Hydraulic Flow cc/rev → GPM
cc/rev
Hydraulic Flow 6.205 GPM
RPM
%
Quick Picks for Pump Displacement
Hydraulic system design also depends on pressure, oil viscosity, temperature, leakage, and component ratings.
Hydraulic pump flow
Hydraulic Flow Calculator
Estimate hydraulic pump flow from displacement, RPM, and volumetric efficiency for power-unit comparisons.
Instant Results Engineering-Grade Precision Clear Assumptions
Hydraulic Pump Displacement GPM = (cc/rev x RPM x efficiency / 1000) x 0.264172
cc/rev 18 Pump Displacement
cc/rev x RPM
rotor displacement x rpm efficiency
GPM 6.205 Hydraulic Flow
Displacement and shaft speed create hydraulic flow.
Result 18 cc/rev = 6.205 GPM
Hydraulic flow is estimated from pump displacement, shaft speed, and volumetric efficiency.
Calculator
Hydraulic Flow Calculator
The hydraulic flow calculator estimates hydraulic pump output from displacement, shaft speed, and volumetric efficiency. Key entities include hydraulic pumps, hydraulic power units, cylinders, motors, valves, hoses, Parker, Eaton, Bosch Rexroth, Danfoss, ISO 4413, pressure, oil viscosity, and temperature.
Flow Rate
Hydraulic Flow Rate Calculator
A hydraulic flow rate calculator converts pump displacement and RPM into LPM or GPM so cylinders, hydraulic motors, control valves, filters, coolers, and accumulators can be compared on the same flow basis.
Calculate
Calculate Hydraulic Flow
To calculate hydraulic flow, multiply pump displacement by pump speed and volumetric efficiency. Then convert cubic centimeters per minute into LPM or GPM for component selection.
Calculation
Hydraulic Flow Calculation
Hydraulic flow calculation supports HPU design, cylinder speed checks, motor speed estimates, valve sizing, heat generation, filtration, and oil cooler selection.
Method
How to Calculate Hydraulic Flow
Enter pump displacement in cc/rev or in3/rev.
Enter pump shaft speed in RPM.
Apply volumetric efficiency to account for leakage.
Convert the result into LPM or GPM for hydraulic components.
Rate
How to Calculate Hydraulic Flow Rate
LPM = cc/rev x RPM x efficiency / 1000
GPM = LPM x 0.264172.
This formula applies to positive-displacement hydraulic pumps when displacement, speed, and volumetric efficiency are known.
System
How to Calculate Hydraulic System Flow
Hydraulic system flow depends on pump output, valve positions, actuator demand, leakage, oil temperature, viscosity, pressure drop, and restrictions in hoses, filters, manifolds, and heat exchangers.
Formula
Hydraulic Flow Formula
Q = D x N x eta
Flow equals displacement times speed times volumetric efficiency.
Equation
Hydraulic Flow Equation
Q = A x v
For cylinders and pipes, flow can also be expressed as area times velocity.
Units
Hydraulic Flow Rate Units
| Unit | Meaning | Hydraulic Entity |
|---|---|---|
| LPM | Liters per minute | Metric hydraulic systems |
| GPM | Gallons per minute | US hydraulic systems |
| cc/rev | Displacement | Pumps and motors |
| RPM | Rotational speed | Electric motors and engines |
System
Hydraulic System Flow Rate
Hydraulic system flow rate controls actuator speed, motor RPM, valve sizing, filtration flow, cooling demand, pressure losses, and heat generation.
Pumps
Hydraulic Flow for Pumps
Hydraulic flow for pumps depends on gear pump, vane pump, or piston pump displacement, RPM, volumetric efficiency, leakage, oil viscosity, and pressure.
Cylinders
Hydraulic Flow for Cylinders
Hydraulic flow for cylinders determines extension and retraction speed. Use piston area, rod area, stroke length, and flow rate to estimate cylinder motion.
Pipes
Hydraulic Flow for Pipes
Hydraulic flow for pipes should be checked against pipe ID, hose size, velocity, pressure drop, oil viscosity, Reynolds number, and fitting losses.
Systems
Hydraulic Flow for Hydraulic Systems
Hydraulic flow for hydraulic systems ties together pumps, valves, cylinders, motors, filters, coolers, reservoirs, accumulators, and manifolds.
Hydraulics
Flow Rate in Hydraulics
Flow rate in hydraulics determines speed, while pressure determines force or torque. Both are needed to calculate hydraulic power.
Comparison
Hydraulic vs Flow Rate
Hydraulic describes the fluid power system; flow rate describes how much oil moves per unit time. Hydraulic performance also depends on pressure, viscosity, temperature, and component efficiency.
FAQ
Hydraulic Flow Calculator Questions
What does the hydraulic flow calculator calculate?
It estimates hydraulic pump flow from displacement, pump speed, and volumetric efficiency for hydraulic power units, cylinders, motors, and industrial fluid power systems.
What is the hydraulic flow formula?
A common pump formula is LPM = cc/rev x RPM x efficiency / 1000. The result can be converted to GPM with GPM = LPM x 0.264172.
How do I calculate hydraulic flow rate?
Use pump displacement, shaft speed, and volumetric efficiency for pump output. For pipe flow, use area x velocity.
Which units are used for hydraulic flow?
Common hydraulic flow units include LPM, GPM, m3/h, cc/rev, in3/rev, and sometimes kg/s when mass flow is required.
Can hydraulic flow calculate cylinder speed?
Yes. Cylinder speed depends on hydraulic flow and piston area. Rod-side and cap-side areas must be handled separately.
Does pressure change hydraulic flow?
Pressure does not directly define flow by itself, but it affects leakage, pump load, valve pressure drop, heat, and available power.
What entities matter in hydraulic system flow?
Important entities include Parker, Eaton, Bosch Rexroth, Danfoss, hydraulic pumps, cylinders, motors, valves, hoses, oil viscosity, pressure, and temperature.