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What is a hydraulic knockout punch?
Last Updated: 21st June, 2020
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Likewise, what is a hydraulic punch?
Hydraulic punches are designed to perforate metal with round, square or oblong holes. Hydraulic punches may be powered by hand pumps, air/ hydraulic, gas, or electric driven pumps which develop up to 10,000 psi (700 bar).
One may also ask, what is knockout size? A knockout for 1/2" conduit is 7/8", but the outside diameter of a 1/2" EMT fitting is about 3/4". 3/4" knockout is 1-3/32" (close enough to 1-1/8), and O.D. of 3/4" fitting is roughly 1".
Moreover, who invented the knockout punch?
How do you use a knockout tool?
How to Use a Knockout Punch Set
- Drill a hole through the material, using a drill and metal-cutting bit.
- Fit the appropriate size of die onto the draw stud, then insert the draw stud into the pilot hole.
- Thread the desired size of punch onto the draw stud and hand-tighten it to the backside of the material.