It would help if you never underestimate the importance of your cylinder rod. The rod is not just the object transmitting the force from the cylinder’s piston but also the interface between that cylinder and your machine. Before you can correctly select and then design the piston rod, you must understand the potential areas of failure. Some of the common piston rod problems on hydraulic cylinders are listed out below. Also, you can get in touch with us, a leading manufacturer of hydraulic cylinders in India.
- The rod is improperly sized for the application: This problem occurs at the design stage, so be sure you accurately calculate retraction force with an understanding of differential cylinders. The rod takes up area on the piston, reducing the cylinder’s force in retraction, causing the cylinder to retract with less force than it extends.
- Corrosion of the rod thread: When you machine off the entire crust of the rod thread, you no longer have chrome. Because chrome protects from corrosion, the rod thread is now left to the elements. If your cylinder operates in humid environments or around harmful chemicals, corrosion or rust may weaken the rod end over time. Choose the appropriate alloy for your application.
- Rod scratches leading to seal damage. Rod scratches rarely affect the strength of the cylinder, especially if they’re minor. However, dents and scratches in the rod rub against the rod wiper and seal, damaging it over time. Using only rod material made from induction hardened steel will prevent dings on the surface.
Although industrial hydraulic cylinders rarely run into objects or other machinery, mobile machinery is susceptible to such accidental damage. Our experts at our hydraulics company in India will guide you better on these issues. Even the massive rods used on excavators are no match for the power of which the boom, arm and bucket cylinders are capable.