Gear Pump Displacement Calculator
Find accurate flow and volume values using a gear pump displacement calculator. This tool helps engineers and technicians quickly estimate pump performance, improve system efficiency, and select the right pump size.
Displacement & Flow Calculator
How to Use the Gear Pump Displacement Calculator
Follow these simple steps to use a gear pump displacement calculator:
- Step 1: Enter Gear Dimensions: Input gear outer diameter, inner diameter, and gear width.
- Step 2: Input Number of Teeth (if required): Some calculators use gear teeth data for more precise results.
- Step 3: Enter Pump Speed (RPM): Add the rotational speed of the pump in revolutions per minute.
- Step 4: Select Units: Choose units such as cubic centimeters (cc), liters, or cubic inches.
- Step 5: Click Calculate: The calculator will instantly display displacement and flow rate.
- Step 6: Review Results: Use the output to verify pump capacity and system compatibility.
Tip: Always double-check input values to ensure accurate results.
How to Calculate Gear Pump Displacement Manually
Learn how to calculate gear pump displacement manually using the standard formula.
Formula
Where:
- Do = Outer diameter of gear
- Di = Inner diameter of gear
- Width = Gear face width
Step-by-Step Example:
Given:
Outer Diameter (Do) = 10 cm
Inner Diameter (Di) = 6 cm
Width = 5 cm
Step 1: Square the diameters
Do² = 10 × 10 = 100
Di² = 6 × 6 = 36
Step 2: Subtract values
100 - 36 = 64
Step 3: Multiply by π / 4
(π × 64) / 4 = 50.27
Step 4: Multiply by width
50.27 × 5 = 251.35 cm³
Final Answer:
Gear pump displacement = 251.35 cm³ per revolution
To calculate flow rate:
Example:
RPM = 1000
Flow Rate = 251.35 × 1000 = 251,350 cm³/min
Gear Pump Displacement Conversion Chart
Reference table for common gear pump displacement conversions.
| Cubic Centimeters | Liters |
|---|---|
| 100 cc | 0.1 L |
| 250 cc | 0.25 L |
| 500 cc | 0.5 L |
| 1000 cc | 1.0 L |
| 2000 cc | 2.0 L |
| Cubic Inches | Cubic Centimeters |
|---|---|
| 1 in³ | 16.387 cc |
| 5 in³ | 81.935 cc |
| 10 in³ | 163.87 cc |
| 20 in³ | 327.74 cc |
Frequently Asked Questions (FAQs)
A gear pump displacement calculator estimates the volume of fluid moved per revolution of the pump.
It helps determine flow rate, efficiency, and proper pump selection.
Common units include cubic centimeters (cc), liters, and cubic inches.
Yes. Multiply displacement by RPM to get flow rate.
Key factors include gear dimensions, wear, leakage, and measurement errors.
No. Displacement is volume per revolution, while flow rate depends on speed.
Higher RPM increases flow rate but may reduce efficiency over time.
Yes, but ensure the formula matches the pump design.
It measures actual output versus theoretical displacement.
Use precise measurements and include efficiency corrections if needed.