Hydraulic actuator rod guided in bore is sealed by first annular joint subject to fluid pressure and second scraper joint

摘要

The actuator rod (8) is guided in a bore (7) passing through a head (4) which closes the actuator cylindrical body (1). It is also guided inside the body by a guide block (9) screwed on the rod end allowing axial circulation of the hydraulic fluid. Sealing of the rod passage in the bore is ensured by a first annular joint (23) subjected to the fluid pressure and by a second scraper annular joint (24) which prevents fluid traces having passed the first joint from exiting.