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Describe the difference between a clearance fit and an interference fit in engineering limits and fits. - Leaving Cert Engineering - Question c - 2022
Question c
Describe the difference between a clearance fit and an interference fit in engineering limits and fits.
Worked Solution & Example Answer:Describe the difference between a clearance fit and an interference fit in engineering limits and fits. - Leaving Cert Engineering - Question c - 2022
Step 1
Clearance Fit
Answer
A clearance fit allows two assembled parts to move freely relative to each other. In this configuration, the largest permissible shaft diameter is always smaller than the smallest diameter of the corresponding hole. This difference is known as clearance, which ensures that there is enough space between the two components for movement and assembly.
Step 2
Interference Fit
Answer
An interference fit, often referred to as a press fit, is a technique where two tightly fitting mating parts are joined together. In this fit, the smallest permitted diameter of the shaft exceeds the largest diameter of the hole, creating a forceful connection. This results in a joint that is held together by friction once the parts are pressed together, providing a strong and secure assembly.