Pressure in Tons for Steel : Diameter of hole Thickness to be punched of sheet in inches x in inches x 80
Pressure in Tons for soft metal like Brass etc. : Diameter of hole Thickness to be punched of sheet in inches x in inches x 65
Example : Find the pressure required of punching a hole 2" in diameter through 1/4" in steel stock Pressure in Tons : 2x1/4" x 80-40Tons
Example : Find the pressure required for punching a rectangular hole 2" x 1.1/2" through 1/4" steel stock
Standard Accessories :