Torque motor a strong brushless direct drive
The maximum torque you can get

Of course, every rotary motor generates torque. This raises the legitimate question of why there is now a torque motor. Well, that's easy to answer. Torque motors are designed primarily to generate maximum torque at a comparatively low speed. So if you need a higher torque, then choose a torque motor.

Characteristically, torque motors have more poles and a larger diameter than other servo motors. This combination allows them to generate more torque per volume and weight than conventional BLDC motors with a similar volume and weight. You also benefit from the resulting low cogging torque, which improves synchronization, among other things.

In addition, the torque motor design allows for a large inner diameter, which can be an advantage if you need to guide light (e.g. a laser beam), cables or piping through the center of the driven axis. The large diameter also enables very accurate position sensing if the measuring scale also uses the large diameter.