Interference fit
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An Interference fit (sometimes called a Press fit) is a fastening between two parts which is achieved by friction after the parts are pushed together, rather than by any other means of fastening. For metal parts in particular, the friction that holds the parts together is often greatly increased by compression of one part against the other, which relies on the tensile and compressive strengths of the material(s) the parts are made from. Typical examples of interference fits are the press fitting of shafts into bearings, or bearings into their housings, and the attachment of watertight connectors to cables. An interference fit also results when pipe fittings are assembled and tightened.
The fit specifically refers to the relative sizes of the object and the aperture into which the object should be placed.
Formulae exist to enable the specification of various strengths of fit, such as Loose Fit, Light Interference Fit and Interference Fit.
[edit] External links
- Diagram of an Interference fit
- Interference fitting - formulae for calculating clearance reductions when using interference fits for bearings on shafts and in housings
- Interference fit watertight cable connector
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This industry-related article is a stub. You can help Wikipedia by expanding it. |
| Fit types |
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| Interference fit | Clearance fit |
| Fit specifications: |
| RC fit | LN fit | FN fit |
