Hydra-Dyne :

Hydr. Cylinders
Hydr. Motors
Formulas 1
Formulas 2
Formulas 3
Formulas 4

Note: Calculation Inputs are marked with bold titles and a red border on text fields. Please use the tab key to move between fields.

Cylinder Key

Cylinder Extend

Extend Force Required (pounds)
Extend Pressure (PSI)
Extend Speed (Inches/Min)
Extend Flow (GPM)
Return Flow Out Rod Side (GPM)
Cylinder Extend Area (in²)
Extend / Retract Area Ratio (%)
Cylinder Extend Volume (in³)
Cylinder Extend Volume (gal)

Cylinder Retract

Retract Force Required (pounds)
Retract Pressure (PSI)
Retract Speeds (inches/min)
Retract Flow (GPM)
Return Flow Out Cap Side
Cylinder Retract Area (in²)
Retract / Extend Area Ratio (%)
Cylinder Retract Volume(in³)
Cylinder Retract Volume(gal)

Sizing Results

Cylinder Rod Area (in²)
Regenerative Extend Force (lbs.)
Regenerative Speed Increase (%)
Regenerative Extend Flow (GPM)

Conversions

IN/SEC =	IN/MIN
FT/SEC =	IN/MIN
FT/MIN =	IN/MIN

Cylinder Summary:

Note: Calculation Inputs are marked with bold titles and a red border on text fields. Please use the tab key to move between fields.

Hydraulic Motor Sizing 1

Hydraulic Motor Sizing 2

Motor Torque (in. lbs.) =
Motor Torque (ft. lbs.) =
System Pressure (PSI) =
Displacement (in³/rev)
Speed Required (RPM) =
Volumetric Efficiency (%) =
Required Flow (GPM) =
Motor Horsepower =

Conversions

Pump & Motor Piston Pulsation

Number of Pistons =
Drive Speed (RPM) =
Pulses Per Minute =
Pulses Frequency (Hz) =

Note: Calculation Inputs are marked with bold titles and a red border on text fields. Please use the tab key to move between fields.

Motor Speed

Motor Torque

Displacement (in³/rev)
Pressure (PSI)
Torque (in. lbs)
Speed (RPM)
Horsepower

Cylinder Force

Piston Diameter (in.)
Rod Diameter (in.)
Pressure (PSI)
EXT. FORCE (lbs.)
RET. FORCE (lbs.)
REG. FORCE (lbs.)

Cylinder Speed

Piston Diameter (in.)
Rod Diameter (in.)
Flow (GPM)
EXT. SPEED (in/min.)
RET. SPEED (in/min.)
REG. SPEED (in/min.)

Force

Pressure
Area (in²)
Force (lbs.)

Force (in/min.)
Area (in²)
Pressure (PSI)

Pump Horsepower

Displacement (in³/rev)
Speed (RPM) (in²)
Flow (GPM)

Flow(GPM)
Pressure (PSI)
Efficiency (%)
Horsepower

Note: Calculation Inputs are marked with bold titles and a red border on text fields. Please use the tab key to move between fields.

Torque

Torque (in. lbs.)
Torque (ft. lbs.)

Torque (ft. lbs.)
Torque (in. lbs.)

Horsepower
Speed (RPM)
Torque (in. lbs.)

Torque (in. lbs.)
Speed (RPM)
Horsepower

Torque (in. lbs.)
Distance from Center (in.)
Force (lbs.)

Force (lbs.)
Distance from Center (in.)
Torque (in. lbs.)

Orifice Pressure Drop

Flow (GPM)
Pressure Drop (PSID)
Specific Gravity (.89)
Orifice Coefficient (.62)
Orifice Diameter (in.)

Flow (GPM)
Orifice Diameter (in.)
Specific Gravity (.89)
Orifice Coefficient (.62)
Pressure Drop (PSID)

Orifice Diameter (in.)
Specific Gravity (.89)
Orifice Coefficient (.62)
Pressure Drop (PSID)
Flow (GPM)

Note: Calculation Inputs are marked with bold titles and a red border on text fields. Please use the tab key to move between fields.

Pressure Drop in Pipe

Flow (GPM)
Viscosity (SSU)
Pipe I.D. (inches)
Pressure Drop/Foot

Velocity in Pipe

Flow (GPM)
Pipe I.D. (INCHES)
Velocity (FT/SEC)

Oil Compressibility

Pressure (PSI)
Oil Volume (IN³)
Added Volume(IN³)

Area and Volume

Diameter (in.)
Area (IN²)
Circumference

Lengths (in.)
Width (in.)
Height (in.)
Gallons

Diameter (in.)
Length (in.)
Gallons

Fluid Cv Formulas

Flow (GPM)
Specific Gravity
Pressure Drop (PSID)
Cv Flow Factor

Flow (GPM)
Specific Gravity
Cv Flow Factor
Press Drop (PSID)

Cv Flow Factor
Secific Gravity
Pressure Drop (PSID)
FLOW (GPM)

Note: Calculation Inputs are marked with bold titles and a red border on text fields. Please use the tab key to move between fields.

Accumulator

P1 Initial Pressure
V1 Initial Volume
P2 Final Pressure
V2 Final Volume

Planetary Gear Ratio

# of Ring Gear Teeth
# of Sun Gear Teeth
Gearbox Ratio
Note: Don't Count Planet Gear Teeth

Fan Blade Tip Speed

Fan Speed (RPM)
Fan Diameter (IN.)
Tip Speed (IN/MIN)
Tip Speed (FT/MIN)
Tip Speed (FT/SEC)