1. What is a Hydraulic Cylinder Fluid Capacity Calculator?

Definition: This calculator determines the fluid volume required to fully extend a hydraulic cylinder based on its cross-sectional area and stroke length.

Purpose: It helps hydraulic system designers and maintenance technicians properly size reservoirs and estimate fluid requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_{cyl} \) — Fluid capacity (cubic inches)
• \( A_c \) — Cross-sectional area of cylinder bore (square inches)
• \( L_s \) — Stroke length (inches)

Explanation: The formula calculates the volume of the cylindrical space the piston moves through during full extension.

3. Importance of Fluid Capacity Calculation

Details: Accurate fluid capacity calculations ensure proper hydraulic system operation, prevent fluid starvation, and help in selecting appropriate reservoir sizes.

4. Using the Calculator

Tips: Enter the cylinder's cross-sectional area and stroke length in inches. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find the cross-sectional area?
A: For circular cylinders, use \( A_c = \pi \times r^2 \) where r is the bore radius, or \( A_c = \pi \times (D/2)^2 \) where D is bore diameter.

Q2: Does this account for the rod volume?
A: No, this calculates total cylinder volume. For net fluid displacement, subtract the rod volume from the result.

Q3: What units should I use?
A: The calculator uses inches for consistent units (in² for area, in for length, in³ for volume).

Q4: How does this relate to hydraulic system design?
A: The result helps determine minimum reservoir size (typically 2-3 times cylinder capacity) and pump flow requirements.

Q5: Can I use this for double-acting cylinders?
A: Yes, but calculate both extend and retract volumes separately as they'll differ due to the rod volume.