What is the starting torque?

Starting torque, also known as breakaway torque or static torque, refers to the amount of torque that is required to overcome static friction and initiate motion of a motor or any rotating object from a standstill. It is the torque produced by a motor when it starts from a stopped or zero-speed condition.

(To better understand starting torque, you may first want to glance at the following items.)

- What is flux vector control?

- What is FOC vector?
- Speed control vs torque control
- What is constant torque for an inverter?
- What is Start - Stop time?
- What are Automatic Ramp and ramp time?
- What is torque boost (torque boots)?
- What is torque control?
- What is V/F (curve) curve?

In Motors:

In the context of motors, starting torque is crucial as it determines the ability of the motor to overcome the initial inertia and start moving. It is usually higher than the torque required to keep the motor running once it has started, known as running or nominal torque.

Calculation:

The starting torque can be calculated using the formula:

Torque (Nm)=Power (W)×9.5488/Speed (RPM)

Where:

Nm is Newton-meters (unit of torque) (What is a Newton-metre (Nm)?)

W is Watts (unit of power) ( what is kw (Watt)?)

RPM is Revolutions Per Minute (unit of speed) (What is RPM?)

In Servo Motors:

In servo motors, starting torque is important as it affects the motor's ability to start moving the load connected to it. Servo motors are often used in applications where precise control of speed, position, and torque is required, and thus, having adequate starting torque is essential to ensure the motor can start moving the load as required by the application.

Importance:

Having sufficient starting torque is important in applications where the load needs to be moved from a standstill, such as in conveyor systems, elevators, and various types of machinery. Insufficient starting torque may result in the inability of the motor to start, leading to operational issues in the system it is driving.

"Torque and motors that produce torque are present in every aspect of our lives, whether in electrical or mechanical forms. We've tried to answer the most frequently asked questions about the torque capacities of electric motors below.

- What is torque motor?

- What is torque?

- What is torque boosting?

- What is torque control?

- What is the difference between torque and power?

- How is torque measured?

- What are the units of torque?

- Why is torque important when selecting a motor?

- What advantages does a high-torque motor provide?

- What disadvantages does a low-torque motor bring?

- How is a balance between torque and speed achieved?

- What is the relationship between torque and horsepower in cars?

- What is a torque curve?

- Why do electric vehicles generally produce high torque?

- How can torque be increased?

- What is the effect of torque on mechanical systems?

- What is the relationship between torque and rotational speed?

- How are motors categorized based on their torque-producing capacity?

- What types of motors produce high torque?

- How is torque control achieved?