Painting Roller,Mini Foam Paint Roller,Mini Paint Roller,Microfiber Dynamic Paint Runner Roller Jiangmen Nichiyo Decorative Material Co.,Ltd. , https://www.nichiyopt.comAnalysis of the Functional Characteristics of NSK High-Speed Precision Spindle Bearings
NSK high-speed precision spindle bearings are essential components in high-speed machine tools. The precision of each part within the electric spindle unit is typically measured in micrometers, with run-out usually ranging between 1 to 3 micrometers. The stiffness of the spindle is generally between 100 to 300 N/μm, which means that the inherent accuracy errors and deformations of the spindle components are relatively small.
However, when the machine operates at high speeds, the bearing generates significant heat. For example, the temperature rise of the 80BNR10S bearing can be quite high, leading to thermal deformation. This thermal error is often much greater than the original precision error or deformation, directly affecting the pre-load condition of the bearing. As a result, it impacts the bearing's stiffness and the overall machining accuracy of the electric spindle. In severe cases, it may even lead to thermal locking, causing damage to the spindle.
The heating issue in the electric spindle not only reduces its performance but also lowers its reliability during operation. Therefore, conducting a thorough thermal analysis of the 80BNR10S bearing and understanding the thermal characteristics of NSK bearings is crucial for ensuring the stability and reliability of high-speed precision spindles.
High-speed precision angular contact ball bearings are among the most commonly used types in machine tool spindle units. This article focuses on this type of NSK high-speed precision spindle bearing, making the thermal characteristics analysis and calculation of such systems highly relevant and important for further development and application.
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Analysis of the function characteristics of NSK high speed fine spindle bearing
Source: China Bearing Network | Time: 2013-06-03