Greenlee 730TBB Round Punch Un...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$95.46
Greenlee 730TBB Round Punch Unit, Metal Punch and Die Set

Greenlee 730TBB Round Punch Unit, Metal Punch and Die Set

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Model: 730-1/2

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

$95.46
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Greenlee 730TBB Round Punch Unit, Metal Punch and Die Set

The Greenlee 730TBB Round Punch Unit is a complete metal punch set consisting of a punch, die, and draw stud, engineered to deliver clean, fast, and accurate round holes when properly assembled through pilot holes. This round punch unit is offered in a full range of sizes from 1/2" up to 3-1/8", letting electricians and panel builders select the exact opening required for a given job while relying on the same proven punch-and-die design across the entire family. Every size in the lineup is compatible with battery-powered, hydraulic, ratchet, or manual drivers, giving installers flexibility across whatever driver setup is already on the truck or in the shop. Rated for capacity up to 10 gauge mild steel across the sizes offered, the 730TBB family is built for enclosure and panel fabrication work where reliable, repeatable hole-punching performance is essential. It is designed for use on mild steel, aluminum, fiberglass, and plastic, making it a versatile addition to any electrical toolkit regardless of which size you choose.

Key Features

  • Complete Punch Unit: Each size includes a punch, die, and draw stud assembled as a single, ready-to-use unit for round hole punching applications.
  • Size Range: Available in round sizes from 1/2" up to 3-1/8" to cover common conduit, fitting, and hardware entry-point diameters.
  • Shape: Round profile produces clean, consistent, accurate holes when properly assembled through pilot holes.
  • Driver Compatibility: Works with battery-powered, hydraulic, ratchet, or manual drivers for flexible use across different tool setups.
  • Material Capacity: Punches capacity up to 10 gauge mild steel for demanding metal fabrication tasks.
  • Multi-Material Use: Suitable for use on mild steel, aluminum, fiberglass, and plastic surfaces.
  • Fast, Accurate Results: Designed to make clean, fast, and accurate holes when properly installed through pilot holes.

Certifications & Compliance

  • REACH Compliant

Technical Specifications

  • Country of Origin: United States
  • REACH Compliant: Yes
  • Shape: Round
  • Available Sizes: 1/2", 9/16", 11/16", 13/16", 15/16", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/8", 1-3/4", 1-7/8", 2", 2-1/8", 2-3/4", 3", 3-1/8", 3/4"

Typical Applications

  • Electrical Enclosure and Panel Fabrication
  • Mild Steel, Aluminum, Fiberglass, and Plastic Panel Punching
  • Round Knockout Creation for Conduit and Fitting Entry Points
  • Field Use with Battery-Powered, Hydraulic, Ratchet, or Manual Drivers
  • Commercial and Industrial Electrical Installation Work

Why Greenlee?

Greenlee's round punch units are built as complete, ready-to-assemble sets so electricians can produce clean, accurate round holes without sourcing separate components, no matter which size from 1/2" to 3-1/8" the job calls for. Manufactured in the United States and REACH compliant, the 730TBB family delivers dependable performance across mild steel, aluminum, fiberglass, and plastic applications. Its compatibility with multiple driver types makes it a practical, code-conscious choice for professional electrical installation and fabrication work.

Manufacturer Resources

Product Specs

Country Of Origin:
United States
Reach Compliant:
Yes
Product Shape:
Round
list_batch:
GREE-20260923
Product Type:
Knockout Punch
Department:
Electrical
Product Subgroup:
Knockout Punches
Product Size:
25"
Product Material:
Mild Steel
Configuration:
Round
Standards:
REACH Compliant
Product Group:
Electrical Installation Tools

Greenlee 730-1/2 – Frequently Asked Questions

1) What hole sizes can I get in the Greenlee 730 round knockout punch unit?
The Greenlee 730 round punch units cover a trade size range of 1/2 inch through 3-1/8 inch. The individual sizes offered are 1/2, 9/16, 11/16, 3/4, 13/16, 15/16, 1, 1-1/8, 1-1/4, 1-3/8, 1-1/2, 1-5/8, 1-3/4, 1-7/8, 2, 2-1/8, 2-3/4, 3 and 3-1/8 inch. Each one is ordered as its own part number, for example 730BB-1-1/4 for the 1-1/4 inch and 730TBB for the 3-1/8 inch.
2) How thick a panel will a Greenlee 730 punch go through?
Capacity is up to 10 gauge mild steel across the sizes offered. It also works on aluminum, fiberglass and plastic. If you are punching stainless or anything heavier than 10 gauge mild steel, this is not the punch for that job.
3) Do I need a hydraulic pump, or will my battery tool or ratchet wrench drive this punch?
All sizes of the Greenlee 730 round punch unit work with battery-powered, hydraulic, ratchet, or manual drivers, so whatever driver is already on the truck will run them. The punch unit itself ships as punch, die and draw stud; the driver is a separate tool.
4) Does the Greenlee 730 punch set come with the die and draw stud, or do I buy those separately?
Each 730 size is a complete unit: punch, die and draw stud together, ready to assemble. You do not source the die or stud separately. What you still need is a pilot hole in the panel and a driver to pull the stud.
5) Which Greenlee 730 punch size do I use for 1/2 inch and 3/4 inch conduit?
Conduit knockouts are sized by the trade size of the conduit, not the conduit's outside diameter, so a 1/2 inch connector takes the 730-1/2 punch and a 3/4 inch connector takes the 730BB-3/4. The 730 family runs from 1/2 inch up to 3-1/8 inch, which covers the common conduit and fitting entry diameters.
6) Do I have to drill a pilot hole first with a Greenlee 730 knockout punch?
Yes. The 730 round punch unit is drawn through an existing pilot hole; the draw stud passes through that hole and pulls the punch into the die. Clean, accurate results depend on the unit being properly assembled through that pilot hole, so drill or step-bit the pilot before setting up.
7) Can I use a knockout punch on a fiberglass or PVC enclosure instead of a hole saw?
The Greenlee 730 round punch units are rated for fiberglass and plastic as well as mild steel and aluminum, so they will punch a non-metallic enclosure. Punching avoids the chatter and chipping a hole saw can leave in fiberglass. Mild steel capacity is the limiting case at 10 gauge.
8) Are Greenlee 730 punch units made in the USA, and do they meet REACH?
Country of origin is the United States, and the 730 round punch units are REACH compliant. That covers the two items most institutional and government procurement packages ask about on hand tools.
9) Is the Greenlee 730 a round punch or can it do square and D-shaped openings?
Round only. The 730 series is configured as a round punch and die, producing round holes for conduit, fittings and hardware entry points. Square, rectangular or D-shaped openings need a different punch configuration.
10) If I am standardizing punch sizes across a shop, can I buy single sizes of the Greenlee 730 rather than a full kit?
Yes. Every size in the 730 round punch family is its own orderable part number, from 730-1/2 at the small end to 730TBB at 3-1/8 inch, so you can stock only the sizes your panel work actually uses and replace a worn punch or die unit one size at a time.
How fast can I get the Greenlee 730-1/2 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 730-1/2 come with a warranty?
Absolutely. The Greenlee 730-1/2 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 730-1/2?
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 730-1/2 from ZenSupply?
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