SKF Bearing Hydrostatic Saver
Source: Bearing Network | Date: February 18, 2014
Hydrostatic bearings are an essential component in high-precision machinery, especially in SKF bearings. One of the key elements that ensure their efficient operation is the hydrostatic bearing saver, which helps maintain stable oil pressure and improve performance. These savers come in two main types: fixed and variable. Fixed savers use a constant resistance to control the flow of lubricating oil. Common examples include capillary and orifice-type savers. A capillary saver is typically made by cutting an injection needle to a specific length and welding it onto a probe. This design relies on the hydraulic resistance created as oil passes through a narrow passage, which results in a controlled pressure drop. Orifice-type savers, on the other hand, are usually constructed from brass or 45 steel and use small holes (d) to create resistance. The advantage of these savers is their simplicity and reliability. However, because the resistance cannot be adjusted, they may not perform optimally under varying loads. When a static pressure shaft is loaded, the pressure difference between oil chambers becomes crucial for maintaining stability. The oil seal gap is determined by this pressure difference, and the spindle must maintain a certain displacement after loading. This displacement can affect the rotational accuracy of the bearing, which is why variable savers are often used in high-precision applications. Variable savers allow for adjustable resistance, enabling better adaptability to different operating conditions. This feature helps reduce spindle displacement and improves overall rotation accuracy, making them ideal for demanding environments where precision is critical. In addition to these technical details, understanding the proper maintenance and usage of hydrostatic bearings is equally important. Regular inspection, correct lubrication, and monitoring of pressure levels can significantly extend the life of the bearing and enhance its performance. For more information on bearing technology, you might also want to explore topics such as the "four attention points" in bearing use, dynamic performance analysis of deep groove ball bearings, and non-contact sealing techniques for rolling bearings. This article was originally published on China Bearing Network. For more content related to bearings and their applications, visit our website regularly. Previous: How to Repair Static Pressure Bearings in Grinding Machines Next: Application of Plastic in Rolling Bearings (Part 5)
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