Torque, also known as torque, is often used in product development to the motor torque parameters.

So when designing a product, how can you know how much torque is needed?

Example:

In Figure 1, an object that can weigh 1 kg is developed to rotate on a disc with a diameter of 2CM. If the weight of the disc is ignored, the motor torque required at this time = object weight * force arm (radius)

That is, torsion Torque=1kg*1CM=1kg.cm

When we know the torque parameters, the torque of 1KG.CM can only be that the motor just rotates and the speed is very low. A product must need to rotate the disc and require a certain speed effect.

In Figure 2, the required effect is that the disc rotates at a speed of 50 RPM, so the output power of the required motor is 0.51W (efficiency of the gearbox), and when the efficiency of the motor is 70%. Then the power consumption of the motor is 0.51/70%=0.728w

After reaching the conclusion, you can choose the right motor.