Question

what is the relation between friction, clearance/tolerance, roughness and mechanical properties in a prismatic joint?

Answer 1

The circular shaft moves linearly, only in longitudinal/axial direction

The shaft has a diameter of D

The clearance between shaft and the bearing is c.

Mechanical properties of shaft and bearing are known (e.g. Young's modulus E, Poisson's ratio ν, yield stress σy, hardness...)

Tribological properties of the surfaces are known (e.g. arithmetical mean deviation roughness Ra)

There is a axial dry friction force between shaft and the bearing (e.g. Coulomb friction )

There are no lateral/radial forces

Answer 2

Prismatic Joint takes the power in whole of the total unity. The likely to be the overthrow effect.