How to Check the Lubrication Condition of a Ball Screw

Date: 2025.09.05 Views: 24

The lubrication condition of a ball screw directly affects its performance and service life. Regular and proper inspection helps prevent failures and reduce wear. Below are common inspection methods and steps:

1.Check the Grease Filling
Inspect whether the grease on the screw surface and inside the nut is sufficient and evenly distributed. Adequate and uniform coverage indicates good lubrication, while dryness, local shortage, or uneven distribution suggests insufficient lubrication.

2.Examine Grease Color and Texture
Normal grease should appear milky white or light yellow, with a smooth texture and no impurities. If the grease darkens significantly, shows black particles, or becomes coarse, it may have oxidized, deteriorated, or been contaminated, and should be replaced promptly.

3.Listen to Operating Noise

During operation, a properly lubricated ball screw should run with low and even noise. If the noise level increases noticeably—especially with sharp metallic sounds or continuous humming—it may indicate inadequate lubrication.

4.Measure Friction Resistance
The friction coefficient of a ball screw should remain low and stable. If friction resistance increases significantly and movement becomes less smooth, lubrication is likely insufficient.

5.Monitor Temperature Changes
Under proper lubrication, the running temperature should remain within a normal range. If the temperature rises abnormally and exceeds the rated working temperature, it suggests poor lubrication and excessive frictional heat.

6.Inspect Dimensions and Accuracy
Use tools such as micrometers, microscopes, or laser measurement devices to check key dimensions and precision. Compare the results with design specifications or manufacturer standards. Excessive wear may also be linked to poor lubrication.

By following these methods, you can comprehensively evaluate the lubrication condition of a ball screw, detect issues in time, and take corrective measures to ensure long-term, efficient, and stable operation.