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  1. #1

    Default Backhoe sub-frame

    I have a Jinma Jm-454 tractor with the FEL already on it, just wanted to know if i need a sub-frame to put on a 3 pt backhoe OR should i make a sub-frame and mount the backhoe to it.???
    If i do need a frame how far fwd do i need to run the frame, all the way to the front or just to the FEL attachment on the transmission ??
    Thanks for your help as i am making a Backhoe .



    Horse (Jonathan)

  2. #2
    Veteran Member
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    Kansas, Butler county, Just east of DooDah
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    Kubota L4200 GSTCA

    Default Re: Backhoe sub-frame

    Jonathan,
    Definately use a sub-frame...
    Looks like you may have a handle on fabricating things....
    Keep it simple, try not to re-invent things and go to your dealer's lot, or any dealers lot. look at what has been done on several different makes of BH/Tractors. Use their best engineering and make it as compact, stout and serviceable as possible. Good luck, KennyV.

  3. #3
    Veteran Member
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    NH seacoast & Coos County
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    Kioti DK45S

    Default Re: Backhoe sub-frame

    Look here Woods Equipment Company - Manuals
    for subframe ideas. There may be one listed for your tractor. Some things are easier bought than build even if you're a talented builder. If not you will at least see how they generally mount. MikeD74T

  4. #4
    Veteran Member
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    Caldwell Co. NC
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    2006 Kama554; 92 Belarus 250AS

    Default Re: Backhoe sub-frame

    Mine goes to the FEL brackets. My Koyker FEL has some pretty good bracing running to the front of the frame. Your JM454 is probably set up similar to my KM554. Here is what I did:
    http://www.tractorbynet.com/forums/b...0-backhoe.html
    2006 Kama 554, 92 Belarus 250AS, Bombardier Outlander Max 400.

  5. #5
    New Member jcurtisB78's Avatar
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    Upstate NY
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    Kubota B7800

    Default Re: Backhoe sub-frame

    Quote Originally Posted by MikeD74T View Post
    Some things are easier bought than build even if you're a talented builder. If not you will at least see how they generally mount. MikeD74T
    Sound advice.

    Quote Originally Posted by horseman8m View Post
    Thanks for your help as i am making a Backhoe .
    Just curious, where did you get your plans? I am considering a similar project for my kubota.

    Thanks in advance.

  6. #6

    Default Re: Backhoe sub-frame

    Thank you for your replys, I am retired air force aircraft mech. and a cert FAA A&P mech. ,, so i am doing the plans myself and building the backhoe and frame . and now a subframe as well.

    I know it has been done before and i am doing this just because i want to do it , not to just buy one and put it on, but to build it from scratch .
    I am going to post photos as i go but now i am planning what i have to do to the tractor to take a 10 ft reach , 8 ft deep backhoe.

  7. #7
    Elite Member sandman2234's Avatar
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    Jacksonville, Florida
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    JD2555 and a few Allis Chalmers

    Default Re: Backhoe sub-frame

    Subframe, definitely. How far you run it under the tractor will determine the life of the tractor, especially if you have been know to be rough on equipment, or if you accidently mis-calculate some minor stress. Extra steel never hurt, unless your trying to get it airborne.
    David from jax
    A serious accident is one that money won't fix.

  8. #8
    Silver Member alltoys's Avatar
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    Vimy, Alberta
    Tractor
    Montana R28

    Default Re: Backhoe sub-frame

    Horseman,

    Personally I don't believe you need a subframe for a tractor as they do not have enough hydraulic power to harm anything. Compared to a purpose built backhoe there is definite night and day difference. I have been operating my tractor for years with my hoe and no problems with the frame what so ever. I have also operated backhoes professionally for many years and unless you have extreme hydro power the backhoe is not going to harm your tractor. Go with the size recommended for your tractor to much weight hanging off the back end could pose problems but that would be it.

  9. #9
    Elite Member dfkrug's Avatar
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    NorCal
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    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: Backhoe sub-frame

    Quote Originally Posted by horseman8m View Post
    If i do need a frame how far fwd do i need to run the frame, all the way to the front or just to the FEL attachment on the transmission ??
    If your tractor was 10,000# and had a cat 2 3-pt, then using that hitch
    could be OK. But since that is not you, a subframe is the only way to go,
    IMO, from experience.

    There are lots of considerations about subframe design. Mounting to the
    FEL subframe is an excellent way to go, as you can see with good
    designs from Woods, Bradco, and the tractor manufacturers. JD has made
    subframes that mount to the rear axle castings (only), and that has not
    worked so well. You can make your subframe in 2 big sections, or just one.
    The 2-piece subframes with four mounting points are the best, and they
    are getting to be more like what you see on commercial units.

    I think you can make a custom subframe that is superior to subframes
    purchased from the hoe vendors. You can mount the hoe very close in to
    the back of the tractor, which is much better than some of the subframes
    that put the hoe way out back. There are also pros and cons about
    pins versus bolts and how fast mounting will be.

    Look at as many subframes as you can find and borrow from the best ones
    you see.

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