Bearings for Rocket Pressure Vessels and Fuel Systems

Containing and Transferring Fuel Under Extreme Pressures

A space launch vehicle must contain large volumes of propellant under extreme pressure and deliver them to the engine in a controlled manner throughout flight. RBC Bearings includes dedicated solutions for pressure vessels, propellant handling systems, fluid management, and feed lines within its portfolio of space applications. These components work alongside manifolds, which distribute propellant flow throughout the system, and control valves with their actuators, which regulate fluid flow at the precise moment required during each phase of flight. RBC also manufactures bellows—flexible components that absorb movement and vibration within fuel lines while maintaining a reliable seal. This product line is built using lightweight materials such as titanium, stainless steel, aluminum, and elastomers, combined with specialized manufacturing processes including HVOF coatings, dry-film lubrication, non-destructive testing, heat treatment, and corrosion-resistant cadmium, zinc-nickel, and copper coatings. These applications are part of the same portfolio that supports major rocket systems, including solid rocket boosters, core stages, interstages, stage separation actuation systems, grid fins, and engine gimbals—all of which depend on fluid systems operating with absolute precision throughout every stage of launch. RBC Bearings also provides technical design consulting through its sales engineering team to adapt these pressure and fluid handling systems to the specific requirements of each space program, recognizing that no two launch vehicles share the exact same propulsion architecture. The challenge of containing extreme pressure without leaks or structural failure is not unique to the space industry. At BIOSA, we apply the same engineering principles—on a different scale—to industrial hydraulic and pneumatic systems, where selecting the correct seal, material, and dimensional tolerance is the difference between reliable operation and a costly failure.