Greenlee 28166 is a top - notch slug - splitter die crafted for punching electrical conduits. The conduit sizes' hole diameter matches the outside diameter of US conduit sizes. For instance, a 1/2' conduit size punch creates a 7/8' hole. The corresponding punch is the 28165, and there are suitable draw studs: 29452 for Hyd. Drivers 7646, 7625 and 12099 for the Ratchet Driver 1904. This heavy - duty punch can effortlessly penetrate 10 gauge (3.5 mm) stainless steel. Its unique slug - splitting design and tool - steel construction make light work of punching mild steel and stainless steel of the same gauge. The self - centering feature aligns itself on the pilot hole, eliminating the need for crosshairs or die alignment marks. The distinct punch profile also splits slugs, facilitating easy removal. With heavy - duty dies and stainless - steel draw studs, it offers a long service life. It has excellent abrasion resistance for punching fiberglass and plastic. It can be operated using a battery, hydraulic, or high - leverage ratchet driver. And it's patent - pending.
Using the Greenlee 28166 is quite straightforward. First, make sure you've selected the right draw stud for your driver, whether it's a hydraulic or ratchet one. Place the punch on the pilot hole, and thanks to its self - centering design, it will align itself automatically. Then operate the driver to start punching. When punching, you'll notice that the unique design splits the slugs, making them easy to remove. Be aware that this tool is only to be used with battery, hydraulic, or high - leverage ratchet drivers. Don't try to use it with other types of drivers. For maintenance, after each use, clean the punch and die to remove any debris. Keep it in a dry place to prevent rust. Also, check the draw studs regularly for any signs of wear or damage, and replace them if necessary. With proper use and maintenance, your Greenlee 28166 will serve you well for a long time.
