OEM Replacement Hydraulic Cylinders: What to Measure Before Ordering

Measure the mounting faces, not just the length

A replacement will only interchange if the cap and rod end mounting dimensions match, including the pin or clevis bore diameter, the pin centres, the boss thickness and the thread or weld detail. Measure these on the old cylinder and on the machine if possible.

Bore, rod and stroke

Measure the rod diameter at the exposed section and the piston bore where the cylinder is extended. Stroke is the distance between the fully retracted and fully extended positions, measured with the same reference points each time.

Check the pressure and the duty cycle

A replacement that meets the bore but not the working pressure will not last. Provide the system relief setting and the cycle rate so the seal and rod speeds are appropriate.

Send the oil type and temperature

Seal material, coating and lubricant must match the fluid. Provide the fluid type, the ambient temperature and the maximum oil temperature in service.

What we return

From those measurements we return a dimensioned drawing with the mounting detail, the bore, stroke, rod, pressure rating, the seal kit and the delivery time, together with a firm quotation.