Note:

1) K_CIt is under the preload force F_pFor 0.1C_aThe axial load F is 0.3C_aTheoretical calculation value of time;

2) When the axial load F is not equal to 0.3C_aWhen,

In the formula

K_cIt is the stiffness value in the table;

　　3）The normal working environment temperature range is ± 80 ℃;

4) Special requirements should be raised when placing an order.