Optical Rotary Encoder！

The most common class of encoders is the industrial encoder. An industrial encoder can take punishing operating environments almost as well as heavy duty encoders – rough factories with contamination from dust, particulates, and moisture, in addition to moderate shock and temperature. An industrial encoder offers excellent speed and positioning performance. The class of industrial encoders is versatile.

Servo encoders, unlike both heavy duty and industrial encoders, actually reside inside a motor housing. Because it is in a contained environment, it doesn’t have strong sealing, but it has excellent temperature resistance and reliable shock/vibration resistance (which fits its operating environment). Because of its location, server encoders are smaller and are made for small to mid-sized motors, especially servo and stepper motors.

Light duty encoders are used in more consumer-facing applications like office electronics (copiers, faxes, and computer accessories) and laboratory and medical equipment. These have “people-friendly” environments, meaning conditions are very controlled. Likewise, light duty encoders have good (but not demanding) performance for temperature, shock/vibration, and sealing, with better speed performance and high precision.

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