Ytj

with i/r the angle between the planes containing curvatures \/R\ and \/R2.

Convex surfaces such as a sphere or roller are taken to be positive curvatures whilst internal surfaces of ball races are considered to be negative.

m and n are also functions of the geometry of the contact surfaces and their values are shown in Table 10.1 for various values of the term a = cos~'(B/A).

Table 10.1.

a 20 degrees

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