The knowhow of Cylinder Heads and Caps.

What Are Cylinder Heads and Caps?

• The end seals: The cylinder head (or gland) and cap function as the end seals for the cylinder barrel. They contain pressurized hydraulic fluid, preventing leaks and ensuring proper system function.
• Connection points: Hydraulic fluid enters and exits the cylinder through ports located on the head and cap.
• Rod gland: The cylinder head features a specialized seal arrangement around the piston rod. This prevents fluid leaks even as the rod extends and retracts.

Why They Matter

• Pressure control: A hydraulic cylinder relies on the head and cap to maintain a tight seal, enabling the necessary pressure buildup for effective operation.
• Contamination protection: The head, especially the rod gland component, safeguards the cylinder’s internal components. It blocks dirt and debris from entering and causing potential damage.

Additional Things to Know

• Materials: Heads and caps are typically made of metal to withstand the same high pressures as the cylinder barrel. Seals can be composed of rubber, polyurethane, or other suitable materials depending on the specific fluid and operating environment.
• Removable: They are often designed for easy removal, facilitating maintenance tasks, and the replacement of internal cylinder parts.