The lifespan of SJB series ball screw spiral elevators is mainly determined by the lifespan of ball screws and components such as worm gears and worms; We mainly verify the lifespan of ball screws. Worm gears and worm gears may experience wear, but their lifespan is generally longer than that of ball screws. The expected lifespan L10 of a ball screw is the operating distance that 90% of ball screws can reach or exceed before metal material fatigue failure. The unit is in millions of millimeters. The expected lifespan L10 of ball screws is not a guarantee of quality, and the expected lifespan should be maintained correctly, free of contaminants, and lubricated correctly.
If the expected life of the ball screw needs to be higher than 90%, multiply the expected life by the following coefficient to calculate the standard ball nut life formula:
The calculation of Fm weighted average load is as follows:
L10=(C / Fm)3xS
L10: Theoretical lifespan kilometers km Fm: Weighted average load N
C: Rated dynamic load N S: ball screw lead mm
95%: L10x62% 96%: L10x53% 97%: L10x44%
98%: L10x33% 99%: L10x21%
According to different environmental temperatures (high or low), different lubricant grades will be adjusted.
◆ Can provide lubricating grease for the food industry
For devices that are used year-round, the lubricating grease will lose its lubrication performance after 5 years, and possible impurities may worsen the normal working condition. It is recommended to thoroughly clean and re grease the worm gear box within 5 years
It is recommended to use a grease supply tank to provide continuous automatic lubrication inside the box of the spiral elevator.
Regularly lubricate the lubrication plate inside the tail cover of the SJB ball screw elevator.
The nut and screw should be lubricated with grease every 200 hours of operation, or lubricated appropriately according to the working environment