Fluid power
Pneumatic & Hydraulic Components replacement guide
Identify cylinders, pumps, valves, fittings, hose assemblies, and air-preparation components from markings and interface data.
Evidence boundary. Fluid-power replacements require the full circuit context. The library will not promote a component as interchangeable from bore, port, or thread alone.
What to capture01
Manufacturer, series, and full part numberRecord this before searching for a substitute.
Bore, stroke, rod, ports, and mountingRecord this before searching for a substitute.
Pressure, flow, speed, and dutyRecord this before searching for a substitute.
Hose, tube, fitting, and thread standardRecord this before searching for a substitute.
Fluid, seals, temperature, and safety requirementsRecord this before searching for a substitute.
What must match02
Pressure and flow limitsConfirm it against the original equipment, duty, and source documentation.
Mounting, stroke, and envelopeConfirm it against the original equipment, duty, and source documentation.
Port/thread and hose compatibilityConfirm it against the original equipment, duty, and source documentation.
Seal and fluid compatibilityConfirm it against the original equipment, duty, and source documentation.
Controls, response, and contamination sensitivityConfirm it against the original equipment, duty, and source documentation.
Common searches03
What cylinder replaces this one?
How do I identify a hydraulic valve?
What thread is this fitting?
Can I replace a pneumatic component by bore and stroke?
Authoritative starting points04