Which devices are stepper motors usually used in?

Primarily, there are three broad categories of stepper motors— variable reluctance, permanent magnet, and hybrid.

Various types of linear stepper motors have been devised by stepper motor manufacturers over the last few years mainly based on requirements such as fitment in compact spaces and more. To further categorize, linear stepper motors are the primary type, and their sub types have mainly evolved from this one.

Stepper motors are used in a wide range of industries from manufacturing and security to medical and electronics. Here are some application areas of stepper motors:

Automated machine tools

Automotive gauges

Surveillance equipment such as cameras

Zooming functions in digital cameras

Medical imagers and samplers

Blood analysis machines

Dental photography equipment

Fluid pumps

Respirators

Hospital beds

Stretchers and incubators