Press Fit Pressure Calculator – Optimize Your Interference Fit Design

Interference fits between a shaft and its components can sometimes be used effectively to minimize the need for shoulders and keyways. This calculator uses the following formula to find the pressure generated with the designed connection. 

This data then can be used to optimize the design of the hub, or can be used to find the minimum force to disengage these parts, or can be used to find the maximum torque this connection can transmit without slippage etc.

 

For calculating minimum force to disengage these parts we can use the following formula

F = f (pmin.A)

Where f is the friction between hub and shaft, A is the area of contact between shaft and hub.

To calculate maximum torque which can be transmitted without slip can be found using following formula

T = F d/2

 

Click Here To Download This Excel Calculator