Heidenhain 385438-31 (ERN 431) Incremental Rotary Encoder

Technical Specifications & Overview

The Heidenhain 385438-31 is an ERN 431 series incremental rotary encoder designed for high-precision speed and motion control. Equipped with integral bearings and attached via a stator coupling, this compact optical encoder provides high-resolution feedback for dynamic positioning applications across automated industrial machinery.

Key Technical Characteristics

• Manufacturer: Heidenhain

• Part Number / ID: 385438-31

• Series / Model: ERN 431

• Line Count / Resolution: 1024 lines per revolution

• Output Signal: HTL

• Supply Voltage: 10 V to 30 V DC

• Max. Sampling Frequency: 300.00 kHz

• Shaft Type: 1:10 Taper shaft (9.25 mm functional diameter)

• Coupling Type: Torque arm / wire bracket for M5

• Degree of Protection: IP 64 (EN 60529)

• Operating Temperature: -40 °C to +100 °C

• Electrical Connection: 12-pin contact insert pin

Applications & Industrial Integration

Engineered for precise rotational measurement and angular speed control, the Heidenhain 385438-31 encoder is widely utilized in industrial motion control setups, including:

• Servo motors and feedback drive systems

• CNC machine tools and indexing units

• Automated packaging and printing equipment

• Textile machinery and material handling systems

Commercial Assistance & Sourcing

At AtlanTech Drives, we provide high-level commercial guidance for industrial automation hardware. Contact our sales specialists today to check stock status, confirm delivery lead times, or request an immediate competitive quote.