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heidenhain rotary encoders for robots

Heidenhain to unveil new rotary encoders for robots

Heidenhain will be presenting new encoders designed specifically for the requirements of the robotics, medical technology, and drive technology industries at the upcoming SPS IPC Drives show. 

The company says the drives offer “significantly higher accuracy for robots”.

Heidenhain will present the ECI 4000 absolute inductive rotary encoder for hollow shaft diameters of 180 mm. 

The company says that not only is this encoder robust and accurate, but, as a modular system with a scale drum and a separate scanning unit, it also features “ideal mounting characteristics for use in robots”.

The ECI 4000 rotary encoder, as well as Heidenhain’s ECA 4000 angle encoder and the WMRA from AMO, significantly improve the absolute position accuracy of the tool center point on industrial robots by up to 70-80 per cent.


The new encoders also offer accuracy in the healthcare technology sector.

Of particular importance for medical technology machines and systems is the gentle and safe handling of patients and examination equipment.

This includes, for example, being able to move a patient table or examination chair as smoothly as possible during an examination.

Motion control plays an important role in the precise control of a CT scanner’s X-ray system, as well as linear accelerator in radiation therapy.

For this, Heidenhain says it will be presenting linear and angle encoders that meet this industry’s special needs, including the LIC 4000 absolute linear encoder and the ECI 4000 inductive rotary encoder for a hollow-shaft diameter of 90 mm.

Heidenhain will also demonstrate inductive rotary encoders for highly dynamic drives.

The inductive rotary encoders titled ECI/EQI 1100 without bearing (diameter of 37 mm) and ECI/EQI 1300 (diameter of 65 mm) provide position feedback in highly dynamic applications, says Heidenhain.

The new encoders’ strengths include providing high control quality and system accuracy as well as high resistance to vibrations and electromagnetic influences. All variants support safety integrity level SIL 2, category 3 PL d.