Excavator Parts EX30 Tensiong Oil Cylinder Assembly

The Hitachi EX30 Tensioner Cylinder Assembly is an important part of the excavator’s undercarriage system that is used to maintain standard tension on the tracks.The following is its brief introduction:

- Structural components: it usually consists of a cylinder, piston, seals, hydraulic oil lines, springs and so on.These parts work together to push the piston through the pressure of hydraulic oil, thus realizing the function of tensioning the tracks.
- Working Principle: The hydraulic pressure is used to push the piston of the cylinder outward, and the force generated acts on the crawler to keep it in proper tension.When the hydraulic oil in the hydraulic cylinder is pumped to the inside of the cylinder, the pressure of the hydraulic oil pushes the piston, thus realizing the tensioning of the crawler; on the contrary, by releasing the hydraulic oil, the degree of tensioning of the crawler can be adjusted.
- Function: To keep the tracks under proper tension and prevent the tracks from being too loose or too tight.Suitable track tension can reduce the problems of track jumping and deflection, avoid track derailment and improve the service life of track, meanwhile, it can ensure the stability and efficiency of the excavator’s traveling, and reduce the wear and tear of other parts of the chassis such as supporting wheel, driving wheel and drag chain wheel.