pieces of 1/2" flat bar with the 1-1/8" holes be strong enough to pull and LIFT the implement? The two grader blades I have will be cutting 1" below the skids at a width of 7'. I guess I'll put them on there and try it. If it doesnt work I'll cut them off and buy some 5/8"x4" flat and go again.

    Thanks guy for your time!

    John

  10. #10
    Join Date
    Dec 2011
    Posts
    400

    Default

    I would expect that with 70 horsepower you will not have too much of a problem. The next question will be "Is your tractor big enough?" Looks good so far.---Meltedmetal

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