It is well known that ball screws, due to their unique performance characteristics, can convert rotational motion into linear motion and are widely used in CNC machine tools. In addition, ball screw products also have the advantages of high rigidity, long service life, simple maintenance and strong reversibility. However, no matter how all-round a product is, to ensure it can achieve the desired usage effect, it still needs to be maintained in all aspects, among which the maintenance of lubricating oil is also of vital importance. So, how should we choose the lubricating oil for ball screws?

It is generally recommended to use bearing lubricating oil as the lubricating oil for ball screws. If grease is to be used, it is suggested to use lithium soap-based grease.

The selection of oil viscosity is based on the operating speed, working temperature and load conditions. At high speeds, it is recommended to use lubricating oil with a viscosity index range of 32-68 cSt at 40 ° C (ISO VG 32-68)(DIN 51519). At low speeds, it is recommended to use lubricating oil with a viscosity index range above 90 cSt (ISO VG 90) at 40℃.

It is particularly important to note that when used at high speed and under heavy load, forced cooling must be employed to lower the temperature, and cooling oil or water can be introduced into the hollow lead screw to achieve the cooling effect.

After choosing the right lubricating oil according to your own needs, we also need to carry out regular maintenance on the ball screw.

For merchants who choose to use lubricating oil, weekly inspections and decontamination treatments are required. If the lubricating oil reaches a certain level of dirt, it needs to be replaced with new oil.

For merchants who choose to use grease, check every 2 to 3 months to see if there are any dirty debris mixed in. When grease is found to be dirty, remove the old grease in time and replace it with new grease. The most important point is that the grease needs to be replaced every year.