What are the types of fits, and can you explain them?

Question

Accepted Answer

Fits refer to the tolerances and clearances between mating parts in engineering, crucial for assembly and function.

Clearance Fit: Allows for space between parts, e.g., a shaft that fits into a hole with some room for movement.
Interference Fit: Parts are tightly fitted together, e.g., a bearing pressed onto a shaft, requiring force to assemble.
Transition Fit: A compromise between clearance and interference, e.g., a pin that can be either pressed in or easily removed.
Examples: Clearance fits are used in sliding applications, while interference fits are common in high-stress connections.

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