GREENLEE 730BB-3/4 Round Punch Unit, 3/4 Inch Size

Greenlee 730BB-3/4 chassis hole punch is a complete unit consisting of a punch, die & draw stud. It comes properly assembled through pilot holes and is used to make clean and accurate holes.

Working Mechanism:

• Place the apparatus against the sheet metal and apply pressure on the sheet.
• As the pressure increases, the sheet deforms until the punch removes the metal.

Features:

• Designed for manual, hydraulic and battery-powered knockout drivers.
• Used for punching holes in mild steel, aluminium, fibreglass or plastic.
• Speed punch knockout draw stud having carbon steel construction with black oxide finish.
• Features centre alignment markings that improve punching accuracy and productivity when making holes.
• Unique slug-buster punch design for creasing the slug as the punch is drawn into the die.

Standards and Approvals:

• RoHS

Frequently Asked Questions:

Q. Why is it important to use apply a chassis hole punch before boring holes in a piece of metal?

A. It is critical to mark the location of the drill bit on the workpiece. The punch tool cuts a recess in the workpiece to guide the drill bit into the desired area.

Q. How can you sharpen a punch?

A. Take a piece of aluminium foil, fold it over several times and punch multiple holes in it. This can be used to sharpen all kinds of punches.