Oregon Harvester - Hydraulic Pump Information; Hydraulic Pump Definitions and Calculations; Hydraulic Pump Output Flow

Drive Sprocket
Mechanical Timber Harvesting Handbook 98
Hydraulic Pump Information
Definitions
Hp = Horsepower eff. = Efficiency
RPM = Revolutions per minute psi = Pounds per square inch
d = Displacement,
cubic inches
GPM = Displacement,
cubic inches
T = Torque
Pump Calculations
Hp =
GPM x psi
1714 x eff. (pump)
or Hp = .000583 x GPM x psi
eff. (pump)
Hp =
T x RPM
5252
Torque (lb.-ft.)
or Hp = T x RPM
63025
Torque (lb.-ft.)
Hp = volts x amperes
745.7
Pump Output Flow
GPM =
RPM x d
231 cu. in.
1 gal. = 231 cu. in.