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How to measure bore and stroke of a hydraulic cylinder?
Release Time :
2025-02-12
Retracted Cylinder Length: Measured from the center of the rod pin to the center of the cylinder pin when the cylinder is fully retracted (closed center).
Extended Cylinder Length: Measured from the center of the rod pin to the center of the cylinder pin when the cylinder is fully extended (open center).
Stroke Length: Measure the extended length of the cylinder minus the retracted length.
Tools for Measuring Bore Diameter
To accurately measure bore diameter, you need precision tools designed specifically for this purpose. Common tools include:
Bore gauges: These tools can accurately measure the inside diameter.
Calipers: Digital or dial calipers can measure the outside diameter of the cylinder barrel, which can help calculate the bore diameter.
Micrometers: Used to measure the thickness of the cylinder barrel, which is subtracted from the outside diameter to determine the inside bore.
Manufacturer's Drawings: Reference materials, such as technical drawings, can help confirm bore diameter by comparing the measurement to the original specifications.
Using the right tools ensures that your measurements are accurate and reliable.
Step-by-step process for measuring bore diameter
Follow these steps to effectively measure the bore diameter of a hydraulic cylinder:
Prepare the cylinder: Clean the cylinder tube to remove any debris or residue that could affect the measurement.
Measure the outside diameter: Use a caliper to measure the outside diameter of the cylinder barrel. Record this value for later calculations.
Determine the wall thickness: Use a micrometer to measure the thickness of the cylinder tube. Take measurements at multiple points to ensure consistency.
Calculate the bore diameter: Subtract two times the wall thickness from the outside diameter. This calculation yields the inside diameter, which is the bore diameter.
Check with a bore gauge: Insert a bore gauge into the cylinder tube to confirm the inside diameter. Adjust the gauge until it fits snugly, then read the measurement.
“Comparing your measurements to the manufacturer’s drawings ensures accuracy and compatibility,” the IBT Fluid Power team states in its guide to measuring hydraulic cylinders.
By following these steps, you can confidently determine the bore diameter of your hydraulic cylinder.
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