Greenlee 730PBB-3-34 Round Punch Unit, 3-3/4"

Greenlee 730PBB-3-34 Round Punch Unit, 3-3/4"

The Greenlee 730PBB-3-34 Round Punch Unit is a complete standard round metal punch unit sized at 3-3/4 In, built for electricians and panel fabricators who need clean, fast, and accurate holes in enclosures and equipment housings. Each unit ships as a full assembly consisting of punch, die, and draw stud, so there is no need to source components separately — simply assemble the unit through a properly sized pilot hole and drive it through the workpiece. This round punch unit is designed to work with battery-powered, hydraulic, ratchet, or manual drivers, giving crews flexibility to match the tool to the job at hand, whether that is a bench-mounted hydraulic press or a portable manual driver used in the field. Manufactured in the United States, the 730PBB-3-34 is engineered to punch mild steel, aluminum, fiberglass, and plastic, making it a versatile addition to any panel-building or enclosure-fabrication toolkit.

Key Features

• Trade Size: 3-3/4 In round punch for standard enclosure and panel penetrations.
• Complete Assembly: Includes punch, die, and draw stud as one ready-to-use unit — no separate components to source or match.
• Round Shape: Standard round profile produces a clean, consistent hole suitable for conduit, fittings, and hardware installation.
• Driver Versatility: Compatible with battery-powered, hydraulic, ratchet, or manual drivers for use across a range of job-site setups.
• Multi-Material Punching: Rated for mild steel, aluminum, fiberglass, and plastic, covering the most common enclosure materials.
• Pilot-Hole Assembly: When properly assembled through a pilot hole, the unit produces clean, fast, and accurate holes with minimal burring.

Technical Specifications

• Country of Origin: United States
• Size: 3-3/4 In
• Type: Standard round punch unit
• Shape: Round

Typical Applications

• Electrical Panel and Enclosure Fabrication
• Punching Mild Steel and Aluminum Cabinets
• Fiberglass and Plastic Enclosure Modification
• Conduit Entry and Hardware Mounting Holes
• Field and Bench Panel-Building Work

Why Greenlee?

Greenlee's round punch units are engineered as complete, ready-to-assemble kits so electricians and panel builders get clean, accurate holes without sourcing mismatched components. Made in the United States and rated to punch mild steel, aluminum, fiberglass, and plastic, the 730PBB-3-34 delivers the reliable, code-ready performance professionals expect from Greenlee's metalworking tool line.