A common question.. Does my machine have enough tonnage to
punch the hole my job requires?
Lucky for you, we have a tonnage calculation to answer that
question!
Let’s say your machine has a 50-ton capacity and you need to
punch a 5/8” round hole through ½” A-36 mild Steel. Using the formula LTS/2000
we can calculate the tonnage.
L= Length of cut in inches (use circumference [π x diameter]
for rounds and perimeter for other shapes)
T= Thickness of material in inches
S= Ultimate shear strength in pounds per square inch (PSI)
|
1.963 X .500 X 60,000
|
=
|
29.45 tons
|
|
2000
|
This means to punch a 5/8” hole in ½” thick material it will
take 29.45 tons, since you have a 50-ton machine there’s enough tonnage to
punch the hole.
Punching different materials means there are different shear
strengths. To keep it simple we have come up with multipliers to calculate
tonnage when punching different types of material.
If you’re punching the same application but with a different
material type, a quick way to calculate the tonnage is by multiplying the
tonnage by the multiplier in the chart below.
Example with stainless steel: the shear strength would be
70,000 PSI and from the chart below we see the multiplier is 1.17. Therefore,
we take the tonnage from before times 1.17:
29.45 tons X 1.17 =
34.46 tons required to punch stainless
If you need assistance, please contact our Green Team 7 am
to 6 pm☺
