Greenlee 730bb-2-1/2 Round Punch Unit 2-1/2 Inches

Product Description

The GREENLEE 730bb-2-1/2 is a standard round punch unit designed to cut clean, accurate holes in mild steel, aluminum, fiberglass, and plastic. The unit ships complete with punch, die, and draw stud, so no additional hardware is required for a standard installation. It is compatible with battery-powered, hydraulic, ratchet, and manual drivers, making it a flexible option across jobsite conditions. Electricians and contractors use this punch unit when knockouts must be made quickly and precisely without distorting the surrounding material.

This punch unit is suited for panel work, enclosure fabrication, and conduit entry applications in both residential and commercial settings. When properly assembled through a pilot hole, it delivers a burr-minimized knockout that meets the dimensional requirements for standard fittings. The 2-1/2 inch size covers common conduit and fitting entry points encountered in electrical and industrial installations.

Key Features

• Complete unit includes punch, die, and draw stud — ready to use out of the box
• Cuts mild steel, aluminum, fiberglass, and plastic
• Compatible with battery-powered, hydraulic, ratchet, and manual drivers
• 2-1/2 inch round knockout for standard conduit and fitting entry points
• Produces clean, accurate holes through pilot-hole assembly method

Compatibility

Designed for use with battery-powered, hydraulic, ratchet, and manual punch drivers that accept standard draw stud tooling.

Installation Notes

Installation is typically performed by licensed electricians or qualified contractors. Before punching, de-energize and lock out any enclosure or panel that may carry live voltage. Drill a pilot hole sized to the draw stud diameter before assembling the punch and die. Follow NEC guidelines for conduit entry spacing and enclosure integrity after the knockout is complete.

Technical Specifications

• Type: Standard round punch unit
• Size: 2-1/2 inches
• Application: Punch mild steel, aluminum, fiberglass, and plastic

Standard Information

• Brand: GREENLEE
• Manufacturer Part Number: 730bb-2-1/2