Friction

FIGURE 2 Coefficient of friction versus ZN/P (Ref. 1).

*1 bar = 105 Pa. For a discussion of bar, see "SI Units: A Commentary" in the front matter.

further, a situation of full fluid film lubrication prevails.

A general rule of thumb is that ZN/P should be 30 (0.44) or greater for a fluid film to be generated. Note that as ZN/P continues to increase beyond the full film demarcation, the coefficient of friction rises, but at a relatively low rate and generally remains in regions of low coefficients of friction.

Z = 30 cP ( 0.03 Pa • s ) N = 150 rpm P = 200 lb/in2 ( 13.6 bar) ZN 30 X 150

Survival Treasure

Survival Treasure

This is a collection of 3 guides all about survival. Within this collection you find the following titles: Outdoor Survival Skills, Survival Basics and The Wilderness Survival Guide.

Get My Free Ebook


Post a comment