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DesignMay 9, 2026|3 min read

Clearance

Clearance is a core engineering term. Definition, usage notes, and a practical example.

Definition

Clearance is the positive space between two parts.

Why it matters

It can be required for rotation, sliding, assembly, and thermal expansion.

How it is used

In a design check, first define the relevant load, dimension, material, or flow condition. Then interpret this term by its role in the formula and compare it with limits.

Example

If the shaft is smaller than the hole, the difference is clearance.

Formulas

No formulas added for this term.