According to some studies, up to 25% of mechanical equipment failures are failures of design. If we apply this to hydraulic cylinders, then as many as one in four hydraulic cylinders are not adequately designed for the application they’re operating in.
So if you have any cylinders that don’t last as they should you may need to address one or more of the following issues:
Ballooned Tubes: Ballooning of the cylinder tube is usually caused by insufficient wall thickness and/or material strength for the cylinder’s operating pressure. Once the tube balloons, the correct tolerance between the piston seal and tube wall is lost, allowing high-pressure fluid to bypass the seal. This high-velocity fluid can erode the seal and localised heating caused by the pressure drop across the piston reduces seal life; the end result of which is: premature failure of the piston seal.
Bent Rods: Bending of cylinder rods can be caused by insufficient rod diameter or material strength, improper cylinder mounting arrangement, or a combination of all three. Once the rod bends, a deforming load is placed on the rod seal. This increases leakage and ultimately results in premature failure of the seal.
Insufficient Bearing Area: If the surface area of the bearing (wear) bands in the gland and on the piston are insufficient to adequately support the side thrust transferred to the cylinder, excessive load is placed on the rod and piston seals. This results in the deformation of the seals, and ultimately, their premature failure.
We will take care of your needs. For more details on hydraulic cylinders, contact Canara Hydraulics today! Not all hydraulic cylinders are made equal. So if you have any hydraulic cylinders that suffer recurring failure, it’s likely that design modifications are required to break the vicious circle of failure and repair.