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From the Efficiency Line up to Premium encoders with contactless detection


Encoder Portfolio for Numerous Industrial Applications

Reliably monitor speed or detect position, direction of rotation and angle of rotation — encoders are useful for several industrial measuring tasks. Turck's comprehensive range offers users products such as hollow-shaft and solid-shaft devices as well as models featuring completely contactless and wear-free detection. Turck can help you choose the ideal sensor, whether you are looking for Efficiency encoders for standard applications or Premium encoders with IP67/IP69K protection ratings for harsh environments.

Contactless Encoders

Thanks to the inductive measuring principle, Turck's contactless encoders are wear-free and interference-free as there is no mechanical coupling between the sensor and the positioning element on the shaft. Benefitting from the IP67/IP69K protection rating and able to tolerate shaft offsets (of up to 4 millimeters), these encoders can be used reliably even in the most difficult conditions.

Hollow-Shaft Encoders

Hollow-shaft encoders are conveniently mounted with a torque arm, making them ideal for dynamic applications. Turck offers hollow-shaft encoders with contactless or conventional technology. The devices are available in sizes ranging from 24 to 100 millimeters in diameter, with incremental, singleturn or multiturn output types.

Solid-Shaft Encoders

Solid-shaft encoders mounted with a bellows coupling are less sensitive to vibration and shocks. Turck offers devices with high protection ratings up to IP69 or with double-bearing technology to suit the requirements of your application. Solid-shaft encoders are also a reliable solution for applications that involve measuring wheels.

Everything You Need to Know about Encoders…

The output type and frame size, as well as the shaft type and shaft diameter are key criteria when it comes to selecting an appropriate encoder.

Output Type

Incremental, Singleturn or Multiturn

Incremental, Singleturn or Multiturn

Select the output type of the encoder based on the information required from the sensor.

  • Incremental encoders record a change in angle without referencing the current position, allowing values such as the relative angle position, speed or direction of rotation to be calculated.
  • Singleturn encoders provide information about the current position of the shaft. The encoder generates an absolute value within one revolution of 360°.
  • When the number of axis revolutions also needs to be recorded, a multiturn encoder is required. This device is able to output an absolute value constituting more than one revolution within the detection range.

Shaft Type

Solid Shaft or Hollow Shaft

Solid Shaft or Hollow Shaft

Whether you require a hollow or solid shaft encoder depends on the shaft type of your application. Hollow shaft encoders are generally easier to mount, while solid shaft encoders are the better solution when exposed to constant shocks and vibrations.

  • When a solid-shaft encoder is used, the incoming shaft is typically mounted on the encoder via a bellows coupling. This component bridges any potential mechanical displacement between the shaft and the encoder.
  • When a hollow-shaft encoder is used, the incoming shaft is held in place via a shaft clamp ring to create a connection between the shaft and the encoder. A hollow shaft can be designed as a blind hole or as a conventional hollow shaft.

Shaft Diameter

Precision Fit

Precision Fit

Turck hollow-shaft and solid-shaft encoders accommodating various shaft diameters of between 6 and 42 millimeters are available. This wide range ensures that the incoming shaft is held precisely in place. 

Turck's range of contactless devices is especially flexible and can cover various shaft diameters thanks to the specialized design and variety of adapter sleeves.

Construction Size

The Correct Outer Diameter

The Correct Outer Diameter

The outer diameter of an encoder is generally expressed as the "construction size," for example: Ø 58 millimeters. The requirements of your application will determine the appropriate frame size for your encoder.

Customized Components

In addition to the four basic criteria, the Turck product database gives you an insight into numerous other properties. Filter the product database according to your individual requirements to quickly and easily find the correct encoder for your application.

In the Video: Encoders Facilitate Fully Automated Final Packaging Processes

Turck's encoders are especially useful for automatic final packaging systems where they can be used on the robotic arm, roller conveyor or adhesive tape unwinder. The video highlights the specific advantages of the individual encoder variants.

Contactless Angle Detection

Say goodbye to end position switches: Laempe Mössner Sinto GmbH uses Turck's QR24-IOL encoder to dynamically detect swing movements at its core shooter machines. IO-Link simplifies setup and wiring.


Ask an Expert

Would you like to learn more about the potentials of encoders or are you looking for an individual solution for your company? Then contact our experts for linear and rotary displacement sensors. Fill out the contact form to request the advice you need.

Christian Voß

Director Product Management Linear/Rotary Position Sensors

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