Rotary Encoders

HEIDENHAIN Rotary Encoders

Accurate position and speed for every shaft

A rotary encoder measures the angle and speed of a turning shaft and sends it to your control, drive, or readout. HEIDENHAIN rotary encoders are known for quality, durability, and precision, and their rugged, easy-to-install design has made them a standard on machines and motors around the world.

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HEIDENHAIN ECN/EQN 1300 rotary encoder
Motor feedbackPosition and speed feedback on servo drives and electric motors.View motor feedback encoders → Machine toolsSpindles, rotary tables, and handwheels.View machine tool encoders → AutomationAutomation equipment, robotics, and general machinery.View automation encoders →

How to choose

External rotary encoder
External or internalExternal encoders mount onto machines and motors (up to IP66, up to 100°C). Internal encoders build into motor housings and handle high vibration (up to 120°C, IP40).ExternalInternal
Absolute rotary encoder
Absolute or incrementalAbsolute encoders (ECN, EQN, ROC, ROQ, ECI, EQI, KCI) know their position at power-up. Incremental encoders (ERN, ROD, ERO) count from a reference mark.AbsoluteIncremental
Multiturn rotary encoder
Singleturn or multiturnEQN, ROQ, EQI, and EBI models also count full revolutions.SingleturnMultiturn
Hollow shaft rotary encoder
Shaft and mountingHollow shaft with stator coupling (ECN/ERN), solid shaft with a separate coupling (ROC/ROD), or no integral bearing (ECI/ERO/KCI).
Inductive rotary encoder
Interface and resolutionMatch your control or drive: EnDat, Fanuc, Mitsubishi, 1 Vpp, TTL, or HTL.

See it in action

HEIDENHAIN's video on the KCI 1300 and KBI 1300 inductive rotary encoders for compact motors in robotics.

Replacing an encoder? Send us the ID number from its label with a quote request, or call 1-888-354-2525.

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