Greenlee 28156 Slug-Splitter S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$183.01
Greenlee 28156 Slug-Splitter SC Round Knockout Punch

Greenlee 28156 Slug-Splitter SC Round Knockout Punch

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Model: 28156

In Stock (leaves warehouse same day if ordered before 3pm ET)

$183.01
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Greenlee 28156 Slug-Splitter SC Round Knockout Punch

The Greenlee Slug-Splitter SC Round Knockout Punch is a round conduit-size punch engineered for use with battery-powered, hydraulic, and ram drivers. This punch is part of the Slug-Splitter SC family, available in conduit sizes ranging from 3/4\" through 1-1/2\", and is built to cut clean, precise round knockouts in electrical enclosures and panels, with capacity through 10 gauge stainless steel. Electricians and panel builders rely on this punch style to create fast, accurate openings without the debris and clean-up associated with traditional drilling or hole-saw methods, making it a go-to solution for enclosure fabrication and field modification work.

Key Features

  • Trade Size Range: Available in conduit sizes from 3/4\" through 1-1/2\" to match standard knockout openings in enclosures and panels.
  • Round Shape: Produces a clean, round knockout suited for conduit fittings and connectors.
  • Slug-Splitter SC Design: Splits the slug during the punching operation for easier removal and a cleaner finished hole, reducing clean-up time on the job.
  • Material Capacity: Rated for capacity through 10 gauge stainless steel, supporting use on heavier-duty enclosure material where standard punches may struggle.
  • Driver Compatibility: Compatible with battery-powered, hydraulic, and ram drivers for flexible use across different job-site setups and crew equipment preferences.
  • Sub-Brand: Part of the Slug-Splitter® SC punch line from Greenlee, built for reliable, repeatable knockout performance across the entire size range.

Technical Specifications

  • Sub Brand: Slug Splitter® SC
  • Country of Origin: United States
  • Shape: Round
  • Available Sizes: 3/4\", 1\", 1-1/4\", 1-1/2\"

Typical Applications

  • Electrical Panel and Enclosure Fabrication
  • Conduit Knockout Cutting in Stainless Steel Panels
  • Battery-Powered, Hydraulic, and Ram Driver Punching Operations
  • Commercial and Industrial Electrical Installations
  • Custom Enclosure Modification and Retrofit Work

Why Greenlee?

Greenlee's Slug-Splitter SC Round Knockout Punch line delivers dependable, precise knockout performance for professionals who demand clean round cuts in demanding stainless steel enclosure applications, across a full 3/4\" through 1-1/2\" size range. Manufactured in the United States, these punches are built to hold up to repeated use with battery-powered, hydraulic, and ram drivers on the job site. Choose Greenlee Slug-Splitter SC punches for a trusted knockout solution engineered for code-compliant, professional electrical panel work.

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Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
GREE-20260923
Product Type:
Knockout Punch
Series:
Slug-Splitter SC
Configuration:
Round
Country Of Origin:
United States
Department:
Electrical
Product Subgroup:
Knockout Punches
Product Material:
Stainless Steel
Product Group:
Electrical Installation Tools

Greenlee 28156 – Frequently Asked Questions

1) Will the Greenlee Slug-Splitter SC punch cut through a stainless steel enclosure?
Yes. The Slug-Splitter SC round knockout punch is rated for capacity through 10 gauge stainless steel, which covers most heavier-duty stainless panels and enclosures as well as ordinary painted steel boxes. That rating is the deciding spec if you are modifying a washdown or food-service enclosure, where a standard punch often stalls.
2) What conduit sizes does the Greenlee 28156 Slug-Splitter SC punch family cover?
Four conduit trade sizes: 3/4 inch (28156), 1 inch (28158), 1-1/4 inch (28160) and 1-1/2 inch (28162). Each is ordered as its own punch by size, so pick the trade size of the connector or fitting you are landing in the panel.
3) Can I use this knockout punch with my Milwaukee or Greenlee battery hydraulic driver?
The Slug-Splitter SC punches are built for use with battery-powered, hydraulic, and ram drivers, so they suit a cordless knockout tool, a hand pump hydraulic setup, or a ram-and-cylinder arrangement. Confirm the draw stud thread on your driver matches the punch set you order.
4) What is the difference between a Slug-Splitter punch and a regular knockout punch?
A standard punch shears out a full disc of metal that can bind in the punch and has to be worked free. The Slug-Splitter SC design splits the slug as it punches, so the piece drops out easily and the finished hole needs less cleanup. On a panel where you are cutting a dozen holes, that is where the time goes.
5) Should I use a knockout punch or a hole saw for conduit openings in a live panel?
A punch is the better choice inside an enclosure. It shears the hole in one stroke with no chips or filings spraying across busbars and terminations, where a hole saw throws metal debris and can walk on sheet metal. The Slug-Splitter SC produces a round hole sized to standard conduit knockouts, so connectors seat without filing or deburring.
6) I need to stock punches for a crew doing stainless enclosure work. What should I order?
Order by trade size, one punch per size you expect to cut: 28156 for 3/4 inch, 28158 for 1 inch, 28160 for 1-1/4 inch, 28162 for 1-1/2 inch. All four carry the same 10 gauge stainless capacity and work off the same battery, hydraulic, or ram driver, so a crew can standardize on one driver and add sizes as the job demands.
7) Are Greenlee Slug-Splitter SC punches made in the USA?
Yes, the Slug-Splitter SC round knockout punches are manufactured in the United States. That matters on public and institutional jobs carrying domestic-sourcing requirements on tooling purchases.
How fast can I get the Greenlee 28156 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Greenlee 28156 come with a warranty?
Absolutely. The Greenlee 28156 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Greenlee 28156?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Greenlee 28156 from ZenSupply?
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