4 Inch Chassis Punch

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HiTekRedNek Guru Join Date: Oct 2006 Location: 44.56024"N 15.307971E Posts: 7889 Good Answers: 265	4 Inch Chassis Punch 10/31/2019 1:49 PM
	I recently remember seeing a contractor using a 4" chassis punch powered by a 3/8 battery powered drill.It went through the electrical panel like butter. The last type of chassis punch I used was many years ago,and it took a lot of effort to punch a 4 inch hole in sheet metal. This punch was geared super low,and the drill had no problem turning it. I figure some type of planetary gear set,as it was not very large or heavy. I don't remember the name or manufacturer,and I cannot find anything like it on the web. Thanks in advance for any and all help on finding this tool. __________________ "A man never stands so tall as when he stoops to help a child." "Never argue with a stupid person.They will drag you down to their level and beat you with experience" "Homo homini lupus"
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SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 33321 Good Answers: 1810	#1 Re: 4 inch chassis punch 10/31/2019 2:00 PM
	Might be one of these... Here's a nice one...not cheap @ $1800. https://coptool.com/mechanical-knockout-sets-for-cordless-drilldrivers/ __________________ All living things seek to control their own destiny....this is the purpose of life
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HiTekRedNek Guru Join Date: Oct 2006 Location: 44.56024"N 15.307971E Posts: 7889 Good Answers: 265	#2 In reply to #1 Re: 4 inch chassis punch 10/31/2019 6:49 PM
	I think that is it.It is really amazing to see it breeze through 10 gauge SS with no problem. It is far more time consuming to do it with manual or hydraulic punches. For a busy commercial/industrial electrical contractor,this could pay for itself in a short time in labor savings. Thanks for the link! __________________ "A man never stands so tall as when he stoops to help a child." "Never argue with a stupid person.They will drag you down to their level and beat you with experience" "Homo homini lupus"
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Brave Sir Robin Guru Join Date: May 2007 Location: Annapolis, Maryland Posts: 7875 Good Answers: 453	#5 In reply to #2 Re: 4 inch chassis punch 11/01/2019 1:35 PM
	Greenlee also makes these sorts of tools as well. https://www.mscdirect.com/browse/tnpla/60060365?cid=ppc-google-New+-+Lighting+%26+Electrical+-+PLA_sA9v7kv1E___164110844547_c_S&mkwid=sA9v7kv1E\|dc&pcrid=164110844547&rd=k&product_id=60060365&gclid=EAIaIQobChMIh6iG4sTJ5QIVAsDICh3jCw3-EAYYAiABEgIsuvD_BwE https://www.amazon.com/Greenlee-LS100L11SB4-Battery-Powered-Conduit/dp/B00QKX3XPK
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EV1guy2004 Power-User Join Date: Jan 2008 Location: here Posts: 109 Good Answers: 5	#3 Re: 4 Inch Chassis Punch 11/01/2019 1:36 AM
	This is what we use, Based on the metal thickness and AIC rating, we are limited to about two inched on the 6 ton unit, we have not purchased the 10 ton, but the shears and crimper are COOL https://commerce.ilsco.com/documents/PDF/TechnicalDrawing/IVTB.pdf
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phph001 Guru Join Date: Oct 2009 Posts: 1460 Good Answers: 30	#4 Re: 4 Inch Chassis Punch 11/01/2019 7:05 AM
	What you need is one of these I'm told that one of its last tasks was producing pressings for Concorde aircraft.
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phoenix911 Guru Join Date: Aug 2007 Posts: 23588 Good Answers: 419	#6 Re: 4 Inch Chassis Punch 11/02/2019 8:01 AM
	Like a knockout? Greenlee has a good share of the market as far as ease,... here’s a 4” and with hydraulics makes it quite easy. __________________ “ When people get what they want, they are often surprised when they get what they deserve " - James Wood
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