Running Clearance
IntroductionSelection Guide Engineering DataBrochure
As a general rule,
close running fits, and often slight interference fits (.0005 in.) are
selected for oscillating motion when minimum starting torque is less
important than the elimination of free play. For constant rotation,
a free-running fit is normally recommended, the exact amount depending
on bearing bore size. A rule of thumb would be 0.0015 inches per inch
of bore ( bearing installed).
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