Earth Bondhon
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Md Jony Islam Author
Md Jony Islam
CalculatorToolsProjectExpert
Reviewers
Małgorzata Koperska, MD Steven Wooding
Last updated: October 7, 2025

Hoist Motor Power Calculator | Lifting Load and Motor Selection

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Hoist Motor Power Calculator

Calculate the required hoist motor power based on load, lifting height, and speed. Ideal for selecting motors for cranes, lifts, and material handling systems.

Hoist motor power calculator:

Hoist Motor Power Calculator is a calculator that is used to determine the amount of motor power necessary to propel a load at a given speed and efficiency. It assists in the choice of the right motor needed in cranes, hoists, and winches so that they operate in a safe and efficient manner.

Electric hoist power Formula:

A Hoist Motor Power Calculator estimates the power required for lifting systems such as cranes, hoists, and winches. Motor power depends on load weight, lifting height, lifting speed, and hoist efficiency. The formula used is:

\[ P = \frac{F \times \nu}{\eta} = \frac{m . g .\nu}{\eta} \]

where m is load mass, g is gravity, v is lifting speed, and η is hoist efficiency. By entering these values, the calculator provides motor power in kilowatts or horsepower. This tool is essential for engineers, technicians, and material handling designers to ensure the selected motor can safely lift loads without overheating or overloading, optimizing energy usage and improving equipment longevity. Low-competition keywords like “hoist motor power calculator” and “lifting motor power” help target specific users searching for hoist sizing solutions.

⚡ Work & Installation (Input → Output):

Inputs:

  • Load weight m (kg)
  • Lifting speed v (m/s)
  • Hoist efficiency η (%)
  • Optional: gravity g (m/s², default 9.81)

Process / Work:

  • Enter load, speed, and efficiency.
  • Calculator applies \( P = \frac{F \times \nu}{\eta} = \frac{m . g .\nu}{\eta} \)
  • Outputs required motor power in kW or HP.

Outputs:

  • Motor power in kW / HP
  • Optional: factor of safety adjustments

Installation Notes: Proper motor sizing ensures safe hoist operation. Consider duty cycle, environment, and mechanical losses. Correct wiring, protective devices, and maintenance guarantee long-lasting hoist performance.

Testing & Final Adjustments:

Install the hoist and then check the hoist using the rated motor under different loads. Lift speed and current to ensure That performance is equal to calculated power. Regulate gear ratios, tension, or motor settings in case the actual load is greater than the motor capacity. Test for excessive heating, excessive vibration, or excessive noise. Hoist brakes and limit switches, and safety devices should be operating. Result(s) of document testing as regards compliance and future maintenance. It is ensured by proper testing to confirm that there is adequate motor power, operation is safe. efficient, and reliable.

Frequently Asked Questions - Hoist Motor Power Calculator:

What is a hoist motor power calculator?

It calculates the required motor power to lift a load at a given speed and efficiency.

Which parameters are needed?

Load weight, lifting speed, and hoist efficiency.

What is the basic formula used?

P = (m × g × v) / η, where m = load, g = gravity, v = speed, η = efficiency.

Can it calculate power in HP?

Yes, the calculator can output motor power in kW or horsepower.

Why is hoist efficiency important?

It accounts for mechanical and electrical losses in the system.

How to account for safety factor?

Multiply the calculated power by 1.2–1.5 depending on duty and load.

Is it suitable for cranes and lifts?

Yes, ideal for material handling equipment like hoists, cranes, and winches.

Can I include pulley systems?

Yes, adjust efficiency to include mechanical transmission losses.

Why test motor under load?

To ensure actual performance matches calculations and avoids overload.

Can it be used for both AC and DC motors?

Yes, the power calculation applies to both motor types with efficiency considered.

Md Jony Islam

Md Jony Islam

CalculatorToolsProject

Founder of Earthbondhon.com

a free online tools website designed to make everyday and engineering-related calculations easier for students, professionals, and hobbyists. The site offers a wide range of basic calculators across key categories, including Electrical Calculators, Electronic Calculators, and Time & Date Calculators.