Leading Rotary Encoder Manufacturer

Changzhou Perpetual electronic technology co.,ltd is a leader in the design and manufacture of robust, reliable, and high quality industrial grade rotary encoders serving customers on a global basis.

We main produce 11mm,12mm and 16mm three kinds,they can with switch and without switch.

Types of Rotary Encoder

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We provide custom solutions to all our customers and offer free rotary encoder samples that you can take advantage of.

What Is A Rotary Encoder?

A rotary encoder (shaft encoder) is an electro-mechanical device, used to change the motion of a shaft, angular position of a rotary shaft. This encoder generates an electrical signal based on the rotating movement like either analog or digital.
These are used in a variety of applications where control or monitoring is required like robotics, industrial controls, photographic lenses, input devices of computers like trackballs, optomechanical mice, controlled stress rheometers, etc.
The rotary encoder construction can be done by using different parts like encoder shaft, code disc or rotary disc including labels, source of light including electronic board, receiving IR photosensor, Optical-mechanical block including gears, electronic board with digital interface converters & signal processors.

What Are The Applications Of Rotary Encoder?

Rotary encoders are used in a wide range of applications that require monitoring or control, or both, of mechanical systems, including industrial controls, robotics, photographic lenses, computer input devices such as optomechanical mice and trackballs, controlled stress rheometers, and rotating radar platforms.
The applications of rotary encoder include the following:

These are used where speed, direction, acceleration, and monitoring rotation rate are required.
These are used in different industries like material handling, packaging & conveyor.
In the automation field, these encoders are utilized as sensors for speed, angle, acceleration & position.
These are used to measure linear motion by using gear racks, spindles, cable pulls, or measuring wheels.
These encoders are used to change a mechanical input to electrical signals by using tachometers, counters, PLC systems & PCs in industries.
These are used in packaging, assembly machines, indication systems, printers, CNC machines, testing machines, robotics, textiles, motor feedback, medical equipment, drilling, and labeling machines.

How Does An Rotary Encoder Work?

An rotary encoder is a type of position sensor used to measure the rotating shaft’s angular position.
Thus, this is all about an overview of a rotary encoder and its working. These encoders will fail in some harsh conditions. In such situations, there are mainly three common causes of encoder failure like contamination of liquid, mechanical bearing overload & output failure of the signal. So, the rotary encoder will stop functioning or the system will function randomly.

Your Expert Potentiometer Supplier

Welcome To Visit Perpetual Electronic Factory

Changzhou perpetual electronic technology Co., LTD., founded in 2016, is a professional production of various types of potentiometer, encoder, export-oriented enterprises. Company since its inception, to establish "people-oriented" strategy to promote the development of enterprise, continuous innovation to improve enterprise competitiveness. The company has advanced automatic production equipment and well-equipped production team.

With the development trend of the international market, the company products have all reached the requirements of "ROSH" instruction. The varieties of more than 20 series, more than 100 specifications.

Cooperation Process

  • Step.1

    Send your inquiry
  • Step.2

    Quote price
  • Step.3

    Negotiate price and lead time
  • Step.4

    Sign the contract
  • Step.5

    Payment and production
  • Step.6

  • Step.7


Rotary Encoder FAQ

We have compiled the most frequently asked questions about our rotary encoders here for your convenience, but please feel free to contact us if you have any additional questions.

Factory FAQ

  • Q How is your payment terms?

    A Send us your orders and will provide you the quotation.From there we can discuss the payment terms,our mainly payment terms is 30% in advance,balance before shipment.
  • Q Are you the manufacturer?



    Yes!Perpetual making over 100 varieties of products, specializing in the production of carbon potentiometer, wire wound potentiometer, rotary encoder,rotary band switch and so on.

  • Q What is Potentiometer?


    A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider.[1] If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

    The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

    Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. It is also used in speed control of fans. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load.

Contact Us To Discuss Your Unique Potentiometer & Encoder Needs

We are a professional production of various types of potentiometer, encoder, export-oriented enterprises.


Contact Us
  Lijia Town,Wujin District, Changzhou City, Jiangsu Province, China