Heidenhain 689681-11 (LC 485) Absolute Sealed Linear Encoder

Technical Specifications & Overview

The Heidenhain 689681-11 is an LC 485 series absolute sealed linear encoder designed with a slimline housing cross section for space-critical applications. Engineered for closed-loop motion control on numerically controlled machine tools, this high-precision scale delivers absolute position measurement via the EnDat 2.2 serial interface without requiring initial reference runs.

Key Technical Characteristics

• Manufacturer: Heidenhain

• Part Number / ID: 689681-11

• Series / Model: LC 485

• Encoder Type: Absolute sealed linear encoder

• Measuring Length (ML): 570 mm

• Accuracy Grade: ±5.0 µm

• Measuring Step / Resolution: Down to 10 nm

• Interface / Output: EnDat 02 (EnDat 2.2) with incremental 1 Vpp signals

• Mechanical Design: Aluminum housing with elastic sealing lips for protection against chips, dust, and fluids

Applications & Industrial Integration

Designed to eliminate thermal and mechanical transfer errors in feed mechanics, the Heidenhain 689681-11 linear encoder is ideal for demanding closed-loop applications, including:

• Milling machines, machining centers, and CNC lathes

• Boring mills and high-precision grinding machines

• Automated indexing axes and direct-drive motion platforms

• Precision production and automated positioning equipment

Commercial Assistance & Sourcing

At AtlanTech Drives, we specialize in high-level commercial guidance for industrial automation components. Contact our expert sales team to verify stock availability, confirm delivery schedules, or request an immediate competitive quote.