Hydraulic Calculator

This library performs basic hydraulic (fluid power) calculations.

Installation

npm install hydraulic-calculator

Usage

const hydcalc = require('hydraulic-calculator')

Pump Flow

Calculate the output flow for a pump. Answer in lpm or gpm

hydcalc.pumpFlow(options);

options

• displacement: Displacement of pump in cc/rev or in3/rev
• speed: Speed of pump in RPM
• unitType: Metric or imperial
• round: Round answer to nearest decimal [default 2]
• efficiency: Efficiency of pump [default 1]

Example:

hydcalc.pumpFlow({
      displacement: 20,
      speed: 1500,
      unitType: "metric",
      round: 1,
      efficiency: .95
})
// Will return
Object {
  result: "28.5"
}

Pump Displacement

Calculate the displacement of a pump

hydcalc.pumpDisplacement(options);

options

• flow: Flow in lpm or gpm

• speed: Speed of pump in RPM

• unitType: Metric or imperial

• round: Round answer to nearest decimal [default 2]

• efficiency: Efficiency of pump [default 1]

  Example:

hydcalc.pumpDisplacement({
      flow: 40,
      speed: 1500,
      unitType: "metric",
      round: 3
})
// Will return
Object {
  result: "26.667"
}

Pump Pressure

Calculate the output pressure of a pump

hydcalc.pumpPressure(options);

options

• flow: Flow in lpm or gpm
• power: Power of prime mover in kW or hp
• unitType: Metric or imperial
• round: Round answer to nearest decimal [default 2]
• efficiency: Efficiency of pump [default 1]

Example:

hydcalc.pumpPressure({
      flow: 25,
      power: 10,
      unitType: "metric",
      round: 2,
      efficiency: .85
})
// Will return
Object {
  result: "204.00"
}

Input Power

Calculate the input power for a pump. Answer in kW or hp

hydcalc.inputPower(options);

options

• flow: Flow in lpm or gpm
• pressure: Pressure in bar or psi
• unitType: Metric or imperial
• round: Round answer to nearest decimal [default 2]
• efficiency: Efficiency of pump [default 1]

Example:

hydcalc.inputPower({
      flow: 20,
      pressure: 185,
      unitType: "metric",
      round: 1
})
// Will return
Object {
  result: "6.2"
}

Motor Torque

Calculate the shaft torque of a hydraulic motor. Answer in Nm or lb-in

hydcalc.motorTorque(options);

options

• displacement: Displacement of motor
• pressure: Pressure in bar or psi
• unitType: Metric or imperial
• round: Round answer to nearest decimal [default 2]
• efficiency: Efficiency of motor [default 1]

Example:

hydcalc.motorTorque({
      displacement: 180,
      pressure: 185,
      unitType: "metric",
      round: 1
})
// Will return
Object {
  result: "530.3"
}

Motor Speed

Calculate the shaft speed of a hydraulic motor. Answer in RPM

hydcalc.motorSpeed(options);

options

• flow: Flow in lpm or gpm
• displacement: Displacement of motor
• unitType: Metric or imperial
• round: Round answer to nearest decimal [default 2]
• efficiency: Efficiency of motor [default 1]

Example:

hydcalc.motorSpeed({
      flow: 45,
      displacement: 185,
      unitType: "metric",
      round: 1
})
// Will return
Object {
  result: "243.2"
}

Motor Displacement

Calculate the displacement of a hydraulic motor. Answer in cc/rev or in3/rev

hydcalc.motorDisplacement(options);

options

• flow: Flow in lpm or gpm
• speed: Speed in RPM
• unitType: Metric or imperial
• round: Round answer to nearest decimal [default 2]
• efficiency: Efficiency of motor [default 1]

Example:

hydcalc.motorDisplacement({
      flow: 15,
      speed: 200,
      unitType: "metric"
})
// Will return
Object {
  result: "75.00"
}

Motor Power

Calculate the output power of a hydraulic motor. Answer in kW or hp

hydcalc.motorPower(options);

options

• torque: Torque of hydraulic motor in Nm or lb-in
• speed: Speed of hydraulic motor in RPM
• unitType: Metric or imperial
• round: Round answer to nearest decimal [default 2]
• efficiency: Efficiency of motor [default 1]

Example:

hydcalc.motorPower({
      torque: 200,
      speed: 200,
      unitType: "metric"
})
// Will return
Object {
  result: "4.19"
}

Cylinder Extend Speed

Calculate speed of an extending cylinder. Answer in mm/sec or in/sec

hydcalc.cylExtendSpeed(options);

options

• flow: Flow in lpm or gpm

• bore: Diameter of bore in mm or in

• unitType: Metric or imperial

• round: Round answer to nearest decimal [default 2]

  Example:

hydcalc.cylExtendSpeed({
      flow: 10,
      bore: 5,
      unitType: "imperial"
})
// Will return
Object {
  result: "1.96"
}

Cylinder Retract Speed

Calculate speed of a retracting cylinder. Answer in mm/sec or in/sec

hydcalc.cylRetractSpeed(options);

options

• flow: Flow in lpm or gpm

• bore: Diameter of bore in mm or in

• rod: Diameter of rod in mm or in

• unitType: Metric or imperial

• round: Round answer to nearest decimal [default 2]

  Example:

hydcalc.cylRetractSpeed({
      flow: 10,
      bore: 5,
      rod: 1,
      unitType: "metric"
})
// Will return
Object {
  result: "8841.95"
}

Cylinder Extend Force

Calculate the force of an extending cylinder. Answer in N or lbf

hydcalc.cylExtendForce(options);

options

• pressure: Pressure in bar or psi

• bore: Diameter of bore in mm or in

• unitType: Metric or imperial

• round: Round answer to nearest decimal [default 2]

  Example:

hydcalc.cylExtendForce({
      pressure: 10,
      bore: 50,
      unitType: "metric"
})
// Will return
Object {
  result: "1963.49"
}

Cylinder Retract Force

Calculate the force of a retracting cylinder. Answer in N or lbf

hydcalc.cylRetractForce(options);

options

• pressure: Pressure in bar or psi

• bore: Diameter of bore in mm or in

• rod: Diameter of rod in mm or in

• unitType: Metric or imperial

• round: Round answer to nearest decimal [default 2]

  Example:

hydcalc.cylRetractForce({
      pressure: 1000,
      bore: 5,
      rod: 1,
      unitType: "imperial"
})
// Will return
Object {
  result: "18849.50"
}