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BrandModelRatingBasic DesignPermanent featuresPunch CapacityAngle CapacityShear CapacityShear StyleGood FeaturesDrawbacksCost ($)Weight (lb)Dimensions (Lxwxh)(")Source
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Uni-HydroPro 125125"Scissor" -Cylinder attached to two moving arms. Top moving arm is connected to frame, and Vertical moving center plate. Lower moving arm is attached to shear. Upper and lower stations both cut on cylinder expansion.Flat shear, notcher, punch1256x6x1/21x10, 1/2x20, 1/4x24AngularRelatively compact, has a center compartment for various tools.Scissor could be hard to replicate. Only has 1" x 10" capacity. Smaller center cavity than Scotchman.23,000 new485061.5x41x69.5http://unihydro.com/Model_PRO_125.pdf
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PirhanaP-120120Uses a linkage under machine which multiplies cylinder force and redirects it so the upper arm is moving down upon cylinder expansion. See http://opensourceecology.org/wiki/Ironworker_Prototype_II_Proposal#Analysis_of_Industry_StandardsFlat, angle, notcher1206x6x5/81x12, 1/2x20AngularVery simple design. Easily accessed angle blade, 4 sided so you can have different corner radiuses. 2 different switches.Very Heavy, limited accessory attachment, really long.21,000 used 620090x35x68.5http://www.megafab.com/SingleOperatorIW_P-120.html,http://www.rockanddirt.com/aucsearch?method=search&type=E&catnum=1122&makeovr=PIRANHA&model=P120
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EdwardsJaws V 120T120Vertically moving center. Cylinder attachment unknown. I suspect the cylinder is under the machine and uses a linkage similar to this one to make vertical movement: http://www.youtube.com/watch?v=yt_pTgWeGKA&list=FLfxs6UT9yluJt_Ku8eD8s7A&feature=mh_lolzFlat, angle, multiple rod shears. Punch and notcher may be removable1206x6x1/21x12, 1/2x24VerticalSince all movement is vertical, blade math is easier. Can attach other implements to pumpClosed off, more difficult to attach accessories, more difficult maintenance, HUGE footprint20,850- 1 phase, 18550 3 phase 550060x60x84http://www.edwardsironworkers.com/images/120ton_sell.pdf,http://www.ironworkerllc.com/products/
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Scotchman 12012-24m 120Upper arm attaches to lower arm via simple linkage. Lower arm attaches to cylinder.Punch, Flat Shear1206x6x1/21x12, 1/2x24AngularHydraulic relief valve, big center table for any attachments. Really easy to put them in there. Open design=easy access.Mimicking dual arms could be difficult as extra linkages produces extra failure modes.24,980510077x28x73http://www.scotchman.com/ironworkers/component-tools/12012-24m/, http://www.sterlingmachinery.com/5576/Scotchman+12012+-24+M
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