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    Hydraulic Hammer

    Has anyone installed a hydraulic hammer on a 385A backhoe? I've got lots of big rocks, so it would be easier to bust them up than dig them out.

    Thanks,
    David

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    Big
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    I have never installed one on a 385, but I will tell you that hammers are very very hard on backhoes, mini excavator's, and excavator's. Wears out pins and joints very quickly. A little use is not terrible, so if you come across one for cheap and use it infrequently it shouldn't be a problem. Oh another thing is hydraulic flow. I don't know how much your tractor has but hammers could take allot depending on the model. Good luck!
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    I’ll echo what Big has already said. Hammer/breakers are the death of many machines and need more hydraulic flow than your likely to be able to provide with your machine.

    Not only that, but they are expensive, very heavy(perhaps more than your BH’s capacity), won’t likely fit without modification and to top it all off-as I see them used in heavy highway and bridge work-really only good for breaking up concrete-not natural stone into smaller pieces.

    Rent a bigger machine to do the digging work or rent something with the breaker so you can dig later.
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    personally i wouldnt put one on a small backhoe like that.....you would be better served to get one that hooks on the loader in front .....each has different flow requirements but a skidsteer sized one like i have 500# takes around 15gpm flow

    the effectiveness is directly related to the type of rock you have .....if you have granite or hard limestone you will need a bigger hammer something 1000#+ .....soft limestone/sandstone/ concrete etc it will work fine.....i would suggest trying one on rental before buying one.....skidsteer sized ones are a lot cheaper than they used to be .....great for driving posts etc also

    keep a grease gun handy
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    Quote Originally Posted by DavidL View Post
    Has anyone installed a hydraulic hammer on a 385A backhoe? I've got lots of big rocks, so it would be easier to bust them up than dig them out.

    Thanks,
    David
    If you're attempting to dig & remove large rocks you might want to consider sinking them deeper. I've had a lot of experience over the years with rocks and the very large boulders are likely too much for your 375 to handle.

    Whenever I encounter a huge boulder I usually just excavate a deeper hole next to it and roll it down and in. A couple of feet below the grade is all that's necessary and it will stay put. This method also makes backfilling much easier and you shouldn't need to bring in any extra fill.
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    Quote Originally Posted by Superglidesport View Post
    If you're attempting to dig & remove large rocks you might want to consider sinking them deeper. I've had a lot of experience over the years with rocks and the very large boulders are likely too much for your 375 to handle.

    Whenever I encounter a huge boulder I usually just excavate a deeper hole next to it and roll it down and in. A couple of feet below the grade is all that's necessary and it will stay put. This method also makes backfilling much easier and you shouldn't need to bring in any extra fill.
    Works well for stumps also.
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    Hey guys, thanks for the feedback. I too am concerned that the tractor (3039R) and backhoe may not stand up to the hammer. That's why I asked if anyone else had done it.

    As for digging a hole next to the big rocks and burying them, that wont work as typically there is an even bigger rock next to it.

    When we were building the house the soils engineer came out and classified the site as "fractured rock". I have heard of sandy, clay, loam, etc. but never fractured rock.


    David
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    Hire it out or rent

    There extremely expensive and hard on smallish machines...Digging stumps losened the pins on my mini ex.

    I'd never consider a Hammer.

    If you got a huge project....perhaps buy a used complete unit; skidsteer with hammer or mid to large ex.

    Do what you gotta do and flip it...otherwise rent...They are Brutal.
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    Agreed they are brutal.

    This is the front tilt cylinder ripped out of the top mount of my skid steer from a couple years ago. I’m had used one a couple times before but this job won. Knew someone else that it broke the lift cylinders.
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    Last edited by Herminator; 09-30-2019 at 11:36 PM.
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    Quote Originally Posted by Herminator View Post
    Agreed they are brutal.

    This is the front tilt cylinder ripped out of the top mount of my skid steer from a couple years ago. I’m had used one a couple times before but this job won. Knew someone else that it broke the lift cylinders.

    typical of incorrect use damage....will hammer a hole then use the unit to pry ...the hammer unit makes quite a fulcum and is much stronger than the lift cylinders if they get the point in a bind.....usually breaks a cylinder rod or end
    Last edited by ttazzman; 10-01-2019 at 02:14 AM.
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