Question

In an interchangeable assembly, a shaft of size ${25.000}^{\begin{array}{c}+0.040\\ -0.010\end{array}}mm$ mate with holes of size ${25.000}^{\begin{array}{c}+0.030\\ -0.020\end{array}}mm$. The maximum interference (in microns) in the assembly is

• A. 30
• B. 10
• C. 20
• D. 40

Answer 1

The correct option is C 20

$\text{Size of shaft =}{25.000}^{\begin{array}{c}+0.040\\ -0.010\end{array}}mm$

$\text{Size of hole =}{25.000}^{\begin{array}{c}+0.030\\ -0.020\end{array}}mm\text{.}$


$\text{Maximum interference}$

$=0.040-0.020=0.020mm=20\mu m$