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 Greenlee 7804SB Quick Draw Hydraulic Punch US $150.00 
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 GREENLEE 7906 SB Quick Draw Hydraulic Punch Driver with 1/2" thru 2" conduits US $500.00
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 Knockout Punch Set Hydraulic 12 Ton 6 Dies 4" Metalwoking Driver Set New Tools US $164.95
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 10 Dies 1/2" to 4" Driver Hydraulic Knockout Punch Set 15T Tool Hole Metal Case US $225.95
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 Enerpac SP35 huskie SH-70 Hydraulic punch spanner tool US $19.98
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 Greenlee 7646 Hydraulic Knockout Punch Driver Set 767 Pump in Case US $329.99
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 Red 10 Ton Hydraulic Punch Press w/ 6 Piece Tool Kit US $121.68
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 NITTO KOHKI HYDRAULIC PUNCH & PUMP HS06-1322 US $4,289.00
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 Greenlee Model 1732 C-Frame Hydraulic Bench Mount Punch Complete With Hand Pump US $1,695.00
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 New 3/4” to 2 1/2” Hydraulic Knockout punch driver set w Greenlee 92mm punch US $495.00
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 GREENLEE HYDRAULIC PUNCH SET 1/2"- 3" US $394.87
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 GRENLEE HYDRAULIC KO PUNCH KIT US $275.00
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 15T Driver Hydraulic 10 Dies 1/2" to 4" Knockout Punch Set Tool Hole Conduit Kit US $225.95
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 Greenlee 7646 Hydraulic Knockout Punch Driver US $227.50
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 10 Ton Hydraulic Knockout Punch Driver Kit Hole Tool Hand Pump Conduit 1/2 to 2" US $100.90
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 NEW 10 Ton 14 Piece Steel Hydraulic Punch Driver Kit US $83.98
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 10 Ton 14 Piece Hydraulic Punch Driver Kit:New in Box US $119.95
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 GREENLEE 7806SB HYDRAULIC QUICK DRAW PUNCH, SLUG BUSTER +++ **TESTED GREAT** US $480.00
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 10T Hydraulic Knockout Punch Hand Pump 6 Dies Hole Tool Driver Kit w/ Metal Case US $100.90
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 GREENLEE 7806SB HYDRAULIC QUICK DRAW PUNCH, HOLE SAW KIT++ **TESTED** US $520.00
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 Dottie HPTK1 Hydraulic 1/2 to 2-1/2 Punch Knockout Set US $845.00
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 GREENLEE 7306 HYDRAULIC KNOCKOUT PUNCH DRIVER SET w/ PUNCHES & DIES ,USED US $200.00
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 GREENLEE 7310SB HYDRAULIC KNOCKOUT PUNCH SET 1/2" TO 4" W/BONUS SQUARE DIES US $1,199.99
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 Greenlee Quick Draw Hydraulic Punch Driver with Punches US $500.00
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 Greenlee 7906SB Quick Draw 90 Hydraulic Punch Driver Kit w Conduit Sized Punches US $152.50
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 GREENLEE 7646SB HYDRAULIC KNOCKOUT PUNCH SET AND MUCH MORE **NICE** US $425.00
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 Greenlee Slug-Splitter Hydraulic Punch Set 7307 16pc 1/2" - 2" NEW (S2) US $799.95
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 Brand New Greenlee QUICK DRAW HYDRAULIC PUNCH DRIVERS 7906SB US $295.00
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 Greenlee 7646 Slug Splitter Knockout Punch Die W/ Hydraulic Ram 2 1 1/2 1 1/4 1 US $99.99
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 ENERPAC 3/4"-3" HYDRAULIC KNOCKOUT PUNCH & DIE SET US $245.00
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 GREENLEE HYDRAULIC KNOCK OUT SET 767A WITH SIX PUNCH AND DIES 7/8" TO 2" US $489.00
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 GREENLEE HYDRAULIC PUNCH SET WITH EXTRAS MODEL 7310 767 US $699.99
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 Greenlee 7804SB Quick Draw Hydraulic Punch Driver US $548.00
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 Hole-Punch: Hougen Ogura Electro Hydraulic punch US $1,800.00
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 Greenlee 7306 Handheld HYDRAULIC KNOCKOUT PUNCH SET 1/2 3/4 1 1-1/4 1-1/2 2 3" US $31.00
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 NuLine Hydraulic Ram Punch Driver Set US $875.27
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 GREENLEE 7306 SLUG BUSTER KNOCKOUT PUNCH AND HYDRAULIC SET US $648.00
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 Huskie Model SH-70M Hydraulic Punch w/Dies US $1,250.00
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 TORIN BIG RED JACKS 31 TON HYDRAULIC PUNCH AND PUMP MODEL TRCK060 WITH 3 DIES US $789.00
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 KNOCKOUT PUNCH SET 1/2 - 2" Conduit Hydraulic Knockout Punch Set NEW US $489.00
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 10 TON HYDRAULIC KNOCKOUT PUNCH DIE DRIVER ELECTRICAL US $89.90
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 Greenlee 7310SB Hydraulic Knockout Punch Set US $878.00
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 Yellow 10 Ton Hydraulic Punch Press w/ 6 Piece Tool Kit US $143.10
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 10 ton Hydraulic Metal Hole Punch Press Driver Kit Tool US $143.10
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 Huskie SH-70M coupling nut # H20-16 Hydraulic punch 35 Ton punching puncher NEW US $98.00
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 GREENLEE 767A KNOCKOUT PUNCH Hydraulic Driver Set w/ Case US $399.95
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 Greenlee 767 Hydraulic Hand pump & 746 hydraulic punch ram driver with Work Box US $349.00
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 Greenlee 7646 Hydraulic Knockout Punch Driver Kit, Slug Buster 7646B SlugBuster US $609.00
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 10 ton Hydraulic Metal Hole Punch Hole-driver Kit Tool US $152.10
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 Greenlee 7306 1/2 - 2" Conduit Hydraulic Knockout Punch Set with extra punches US $359.99
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 New 10 Ton Hydraulic Metal Hole Punch Kit W/Dies (22-60.5mm) US $139.99
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 Hydraulic Knockout Punch & Die Set of 6 Sized from 2.5"-4.5" Brand New US $210.00
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 1/2 to 2 Dies 10 Ton Hydraulic Knockout Punch Drive Hole Complete Set Metal Case US $89.90
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 Greenlee 1731 C-frame hydraulic knockout punch 1/2 3/4 US $480.00
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 Enerpac Hydraulic SP-35 Ton replacement punch die set 1/4 3/8 1/2 5/8 3/4 NEW US $479.89
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 Greenlee 7506 1/2"-2" Conduit Size Slug-Splitter Punch Kit: Hydraulic Ram & Pump US $1,703.74
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 10 TON HYDRAULIC KNOCKOUT PUNCH PUMP GREENLEE STYLE US $66.49
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 Used Greenlee Pro-6522-1 C-Frame Knockout Punch with Hydraulic Press US $300.00
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 Hydraulic Knockout Punch Kit 15T Knock Out Driver Tool Hole Conduit Punch Set US $204.00
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 Yellow 15 Ton Hydraulic Punch Press w/ 10 Piece Tool US $314.10
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 Red 10 Ton Hydraulic Punch Press w/ 10 Piece Tool Kit US $314.10
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 Brand New Electric Hydraulic Punch Puncher 900w US $699.99
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 15 Ton 10 Dies Hydraulic Knockout Punch Hole Conduit Driver Set w Matel Case Red US $204.90
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 Enerpac SP35 Hydraulic punch coupling nut 35 Ton punching puncher iron worker US $98.00
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 Hydraulic Knockout Punch Kit 10T Knock Out Driver Tool US $85.00
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 Current Tools 170PM 1/2"-2" Hydraulic Punch Driver Set US $645.00
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 ENERPAC SP-35 Hydraulic Punch Set W/ Case ths US $1,995.00
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 Greenlee no. 1731 One-Shot hydraulic knockout driver C punch w/1" die and pump US $199.00
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 GREENLEE 7310SB HAND PUMP HYDRAULIC DRIVER PUNCH KIT US $1,369.95
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 Hydraulic Knockout Punch Kit 6T Hole Puncher Knock Out US $150.00
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 Huskie SH-70M Hydraulic 35 TON steel punch w die set 3/8 to 7/8 clearance sp-35 US $1,647.00
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 Hougen 75002.5A Ogura Punch-Pro Hydraulic Hole Puncher US $2,455.00
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 Hougen 75003A Ogura 14.85 tons Hydraulic Hole Punch US $2,600.00
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 Hougen Ogura (75004R) 22 tons Hydraulic Hole Punch (75004A) US $2,999.00
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 Hougen Ogura 75005 27.5 tons Hydraulic Hole Punch US $4,395.00
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 Hougen Ogura 75006 34.1 tons Hydraulic Hole Punch US $4,500.00
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 Greenlee 7906 sb quick draw hydraulic punch driver with 1/2 " thru 2 " conduits US $495.00
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 GREENLEE 7804SB / 7806SB QUICK DRAW HYDRAULIC PUNCH DRIVER 1/2" TO 2" +++ US $529.00
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 GREENLEE 1731 Hydraulic Knockout " C " PUNCH in Case US $239.00
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 MAXIS MAX HYDRAULIC PUNCH SET 1/2 TO 2" US $798.00
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 Greenlee 7906SB Quick Draw 90 Hydraulic Punch Kit US $931.19
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 Brand New Greenlee 7906SB Quick Draw 90 Hydraulic Punch Kit US $649.95
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 NEW Enerpac GB Hydraulic Knockout hole punch 1/2-2"USA US $498.00
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Hydraulic Punch
Manual Hydraulic Punch Press by SUNFLUID
Metal stamping process using a wire preform by Herry
Metal parts can be economically fabricated by a metal stamping that comprises preforming a piece of wire to have a shape corresponding to the 2-dimensional configuration of a desired product workpiece, flattening the wire to form a metal blank, and subjecting the metal blank to metal stamping to obtain the desired product workpiece. The process can significantly reduce the amount of scrap material and thereby reduce manufacturing costs.
Metal parts are fabricated by a variety processes such as casting, die casting, and forging. One of the more common processes used for manufacturing metal parts is called metal stamping, which has been in use for over 150 years. Metal stamping,which in general involves taking a flat metal sheet and converting into a shaped article (i.e., a metal part) using a die and press, is a cost-effective process because it permits metal parts to be manufactured at high production rates.
In a conventional metal stamping process, a sheet of metal stock material, such as aluminum, copper, zinc, steel, stainless steel, nickel, titanium, or the like, is introduced into a stamping press such as a mechanical or hydraulic stampingpress. The stamping press has a die means and a punch means which together are used to form blanks from the initial sheet of stock material. These blanks are then subjected to further stamping procedures to form metal parts.
A disadvantage of conventional metal stamping processes is that the formation of the blanks from the initial sheet of stock material and the subsequent further processing of the blanks into metal parts can result in generation of excessiveamounts of scrap material, thereby adding to the cost of manufacture due to both loss of material and cost of waste disposal.
After the preforming stage, the shaped wire or preform is then subjected to a flattening process to achieve a "blank" from which the desired product workpiece will be obtained via a stamping process. The term "wire" as used herein is not to belimited to wires having circular cross sections. Wires of other cross sections such as square, rectangular, etc can also be used. Further, the effective diameter of the wire can vary widely depending on the desired thickness of the metal part and theflattening process. The wire can be flattened by any typical process suitable for applying the requisite pressure to a piece of metal. For example, a shaped section of wire having an effective or nominal diameter of, for example, 3 to 50 mm, preferably5 to 20 mm, can be flattened to a preformed piece of metal having a thickness of, for example, 1 to 30 mm, such as 1 to 25 mm or 8 to 30 mm, preferably 2 to 8 mm, by passage through a mechanical or hydraulic press that applies a pressure of, for example,60 to 1000 tons, preferably 100 to 600 tons. The dimensions and tonnage listed above are merely provided as examples and are not intended to limit the invention.
Thus, the width and thickness of the blank are determined by the selection of the nominal diameter of the wire and the amount of pressure imposed during the flattening process. The length of the blank is determined primarily by the performingstage, by selecting the length of the wire and it's perform shape prior to the flattening step, although the flattening step will also influence the overall length of the blank.
This procedure, in which the blank is made from a flattened preformed wire, results in considerable savings in material costs as the blank obtained from the flattened preformed wire requires far less material than a conventional blank obtainedfrom a metal sheet. In other words, in a conventional procedure blanks are cut and formed from a sheet of flat rolled metal. This procedure inherently imposes material costs due to the resultant scrap material. Yet, in the process according to theinvention, the blank is formed with little or no material loss.
After the preform is converted into a blank, the blank can then be subjected to one or more further conventional metal stamping procedures. In such procedures, the blank can, for example, be "stamped" in a die and press arrangement such as in amechanical or hydraulic press whereby excess material is trimmed from the blank to form a desired product workpiece, either a final product or an intermediate thereof. A typical metal stamping machine is a Minster.RTM. 200 ton mechanical press.
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Article Source: http://www.earticlesonline.com/Article/Metal-stamping-process-using-a-wire-preform/780998
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Frequently Asked Questions...
how to replace fluid on a greenlee hydraulic punch?
I have a greenlee punch thats been sitting around the shop for a long time but it doesn't pump. I was thinking it was out of fluid does anyone know how to add or change the fluid?
Answer:
There should be a reservoir cap/ plug on the end of the pump.
Stand the pump up so that the plug is facing up.
Remove the cap and fill the reservoir full.
If you want to change out the hydraulic oil, remove the fill plug and pour the oil into a waste container.
Put about two cups of new oil in the reservoir, remove the quick coupler from the far end of the hose and then pump the old oil remaining in the hose into a waste container.
Then fill the reservoir full.
Wingman
