2019年5月25日星期六

What is a torque motor?

What is a torque motor?

Rotational electric motors have been around for ages but a lot has changed since then. How did electric motors change? What innovations have been made? Torque motors have benefitted greatly from the knowledge gained making linear motors.

Utilizing a brushless 3-phase design they can provide even greater efficiency and power, especially at low rpm. Meanwhile minimizing maintenance requirements.

What is a torque motor
What is a torque motor

Torque motors excel in their ability to directly drive applications. There’s no need for a transmission/gearbox. The moving rotor of the torque motor is glued or clamped directly on the driven part. Throughout the rev-range a high continuous torque is available.

Required torque and available space help determine the diameter and width of the motor. Motors can be very slim but large in diameter (large axles and turntables) or have a ‘height’ close to their diameter, resulting in a compact but high-torque motor.



FEATURES

All torque motors, large or small, follow a similar design. Important characteristics of the torque motor are:

3-phase synchronous
Brushless and maintenance free
Permanent magnet rotor (4+ poles)
Direct drive
High level of control
Low mass

Because of their high torque delivery and no inertia-mismatch, torque motors do not require gearboxes or transmissions. The rotor of a torque motor can be directly mounted to an axle. This can even be a hollow axle, reducing the rotating mass and increasing mechanical efficiency.

Torque motors are used in a wide variety of products. From rotary tables to robotic arms. Do you have an application that might benefit from a torque motor? Contact our HSMAG sales team for more information.

In the next torque note we will discuss the installation of torque motors.

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