HYD cyilnder on a apron
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  1. #1
    Join Date
    Aug 2011
    Location
    North Central Mo
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    366

    HYD cyilnder on a apron

    Has any one ever put a cylinder on a apron brake. I just got a very old 8' metal brake and it didnt have any weights to help the apron or even look like it ever did. I cant swing the apron by my self. I cant find a brand on it and i have never saw one like it before its very old. Its all cast very heavy but its very compact.

  2. #2
    Join Date
    Mar 2018
    Location
    Puget Sound, Washington
    Posts
    17

    Re: HYD cyilnder on a apron

    Quote Originally Posted by Old Doug View Post
    Has any one ever put a cylinder on a apron brake. I just got a very old 8' metal brake and it didnt have any weights to help the apron or even look like it ever did. I cant swing the apron by my self. I cant find a brand on it and i have never saw one like it before its very old. Its all cast very heavy but its very compact.
    That’s a vague description but imi tools designed for hand operation don’t play well with hydraulics for very long. Not designed for that kind of force and can fail catastrophically.

  3. #3
    Join Date
    Oct 2015
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    PNW
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    446

    Re: HYD cyilnder on a apron

    apron brake? never heard it called that, had to google to be sure you were taling about a box/pan brake.

    sure you could, hydraulic would probably be over kill and easy to damage the brake. i think a compressed air cyclinder would be cheaper, provide plenty of force and be easier to limit force to prevent tool damage. i've thought about foot opperated air cylinder controls on my brake would be awesome. one on each clamp and on the apron would make single operator use allot quicker and easier.
    General Contractor
    Commercial Industrial & Custom Residential
    Specializing in all things Metal

  4. #4
    Join Date
    May 2010
    Location
    ct.
    Posts
    1,197

    Re: HYD cyilnder on a apron

    Makes me wonder how it was operated before.
    Could you add counterweights instead of adding
    fluid power? Can you post a pic.?
    Miller a/c-d/c Thunderbolt XL
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  5. #5
    Join Date
    Jun 2018
    Location
    Florida
    Posts
    417

    Re: HYD cyilnder on a apron

    I never saw an apron brake without counterweights, sounds like some parts are missing. I would rig up some weights before I messed with hydraulics but I have seen it done with pneumatic cylinders.
    ***********************

    CR

  6. #6
    Join Date
    Aug 2011
    Location
    North Central Mo
    Posts
    366

    Re: HYD cyilnder on a apron

    This is a very heavy brake i would see how much force 2 men could do and go a little more. Air would not be my first thought its not very smooth and not cheap. I cant see were it ever had counter weights. It also is missing any way to raise the clamp the last guy use a prybar.

  7. #7
    Join Date
    Mar 2011
    Location
    McGregor, Iowa
    Posts
    93

    Re: HYD cyilnder on a apron

    I would think hydraulic would be a lot for any apron brake. Google and youtube apron brakes. Quite a few had a gear and rack mechanism to run the apron up. Pictures would be good to see how sturdy a brake you have. I've never heard of one without counterweights to balance the apron out. It sounds like it might be missing a few parts.

  8. #8
    Join Date
    Aug 2011
    Location
    North Central Mo
    Posts
    366

    Re: HYD cyilnder on a apron

    I cant see were there ever was anything bolted on that is missing. I had a Heavy 12' and this 8 ' is alot heavyer it would take 2 guys to lift the apron then i dont know if they could bend any thing.I am not talking about a 3 foot Harbor Freight brake. If it takes 2 guys to lift the apron how much counter weight would i need 200-300 hundered pounds?
    Last edited by Old Doug; 06-03-2019 at 08:55 PM.

  9. #9
    Join Date
    Mar 2011
    Location
    McGregor, Iowa
    Posts
    93

    Re: HYD cyilnder on a apron

    I'm just generalizing its like a older Chicago apron brake, I really don't know what you have. When you said apron brake I assumed it wasn't a harbor freight finger brake already. I figured its solid and no fingers at all. Does it have a capacity chart on it? If I were to try anything I would try air first with flow controls to slow the cylinder down. That way you could figure out the cylinder mounting points and cylinder length for a hydraulic one later if you wanted to. Air is cheaper and cleaner than buying a hydraulic unit. A 2 inch 100 psi air cylinder is around 300 lbs of lift. A 2 inch 2000 psi hyd cylinder is about 6000 lbs of lift. Maybe just air as an assist? if you stepped on a pedal air would assist you hand raising the apron to bend something? If it has rod handles out the front, sometimes I have seen counterweights mounted on them with a bracket clamp to point them backwards for balance. I'm curious to know what kind of brake it actually is?

  10. #10
    Join Date
    Jun 2018
    Location
    Iron Station, NC
    Posts
    13

    Re: HYD cyilnder on a apron

    Quote Originally Posted by Old Doug View Post
    I cant see were there ever was anything bolted on that is missing. I had a Heavy 12' and this 8 ' is alot heavyer it would take 2 guys to lift the apron then i dont know if they could bend any thing.I am not talking about a 3 foot Harbor Freight brake. If it takes 2 guys to lift the apron how much counter weight would i need 200-300 hundered pounds?
    200 pounds wouldn't be out of the ballpark. I had a 10' x 14 gauge Chicago and the weights were roughly 100# a piece, and about 2' above the apron with it down. No way I could lift the apron without them myself, but it was well balanced with them on.

  11. #11
    Join Date
    May 2011
    Posts
    372

    Re: HYD cyilnder on a apron

    I used a 10' apron a l long time ago. It had say 8" balls for counterweights on each side on about 2' rods.

    Your brake should have spots on each end where a pipe or solid round can slide into for the counterweight.

    Sent from my SM-G960U using Tapatalk

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