# Press Fit Pressure Calculator, Formula, Press Fit Pressure Calculation

## Press Fit Pressure Calculator:

Enter the values of press fit force, Fp(N) and contact area, CA(m2)­ to determine the value of Press fir pressure, P(Pa).

 Enter Press Fit Force: N Enter Contact Area: m2 Result – Press Fit Pressure: Pa

## Press Fit Pressure Formula:

Press fit pressure is the pressure generated between two mating components, typically a shaft and a hole, when they are forced together in an interference fit.

This pressure ensures that the components remain securely joined without the need for additional fasteners or adhesives.

The press fit relies on the elastic deformation of the materials, which generates a normal force at the interface, leading to frictional resistance.

This friction holds the components together and can withstand operational loads without slipping.

A greater press force applied during assembly results in a higher press fit pressure, leading to a tighter fit.

A smaller contact area between the components concentrates the press force, leading to a higher press fit pressure. This is why sharp corners or small contact surfaces can increase the pressure.

Press fir pressure, P(Pa) in Pascals is calculated by dividing the press fit force, Fp(N) in Newtons by contact area, CA(m2)­in square metres.

Press fir pressure, P(Pa) = Fp(N) / CA(m2)­

P(Pa) = press fit pressure in Pascals, Pa.

Fp(N) = press fit force in Newtons, N.

CA(m2)­ = contact area in square metres, m2.

Press Fit Pressure Calculation:

1. A cylindrical shaft is pressed into a hole with a press fit force of 5000 N. The contact area between the shaft and the hole is 0.01m2. Calculate the press fit pressure.

Given: Fp(N) = 5000N, CA(m2)­ = 0.01m2.

Press fir pressure, P(Pa) = Fp(N) / CA(m2)­

P(Pa) = 5000 / 0.01

P(Pa) = 500000Pa.

1. A press fit pressure of 750,000 pascals (Pa) is generated by a press fit force of 3000 Newtons (N). Find the contact area.

Given: Fp(N) = 3000N, P(Pa) = 750000Pa.

Press fir pressure, P(Pa) = Fp(N) / CA(m2)­

CA(m2)­ = Fp(N) / P(Pa)

CA(m2)­ = 3000 / 750000

CA(m2)­ = 0.004m2.