Greenlee 28157 Slug-Splitter SC Round Knockout Die

Greenlee 28157 Slug-Splitter SC Round Knockout Die

The Greenlee Slug-Splitter SC® round knockout die family is engineered for self-centering accuracy when punching clean round openings in electrical enclosures, panels, and boxes. This die line is available in sizes from 3/4" through 2" (including 1", 1-1/4", and 1-1/2"), giving electricians and panel fabricators a consistent, repeatable punching solution across common conduit and connector openings. Designed for use with battery-powered, hydraulic, and ram-style knockout drivers, these dies are rated to punch through material up through 10 gauge stainless steel, making them a dependable choice for demanding commercial and industrial electrical work where accuracy and durability matter. Whether you're preparing openings for conduit fittings, connectors, or enclosure hardware, the Slug-Splitter SC® design keeps the die centered on the pilot hole for faster setup and cleaner cuts.

Key Features

• Size Range: Available across a family of round knockout sizes from 3/4" up to 2", covering standard conduit and fitting hole requirements.
• Self-Centering Design: Slug-Splitter SC® construction speeds setup and improves punch accuracy by keeping the die centered on the pilot hole.
• Broad Driver Compatibility: Works with battery-powered, hydraulic, and ram knockout drivers for flexible use across job-site tooling.
• Heavy-Duty Capacity: Rated to punch through material up to 10 gauge stainless steel, supporting demanding enclosure and panel fabrication.
• Round Shape: Produces a clean round knockout suited to standard conduit and connector openings.
• Series: Part of the Slug Splitter® SC line, built for repeatable performance across the size range.

Technical Specifications

• Sub Brand: Slug Splitter® SC
• Country of Origin: United States
• Shape: Round
• Size Range: 3/4", 1", 1-1/4", 1-1/2", 2"
• Material Capacity: Up through 10 gauge stainless steel

Typical Applications

• Punching Round Knockouts in Electrical Enclosures and Panels
• Commercial and Industrial Electrical Installations
• Stainless Steel Enclosure Fabrication
• Conduit and Fitting Opening Preparation
• Use with Battery-Powered, Hydraulic, or Ram Knockout Drivers

Why Greenlee?

Greenlee's Slug-Splitter SC® knockout dies are built for self-centering accuracy and heavy-duty capacity, punching through material up through 10 gauge stainless steel with consistent, clean round holes across the full 3/4" to 2" size range. Manufactured in the United States, this die family is engineered for compatibility with battery-powered, hydraulic, and ram drivers, giving electrical professionals dependable, repeatable performance on demanding enclosure and panel work no matter which size the job calls for.