Greenlee 745H-2-1/2 Knockout Punch Unit 2.914 in Round

Product Description

The GREENLEE 745H-2-1/2 is a round knockout punch unit designed for cutting clean, precise holes in electrical enclosures, panel boxes, and conduit entry points. It produces a 2.914-inch diameter hole through mild steel up to 10 gauge and is compatible with battery-operated and hydraulic knockout drivers. The punch set includes the die, draw stud, and punch, providing everything needed to complete the knockout in a single kit. Licensed electricians and electrical contractors rely on this type of tooling for fast, burr-minimizing hole production during panel rough-in and enclosure work.

This knockout punch unit is suited for residential and commercial electrical work where consistent, code-acceptable conduit entry holes are required in steel enclosures and junction boxes. The 2.914-inch hole diameter accommodates standard 2-1/2-inch conduit trade size fittings. It is used with compatible GREENLEE battery or hydraulic punch drivers in both new construction and retrofit applications where drilling alone would not produce a clean, round opening.

Key Features

• Produces a 2.914-inch diameter round knockout hole in a single operation
• Rated for mild steel up to 10 gauge maximum capacity
• Compatible with battery-operated and hydraulic punch drivers
• Kit includes die, draw stud, and punch for complete out-of-box use
• Steel punch material for durability under repeated hydraulic load cycles

Compatibility

Designed for use with GREENLEE battery-operated and hydraulic knockout drivers that accept standard draw stud tooling. Verify driver compatibility with the specific driver model before use.

Installation Notes

Installation should be performed by a qualified electrician following applicable NEC guidelines for conduit entry and enclosure work. De-energize all circuits and confirm the enclosure is isolated from power before beginning any knockout operation. Secure the workpiece to prevent movement during punching, and use proper eye and hand protection when operating hydraulic or battery punch equipment. Do not exceed the rated material gauge capacity of the punch to avoid tool damage or incomplete cuts.