Greenlee 7646 Hydraulic Knockout Set 4 Piece 10 Gauge

Product Description

The GREENLEE 7646 is a 4-piece hydraulic knockout set designed for punching clean, round holes in mild steel up to 10 gauge. It operates using hydraulic force, allowing a licensed electrician to drive precise, burr-minimized knockouts through electrical enclosures, junction boxes, panel covers, and conduit bodies. The set covers a hole diameter range of 1/2 inch to 2 inches, making it suitable for conduit entries from 1/2 inch trade size through 2 inch trade size. The included 746 hydraulic ram delivers the force needed to complete each knockout cycle without manual hammering. This set is built for field and shop use by electrical contractors and maintenance electricians.

The 7646 is used in residential, commercial, and light industrial electrical work wherever conduit entries must be added to metal enclosures. Typical applications include adding knockouts to load centers, pull boxes, meter bases, and equipment enclosures made from mild steel sheet up to 10 gauge thickness. The included step bit allows the installer to drill the pilot hole required before the punch and die are seated. The set arrives in a plastic carrying case for organized storage and transport on the job site.

Key Features

• Hydraulic operating method reduces physical effort and speeds up knockout cycles compared to hand-driven sets
• Round punch shape covers hole diameters from 1/2 inch to 2 inches
• Rated for mild steel up to 10 gauge maximum capacity
• Includes two draw studs: 20963 (3/8 inch x 7.9 inches) and 2113B (3/4 inch x 8 inches) for different punch sizes
• Includes 36613 step bit for pilot hole drilling and 746 hydraulic ram
• Stored in 30206 plastic case for job site portability and component organization

Compatibility

Designed for use with mild steel sheet metal enclosures and panels up to 10 gauge thickness. Compatible with standard conduit trade sizes within the 1/2 inch to 2 inch punch hole diameter range.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements for conduit entry preparation. De-energize all equipment and verify lockout/tagout procedures are in place before punching knockouts in any live enclosure. Use the included step bit to drill the required pilot hole before threading the draw stud through and seating the punch and die. Do not exceed the rated 10 gauge mild steel capacity, as punching harder or thicker materials can damage the tooling.