Connecting holes also need to be punched out when installing cable trunking. This can be done easily and effortlessly at the push of a button using the hole punch (which can also be converted to the recess indent tool)The video recorded the Hole-Punching System in cable tray roll forming line. This Practical Punching Press. If you're wondering what a knockout hole punch is and how to use it correctly, read on. First of all, you need to know that the. Cable tray manufacturing relies on a coordinated production line of specialized machines: a roll forming line shapes the profile, a CNC press brake handles secondary bending, a punch press creates mounting holes and ventilation slots, and a shearing line cuts the finished tray to length. Thanks to. Dear fellow tradespeople, today i'm excited to recommend a super practical, portable electric cable tray hole punch – a cordless hydraulic puncher specifically designed for punching holes in distribution boxes, sinks, and cable trays! whether you're tackling home renovations or professional. At Shree Jagdamba Enterprises, we offer a comprehensive range of Cable Tray Punching Machines that enable efficient and precise punching of cable tray systems.