Improve the precision of imported bearings and how to choose imported bearings based on conflicting torque
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Basin Mixer Tap, Bathroom Basin Tap, Double Handle Basin Tap, Single Handle Basin Tap ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.cn-kingsir.comImproving the Precision of Imported Bearings and How to Select Them Based on Conflicting Torque
Imported bearings are widely used in high-precision machinery due to their superior performance. However, maintaining and improving the precision of these bearings is essential for ensuring long-term reliability and efficiency. In this article, we will explore how to enhance the accuracy of imported bearings and discuss the selection process based on conflicting torque.
When using imported bearings in a machine, it's common to observe some degree of radial runout in the spindle. This fluctuation tends to repeat after a certain number of revolutions, which indicates the cyclic rotation precision. If the variation within this quasi-period is large, it reflects poor rotational accuracy. To improve this, proper preloading can be applied, and the bearing can be run-in at near-operational speeds. This process helps reduce irregularities and enhances the overall precision of the system.
For example, a factory that was using 6202/P2 bearings in its precision instruments found the accuracy unsatisfactory. By modifying the rear journal, replacing the inner ring with a raceway, and carefully selecting steel balls grouped by 120° intervals, they managed to significantly improve the axial reversal accuracy. This adjustment led to better performance and met the required standards for the instrument.
In addition to mechanical adjustments, the choice of bearing type plays a crucial role in reducing conflicting torque. Conflicting torque arises from various factors such as rolling friction between the rolling elements and raceways, sliding between the cage and rolling elements, and resistance from lubricants and seals. The level of conflicting torque depends on the bearing type, size, load, speed, and other design parameters.
For applications requiring low conflicting torque, deep groove ball bearings, cylindrical roller bearings, and self-aligning ball bearings are commonly used. Single-row thrust ball bearings are suitable for pure axial loads, while angular contact ball bearings are ideal for combined loads. When dealing with larger distances between contact points, a combination of radial and thrust bearings can help achieve optimal performance.
When selecting imported bearings for low conflicting torque applications, it's important to avoid touch-type sealing mechanisms and instead use oil mist or oil-gas lubrication methods. These techniques minimize internal friction and extend the life of the bearing.
In conclusion, understanding the factors that affect the precision of imported bearings and knowing how to select them based on conflicting torque is essential for achieving optimal performance in high-precision machinery. With continuous advancements in bearing technology, the application of imported bearings will continue to expand across various industries.
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