What is Unilateral Tolerancing?
When bringing a design from the drawing board to reality, tolerances are a must. Tolerances are essential to ensuring that manufactured parts meet the specified requirements for fit, form, and function.
A tolerance defines the acceptable variation in a dimension or property. Because manufacturing processes are never perfect, some deviation from the nominal size is inevitable, and tolerances are in place to account for this.
Unilateral tolerancing is a type of tolerance that allows variation in only one direction from the nominal size. This means that the actual size of a part can only be larger or smaller than the specified dimension, not both.
This article provides a comprehensive overview of unilateral tolerancing, its applications, advantages, and disadvantages. We’ll also compare unilateral tolerance with bilateral tolerance and guide engineers in choosing the appropriate tolerance type for their specific needs.
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