How can we extend the service life of ball screw bearings?
Published on:
2025-10-24 11:22
Ball screws often use thrust angular contact ball bearings to withstand heavy axial loads while also ensuring the accuracy of the screw system. Efficient equipment operation requires the durability and precision of ball screw bearings, a crucial factor in bearing selection for many manufacturers. So, how long do ball screw bearings last? The following article will explain.
What is the service life of ball screw bearings?
Under normal use conditions, the theoretical life of a good quality ball screw bearing can reach 10,000 to 50,000 hours. However, in actual application, the life of the ball screw bearing may be shortened due to various factors. The influencing factors are as follows:
1. Load size. The bearing capacity of ball screw bearings is limited. Long-term overload operation will accelerate bearing fatigue pitting and shorten its life.
2. Lubrication condition. The screw bearings must also be fully lubricated to extend their service life. If the grease is insufficient or the lubricant deteriorates, it will also cause the bearings to fail early.
3. Working environment: The ball screw system has high requirements for bearing precision. When dust and iron filings in the environment are mixed in, the precision environment will be destroyed, resulting in increased bearing wear.
4. Installation accuracy. Thrust angular contact ball bearings are generally used in duplex or triplex combinations. If the bearings are eccentric or improperly preloaded, the bearings will be subjected to uneven force, local stress concentration, and their service life will be reduced.
5. Bearing quality: If the bearings used in ball screws are of poor quality or incorrectly selected and cannot adapt to harsh working environments, they are prone to damage.
How to extend the service life of ball screw bearings?
1. Do not blindly use low-priced bearings. Choose high-precision, high-quality ball screw bearings to ensure basic performance.
2. Correctly select the ball screw bearing model and type. If necessary, you can ask our bearing technical team for selection support, and strictly follow the requirements to select the appropriate preload force and installation method.
3. Maintenance is also very important. Regularly add or replace grease to maintain good lubrication. For highly polluted environments, it is recommended to use ball screw bearings with sealed structures to effectively prevent impurities from entering.
The service life of ball screw bearings is not fixed and is affected by many factors, so it is necessary to analyze the specific situation. Especially for high-precision bearings, more attention should be paid to the details of use, otherwise it is easy to damage the bearing accuracy and reduce the service life.
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