Why are Magnetic Encoders heavier duty than Optical Encoders?！

Why are Magnetic Encoders heavier duty than Optical Encoders?

Quite simply: optical encoders are vulnerable to three kinds of damage

• The optical disk may shatter during vibration or impact.
• The bearings fail due to stresses.
• Oil, dirt, or water get inside the encoder due to seal failure.

Most styles of encoders come sealed from the factory. Over time temperature cycling causes pressure changes and seals fail, which creates a path to the inside of the encoder. Often, the cause of the problem is simply moist air which enters the encoder and then condenses, rains, or freezes inside the encoder.

Why do contaminants (dirt, oil, water…) cause optical encoder failure, and not magnetic encoder failure?

Optical encoders need to see tiny lines on a disk accurately; they make optical errors when there is any type of contamination on the disk. Magnetic encoders do not make errors due to contamination.

Roundss encoders are designed to reduce the causes of optical encoder failure, they feature Wide-Gap technology to eliminate sensor crashes. Use only shatterproof optical disks. They use superior seals to keep contamination out and withstand a greater range of temperatures than the competition.

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