| 1
U.S. Gallons: |
| =
231 cubic inches |
| =
4 quarts |
| =
128 ounces (liquid) |
| =
133.37 ounces (weight) |
| =
8.3356 pounds |
|
1 Cubic Foot:
|
| = 7.48 gallons |
| = 1728 cubic inches |
| = 62.4 pounds (water) |
| 1 Bar (Sea Level): |
| = 14.504 PSI |
| = 0.98692 atmosphere |
| = 33.6 foot water column |
| = 41 foot oil column |
| 1 Horsepower: |
| = 33,000 FT lbs per minute |
| = 550 ft lbs. per second |
| = 42.4 BTU per minute |
| = 2545 BTU per hour |
| =746 watts of 0.746 KW |
| 1 PSI: |
| = 2.0416" Hg |
| = 27.71" water |
| = 0.0689 Bar |
| 1 Atmosphere: |
| = 1.013 Bars |
| = 29.912" Hg |
| = 14.696 PSI |
| = 760 mm Hg |
| 1 Barrel Oil = 42 Gallons |
| 1 Foot Water Column = 0.433 |
| 1 Foot Oil Column = 0.377 |
|
| Torque
& Horsepower Relations |
| T
= HP X 5252 DIVIDED BY RPM |
| HP
= T X RPM DIVIDED BY 5252 |
| RPM
= HP X 5252 DIVIDED BY T |
| Hydraulic
Fluid Power Horsepower |
| HP
= PSI X GPM DIVIDED BY 1714 |
| Velocity
of Oil Flow in Pipe |
| V
= GPM X 0.3208 DIVIDED by A |
| (A
is the inside area of the pipe in square inches) |
| Heat
Equivalents of Fluid Power |
| BTU
Per Hour = PSI X GPM X 1.5 |
| Thrust
Force of Any Cylinder |
| T
= A X PSI |
| T
is thrust of force in pounds |
| A
is piston net area in square inches |
| PSI
is gauge pressure |
| Horse
Power to Drive a Pump |
| For
every 1 HP of Drive, the equivalent of 1 GPM at 1500 PSI
can be produced |
| Horsepower
for Idling a Pump |
| To
Idle a pump when it is unloaded will require about 5%
of its full rated horsepower |
| Compressibility
of Hydraulic Oil |
| Volume
reduction is approximately 0.5% for every 1000 PSI of
fluid pressure |
| Wattage
for Heating Hydraulic Oil |
| Each
watt will raise the temperature of 1 gallon of oil by
1 degree Fahrenheit per hour |
| Vehicle
Speed ( Wheel RPM) |
| 336.13
X Miles Per Hour |
| Wheel
Diameter (Inches) |
|
|
Legend
|
| BTU
= British Thermal Unit |
| GPM
= Gallons per Minute |
| HP
= Horsepower |
| mm
HG = Millimeters of Mercury |
| PSI
= Pounds per Square Inch |
| RPM
= Revolutions per Minute |
|
|
