paineliitokset

Paineliitokset, often translated as press fits or interference fits, are mechanical joints created by forcing two components together with a precise interference. This interference, the difference in size between the inner and outer diameters of the mating parts, creates a strong clamping force that holds the parts together without the need for fasteners like screws or rivets. The tightness of the fit is crucial for the joint's strength and function.

The principle behind paineliitokset relies on the elastic deformation of the materials. When the inner part (e.g., a shaft) is pressed into the outer part (e.g., a bearing housing), the outer part expands slightly, and the inner part is compressed. Upon release, the inherent springiness of both components generates a significant radial force, effectively locking them in place.

These joints are common in various engineering applications where a secure and reliable connection is required. Examples include attaching gears to shafts, installing bearings in housings, and assembling electrical connectors. The advantages of paineliitokset include their high strength, resistance to vibration and shock, and a clean, smooth appearance as no external fasteners are visible. However, proper design and manufacturing tolerances are essential to ensure a successful press fit. Too little interference may result in a loose joint, while too much can cause excessive stress, material deformation, or even fracture.