How do you calculate the ratio of the fan speed to the pulley? What's the formula for that?
For example: the motor speed is 1400 RPM, the diameter of the belt wheel is 20, the fan speed 40 turns with the belt wheel The motor speed is 1400 RPM, the diameter of the belt wheel is 20, the fan speed 40 and how large is the pulley? Fan pulley diameter = motor pulley diameter * motor speed/fan speed = 20 times 140/40 is 700 centimeters
The formula for calculating the size of the external diameter of the belt wheel for the motor speed of the motor is changed, and the size of the belt wheel is changed Example: 1450 (11 kilowatt 4) X150 (the outer diameter of the pulley) is 980 (11 kw 6) = diameter 200 The 8-inch horizontal mixed flow pump is 3 meters and 5 meters, the diameter of the impeller is 196mm, the 8-inch horizontal mixing pump is 8 meters, the diameter of the impeller is 187mm.
The first thing you need to know is what the rated speed of the fan is and what the power is. And then you know what the speed of the motor is. And 1, if you know that, you're going to calculate the speed ratio of the motor to the fan. To determine the diameter of the wheel, the belt type (e.g. B, C, D, etc.); Number of wheel slots according to power; 4, then the diameter of the fan belt is calculated according to the speed ratio.
