Greater performance for your linear and rotary motors

Encoders with added functionality create new possibilities for machines and production equipment. They can even unlock new applications requiring greater acuracy or more rigorous process reliability. Encoders from HEIDENHAIN and its brands AMO, ETEL, NUMERIK JENA, RENCO, and RSF give you a comprehensive selection of solutions matchable to your unique requirements.

New, for small motors:
Inductive rotary encoders for press-fit mounting

Meet the ideal solution for fast, easy, and reliable installation: introducing the new ECI 1119 PressFit (singleturn) and EQI 1131 PressFit (multiturn) absolute rotary encoders from HEIDENHAIN. These new encoders can be used on motors with a flange size as small as 40 mm x 40 mm and an axis height of just 20 mm.


  • Compact design
  • Functional safety
  • EnDat 2.2 serial interface

The new PressFit rotary encoder:
Reliable and automated mounting

A tolerance sleeve is inserted into a precise circular hole in the motor housing. The encoder, with its PressFit flange, is then pressed inside to create a friction fit. Finally, a single central screw fastens the encoder to the motor shaft. This process saves space, permits automated assembly, and allows assembly monitoring via force measurement. These are key benefits of the ECI 1119 PressFit (singleturn) and EQI 1131 PressFit (multiturn) rotary encoders.

The benefits:

  • Automatable mounting
  • Faster installation
  • Wide mounting tolerances

HEIDENHAIN ECN 1325 and EQN 1337: optical rotary encoders with the EnDat 3 interface

With the recent arrival of the HMC 2 hybrid motor cable, the third generation of the EnDat interface has entered the stage. The ECN 1325 and EQN 1337 optical rotary encoders offer space-saving, cost-effective, and high-performance position measurement on the order of angular seconds. The mechanical design of these EnDat 3 rotary encoders is compatible with that of the EnDat 2 devices. Motor manufacturers can now seamlessly transition to the HMC 2 single-cable solution and the EnDat 3 interface technology at any time. And thanks to standardized cable and connector technology, making this transition can save significant time and money. As with all EnDat encoders, the new generation provides all of the necessary information for easy initial setup, monitoring, and diagnostics.

LIC 3100: exposed linear encoder from HEIDENHAIN for highly dynamic axes

The LIC 3100 series is joining the range of existing LIC 4000 and LIC 2000 exposed absolute linear encoders. The LIC 3100 combines very small measuring steps of just 10 nm with axis speeds of up to 600 m/min, delivering high dynamic performance and high-accuracy position measurement for linear axis lengths of up to 10 m.

A large scanning field makes the LIC 3100 highly resistant to contamination. Localized impurities on the measuring standard have minimal effect on the signal quality and measurement reliability. Thanks to their dynamic performance, long measuring lengths, and robustness, the LIC 3100 exposed linear encoders are extremely versatile, bringing the benefits of LIC encoders to even more applications.

Robust and versatile solutions from AMO for large axes and long measuring lengths

A modular design enables a wide variety of integration options for the inductive angle and linear encoders from AMO. These encoders are ideal for specialized applications such as large axis diameters, long travel lengths, and harsh ambient conditions.

  • Highly versatile mechanical design
  • High accuracy and signal quality
  • Extremely forgiving of contamination
  • Long service life thanks to zero wear

RSF: modular encoders for maximum flexibility

Thanks to their modular design, solutions from RSF offer maximum flexibility for integrating linear and angle encoders into your systems. This includes a large number of interfaces to all common numerical controls, as well as a variety of mechanical designs. You also benefit from wide mounting tolerances and convenient encoder installation.

  • The modular MCR 15 (absolute) andMSR 15 (incremental) angle encoders, with scale drum diameters ranging from 50 mm to 350 mm, can be used in many applications for motor position and speed control, including metrology applications.
  • The MC 15 absolute exposed linear encoder makes exact positioning possible in measuring steps of down to 50 nm for measuring lengths of up to 10 000 mm, without needing a reference run.
  • The MS 15 exposed linear encoder lets you put together solutions perfectly matched to your needs thanks to a modular system with up to 20 000 mm-long graduation carriers and scanning heads with measuring steps ranging from 10 µm to 50 nm. Further convenience comes from the encoder's optical homing and limit functions, which can be integrated within the width of the scale.

NUMERIK JENA: linear measurement in tight spaces

With its LIKgo and LIKselect encoders, NUMERIK JENA is offering two new exposed linear encoders specifically designed for limited installation space and high accuracy requirements. 

The stardard-level LIKgo features the essential characteristics needed for electronics industry applications with limited integration space:

  • A small and lightweight scanning head measuring only 28 mm x 13 mm x 7.5 mm and weighing only 10 g
  • Newly developed two-field scanning for excellent accuracy, with a 20 µm grating period and measuring steps of down to 78.125 nm, as well as high signal quality and resistance to contamination
  • Direct output of the interpolated TTL signals from the scanning head without additional electronics and without phase or offset errors
  • Convenient and intuitive installation thanks to wide tolerances
  • Electronic signal adjustment for optimizing the system stability

The new LIKselect supplements the characteristics of the LIKgo with a customer-specific design, bringing the advantages of the Kit L series from NUMERIK JENA to the new generation of LIK linear encoders. The highly configurable LIKselect encoders are ideal for applications with unqiue requirements.

RENCO: the new generation of rotary encoders for stepper and BLDC motors

The new R35i and R35iL encoders from RENCO are incremental rotary encoders without integral bearings. Featuring resolutions of up to 40 000 measuring steps per revolution, they are the ideal feedback systems for stepper motors in closed loop operation and for exact position measurement in measuring machines such as laser scanners.

Strengths and beneifts:

  • Quick and easy installation thanks to an intergral mounting aid
  • Electronic adjustment of the motor commutation signals at the press of a button
  • Safe and reliable operation thanks to monitoring and diagnostic functions never before implemented as such in incremental rotary encoders
  • Exact measurement of the rotor position for BLDC motors and highly accurate delivery of the UVW track sequence for commutation in motors with up to 32 motor pole pairs

For extremely limited installation space, RENCO offers the R35iL. It is one of the smallest rotary encoders currently on the market, with a profile of just 8.6 mm.

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