Absolute Rotary Encoders with Integral Bearing and Mounted
Stator Coupling

From left to right: ECN 413, EQN 425, ECN 1313, EQN 1325

HEIDENHAIN's ECN/EQN rotary encoders have an integral bearing and a mounted stator coupling. The encoder shaft is connected directly to the measured shaft. During angular acceleration of the shaft the stator coupling must absorb only that torque resulting from friction in the bearing. ECN/EQN rotary encoders therefore display high dynamic performance and high natural frequencies.

Selection aid: ECN and EQN product families

Shaft	Model	Protection
Hollow shaft	ECN 413 EQN 425 Singleturn Multiturn	IP 64 IP 64
Taper shaft	ECN 1313 EQN 1325 Singleturn Multiturn	IP 40 IP 40