As an integral mechanical part, the stress state and service life of the shaft sleeve is essential during the usage process. Therefore, the impact model of the directional shaft sleeve under different working conditions was established, the stress distribution and fatigue life of the directional shaft sleeve during the impact process were obtained through simulation. Through the three-dimensional modeling and finite element analysis method, the corresponding boundary conditions were set up, and the simulation results of the directional shaft sleeve under different impact conditions were acquired. The results illustrate that the stress of the unit near the contact surface rapidly magnified when the directional shaft sleeve contacted the guide rail, with its lateral speed increasing instantaneously and stabilizing at 0.029 m/s. Under the premise of meeting the requirements of the life cycle, it is recommended to replace the directional shaft sleeve after every 50 movements.