How to calculate vibrating screen motor power?

Calculating the motor power of a vibrating screen involves several factors, including the type of screen, the amplitude and frequency of vibration, the size and shape of the screen deck, and the material being processed. Here is a general approach to calculate the motor power for a vibrating screen:

Determine the Screen Type

High Frequency Dehydration Vibrating Screen

Vibrating screens can be classified into horizontal, inclined, or banana screens. The type of screen will affect the calculation.

Identify Screen Parameters

Amplitude (A): The maximum displacement of the screen deck from its rest position.

Frequency (f): The number of oscillations or cycles per unit of time.

Calculate Vibrating Mass

Linear vibrating screen

The vibrating mass on the screen can be calculated using the formula:

m=Weight of the screen deck/g

where g is the acceleration due to gravity.

Calculate Excitation Force

The excitation force can be calculated using the formula:


where ω=2πf.

Determine Motor Power

The motor power (P) can be calculated using the formula:

P=F⋅v/ 1000

​where v is the vibrating speed (usually in m/s).

Consider Motor Efficiency

Arc Vibrating Screen

Take into account the efficiency of the motor. Multiply the calculated power by the motor efficiency factor to get the effective power required.

Here is a step-by-step guide with formulas, but keep in mind that specific details may vary based on the design and specifications of your vibrating screen. Also, it’s important to consult the manufacturer’s guidelines or work with a qualified engineer when making such calculations, as they can provide more accurate and tailored information based on the specific characteristics of the equipment.

More information about vibrating screen motors:

What is a vibrating screen vibrator?

Installation method of vibrating motor of linear vibrating screen