Cylinder Rod Eyes & Rod Ends

A rod eye connects a cylinder rod to a mounting pin. AEPSG can quote replacement rod eyes, including threaded eyes and spherical rod ends. You may see these listed as RODEYE in the catalog.

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Female-threaded rod eye with bronze bushing beside a male-threaded spherical rod end — Illustrative product image

How to measure a cylinder rod eye

Measure the hole through the bushing or bearing where the pin fits, and the width between the two faces that sit between the mounting ears. If the bore is worn, provide the pin diameter and any original drawing or markings.

Where to measure

Reference drawings. Verify dimensions on your part or the manufacturer’s drawing.

Eye bore and mounting length

Measure across the center of the pin hole. Measure along the shank axis from the eye center to the mounting face.

Pin width and thread diameter

Measure between the two bearing faces at the pin. For external threads, measure across the crests and check pitch with a thread gauge. For internal threads, confirm size with a known matching thread or thread gauge.

What to send for a rod eye quote

Include the eye bore, width at the pin and distance from the eye center to the mounting face. Identify whether the thread is internal or external, and include its size, pitch and handedness. A photo of both ends helps identify whether the part uses a plain bushing or a spherical bearing.

Send the cylinder model, quantity and any load or movement requirements from the original drawing. For a complete assembly, browse replacement cylinders.

Manufacturer reference Aurora Bearing rod end catalog