The lifespan of Ball screw is determined by flaking caused by fatigue on the rolling surface. Please check this expected travel distance graph for an approximate lifespan. However, if there is a lot of impact or if proper lubrication and maintenance are not performed, the expected travel distance will be significantly shorter.

The graph is based on the L10 lifespan. L10 lifespan is the lifespan that 90% or more of the total can achieve, expressed in terms of travel distance. When selecting a jack based on lifespan, please select the frame number from this graph using the following procedure.

Expected travel distance (km) = Actual load stroke (m) × frequency of use (times/day) × number of operating days/year × 10^-3 × expected number of years