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  1. #1
    Platinum Member bdog's Avatar
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    Mar 2004
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    Texas
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    John Deere 4440

    Default Bushing? Need a weld on hole

    I have a piece of equipment that has a dump bed. The bed is held on by three 7/8" pins. The two on the back form a hinge and the one in the front is connected to a hydraulic cylinder.

    I have removed the bed and want to build another bed for it that will utilize the same mounting points. The new bed will be rather heavy and the machine is on rough terrain all the time. I could torch the holes but they would not be perfect and there would be slop and i am afraid the bed would bounce around and wear out the pins. Is there some sort of weld on bushing that is maybe 3/8-1/2 thick with a 7/8 hole that I could weld on to the mounting brackets for the new bed? I have seen things like this but I don't know what they are called and if you can buy them off the shelf or if the ones I saw were a custom fab type deal.
    1980 John Deere 4440 with duals
    2006 John Deere 322 compact track loader

  2. #2
    Elite Member
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    May 2012
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    Knoxville, TN
    Tractor
    Bobcat CT225

    Default Re: Bushing? Need a weld on hole

    Two options. 1) Sometimes, the manufacturer will sell replacement weld-in bushings, since it is understood that they are a common wear item. Get an exploded parts list for your equipment and see if there is a part number for the bushings. Or just ask a dealer to check for you. 2) DOM tubing is available in specific ID and wall thickness. It is readily adaptable to being made into bushings. However, you may need to ream out the ID on a lathe or drill press, since it is usually either dead-on or slightly under its nominal ID. In other words, if you need to fit a 7/8" pin, buy DOM tubing with 7/8" ID and then ream it out. If you are going to weld on the bushings, you want to make them a bit more oversized than you would if you weren't going to weld on them. The machine shop that did my reaming said only 3 or 4 mils might be appropriate if I wasn't going to weld, but they used 8 mils because I'm going to weld.

    For cutting the holes, I recommend cutting a slightly oversized hole, then put the pin in the piece and slide the bushing over the pin. Then tack the bushing in place. This will make sure that the bushing will perfectly line up when the welding is finished.

  3. #3
    Elite Member
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    Bobcat CT225

    Default Re: Bushing? Need a weld on hole

    DOM Steel Tube (Drawn Over Mandrel)

    That site has 1 1/4" OD x .375" wall thickness DOM tubing, which if my math is correct, leaves 7/8" ID. It's $17 / foot, plus shipping, so it ain't cheap, but it'll do you.

  4. #4
    Veteran Member Kernopelli's Avatar
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    Oct 2006
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    Carterville, Illinois
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    Mitsubishi MTE2000D, Dig It 258 Backhoe

    Default Re: Bushing? Need a weld on hole

    DOM is great for bushings. I have also welded shaft collars in place, like for the type of repair you are doing. I have taken the set screws out before and put grease zerks in place of them....not sure it helps much but hey, can't hurt. SpeeCo Shaft Set Collar - Mills Fleet Farm
    Darryl

  5. #5
    Veteran Member
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    Aug 2004
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    Caldwell Co. NC
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    2006 Kama554; 92 Belarus 250AS
    2006 Kama 554, 92 Belarus 250AS, Bombardier Outlander Max 400.

  6. #6
    Platinum Member bdog's Avatar
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    John Deere 4440

    Default Re: Bushing? Need a weld on hole

    Thanks guys. Headed to TSC to see if they have the shaft collars in stock. Looks like the cheapest and quickest option. The DOM would work also but more costly.
    1980 John Deere 4440 with duals
    2006 John Deere 322 compact track loader

  7. #7
    Elite Member
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    Bobcat CT225

    Default Re: Bushing? Need a weld on hole

    Quote Originally Posted by bdog View Post
    Thanks guys. Headed to TSC to see if they have the shaft collars in stock. Looks like the cheapest and quickest option. The DOM would work also but more costly.
    Are you sure they're more costly? Looking online, shaft collars with 1" (or thereabouts) ID run $5-$10. And they're only about 1/2" thick. For $17, plus about $15-20 shipping (sadly) so total cost let's say $40, you can get a 12" length of DOM which will make 24 of the same piece, or $1.66 each. Also, with the DOM, you can cut the bushing to any thickness that you want.

    If you were to buy more than 12" of DOM, the cost would go down even further, as the site charges about an extra $10 for the first foot to cover their cutting and handling.

  8. #8
    Platinum Member bdog's Avatar
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    John Deere 4440

    Default Re: Bushing? Need a weld on hole

    The 7/8" ones are $6.99 for a 2 pack at TSC. I need 6 of them. $21 at the store down the road and hopefully they have them and I get them today.

    If I needed more the DOM would make sense.
    1980 John Deere 4440 with duals
    2006 John Deere 322 compact track loader

  9. #9
    Veteran Member bigtiller's Avatar
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    central Iowa
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    JD 2720

    Default Re: Bushing? Need a weld on hole

    Would the bushings used on a 3 point hitch to go from category 1 to 3 work?
    HAVE FUN

    Life is easier when you plow around the stumps.


    2720

  10. #10
    Elite Member SPIKER's Avatar
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    Ohio, Jeromesville, Ashland County
    Tractor
    Jinma 284

    Default Re: Bushing? Need a weld on hole

    Try calling around to local Machine Shops and Welding supply/Steel Suppliers for some of the DOM, we bought a LOT of it and make Hinges with it and usually reamed them out to a Brass Bushing Size pressed in the Brass Bushing then drill thru for Zerk fitting. Some times there is a bit of distortion on the DOM when welding and the BRASS Bushing will be easily re-reamed if need be using hand reamer.

    For the low moving dump bed probably just add Zerk hole & over ream slightly. Be sure to align grease hole so that it will be accessible when down or UP and that full travel does not sheer off the zerk.



    Mark
    I may remember why I went to the other end of the shop, I'm just afraid once I get there I'll forget how to get back!

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