When is it necessary to install a stop tube?

Installing a stop tube is necessary when the rod has a long extension with some side load. A stop tube acts as a guide to prevent the piston rod from bending or buckling under load, which can occur when there is an extended length. This is especially critical in applications where side loads are present because they can create unbalanced forces on the rod. Without adequate support, the integrity of the hydraulic cylinder can be compromised, potentially leading to mechanical failure or reduced operational efficiency.

In scenarios with longer rods, the increase in moment and potential for misalignment means that any side loading can exacerbate these issues. The stop tube effectively limits the potential for the rod to deflect excessively, thereby maintaining proper alignment and function of the actuator. It is a vital component in hydraulic systems where precision and reliability are essential, particularly in dynamic applications where loads may vary significantly.