Capstan Belt Friction Calculator

 This mechanical engineering calculator is used to calculate the the applied tension on the line.


Applied Line Tension (Capstan Equation) Formula:

The capstan equation (or) belt friction equation is also known as Eytelweins formula. It relates the hold-force to the load-force if a flexible line is wound around a cylinder.

Tload = Thold × eμ × ɸ


Tload - applied line tension in N

Thold - resulting force at other side in N

μ - coefficient of friction between rope & capstan material

ɸ - total rope angle in radians