Laakerihäviöt

Laakerihäviöt, known in English as bearing losses, refer to the energy dissipated as heat within a rolling-element bearing during its operation. These losses are primarily a consequence of friction between the rolling elements (balls or rollers) and the bearing races, as well as friction within the lubricant.

There are several contributing factors to laakerihäviöt. These include the deformation of the rolling elements and races under load, the shearing of the lubricant film, and the churning of the lubricant by the moving components. The magnitude of these losses is influenced by several parameters such as the bearing's speed, load, internal geometry, lubricant viscosity, and operating temperature.

Understanding and quantifying laakerihäviöt is crucial in mechanical engineering. Excessive bearing losses can lead to increased energy consumption, reduced efficiency of machinery, and premature bearing failure due to overheating. Engineers often aim to minimize these losses through careful bearing selection, proper lubrication, and optimizing operating conditions. Techniques such as using lower viscosity lubricants, reducing bearing preload, and employing advanced bearing designs can help mitigate energy dissipation. The analysis of laakerihäviöt is a key aspect of machine design and maintenance to ensure reliable and efficient operation.