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Anybody make their own cylinder bench?

Discussion in 'Shop Talk' started by catfixer, Mar 14, 2017.

  1. catfixer

    catfixer Well-Known Member

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    I've started to look at building my own cylinder bench and would love to see guys who have done their own to get some idea.
     
  2. thepumpguysc

    thepumpguysc Senior Member

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    I'v heard of people using "I" beams from the scrap yard.. the "I" cradles the cylinder and a smartly placed bolt will hold the rod to unscrew the bottom rod nut.. Maybe some clamps or wedges inside the channel will keep the cylinder from rotating while removing the top cylinder nut.
     
    Numbfingers likes this.
  3. StanRUS

    StanRUS Well-Known Member

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    I copied local Cat dealer's bench, approximately $2500.00 for steel, double action hydraulic cylinder, hose reel etc plus $1800.00 for hydraulic power pack. You'll also need a overhead jib-crane or you could use a service truck crane to pick up and rotate the cylinder rod-head and cylinder barrel, required when honing and removing the head assembly off of the rod.

    There are 2-3 benches for sale in S. Cal if your interested.
     
  4. Jatreecompany

    Jatreecompany Well-Known Member

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    any pics?
     
  5. fd30

    fd30 Member

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    Check out nut buster online we built a bench similar to theirs ,they have a lot of YouTube video that show it in operation.
     
  6. Zrupp

    Zrupp Member

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    I got the hair brain idea the other day to rig up a mobile service trailer. That would be an enclosed trailer and build a tear down bench inside it. The only bench I have ever used is the WTC small cylinder bench. And we made homemade wrenches out of 1" plate.
     
  7. Zrupp

    Zrupp Member

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    As for a hyd power I was thinking a guy could use the hyd off of the truck. Just plumb in some remote connections.
     
  8. StanRUS

    StanRUS Well-Known Member

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    You can use air powered for the bench and nut buster, capacity 30,000lbs ft. Single action, spring return cylinders. Nut buster requires moving the single acting cylinder from one side to the opposite side, e.g. loosening, than tightening.

    Google Tuxco, they make Cat's current repair benches.

    Building inside of a trailer, NOPE! You need access from above and at least one side.
     
  9. StanRUS

    StanRUS Well-Known Member

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    Found example video

    Pneumatic (air) torque multiplier is manufactured in the UK, 20,000Nm = approximately 14,750lbs ft
    For low volume usage, NO requirement for multi thousand dollar torque multipliers, IMO.
     
    mikebramel likes this.
  10. mikebramel

    mikebramel Senior Member

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    I doubt that 15,000 ft lbs would take that cylinder nut off if it was it's first time
     
  11. StanRUS

    StanRUS Well-Known Member

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    Another example video, fast forward to 2:33...CAT 6V4948 repair bench with Sweeney 8100 torque multiplier, capacity 12,500lbs ft.
    Almost NEW excavator with damaged cylinder rod close to the eye...Dealer guarantees repacking (reseal) in 4hr and re-rod in 8hrs.
    CAT 6V4948 is obsolete, mainly because Sweeney was purchased by Dover (doubled price) than Hydratight again almost doubling price.
     
  12. nowing75

    nowing75 Senior Member

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    I'm looking at hydraulic tork wrenches and thinking of incorporating it into a portable set up.
     
  13. Junkyard

    Junkyard Senior Member

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    Nowing, I've thought the same thing. Also, I've seen a setup using a cylinder and a circle plate with holes in it for the really stubborn nuts. Their wrench quit at 4,300 ft lbs. Mine is good to 7,400 so I don't think I'll need that. Sure would take the work out of the big cylinders!
     
  14. StanRUS

    StanRUS Well-Known Member

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    Tuxco's economy bench, 25,000lbs ft torque with torque read-out gauge. You can fabricate you own hydraulic torque nut buster way cheaper than purchasing a hydraulic torque wrench.
    http://www.tuxco.com/products/HCS-25-LS.pdf
     
  15. StanRUS

    StanRUS Well-Known Member

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    Testing Tuxco 5,000ft lb nut runner, cylinder develops 60,000ft lbs
    https://mulpix.com/post/778217684887297234.html
    DIY, consider single cylinder nut buster requires heavier structural components, e.g. bench frame, supports etc...compared to 'twin cylinder' nut buster. Reason? One 4" diameter cylinder requires twice as much operating pressure per square inch compared to Two 4" cylinders...

    MSD nut buster: retrofitted to local Cat dealer's obsolete Wolf bench
    http://www.ms-d.com/ Few ideas for Catfixer
     
  16. StanRUS

    StanRUS Well-Known Member

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    Exceeded editing time.
    IF both cylinders single or twin setups have the same leverage, e.g. lever are lengths than twin cylinders require 50% less operating pressure. Less pressure requires less horsepower!
    Twin cylinders applying torque to a ratcheting ring also reduce reactive torque by forming a couple; does not require a heavy supporting framework compared to a single cylinder design.