Heidenhain 894602-01 (DA 400) Compressed-Air Filter System

Technical Specifications & Overview

The Heidenhain 894602-01 (DA 400) is a multi-stage compressed-air filter unit engineered to clean and regulate sealing air for optical encoders. Designed to prevent internal contamination from dust, water, and oil vapors, this assembly features three filtration stages—a prefilter, a fine microfilter, and an activated carbon filter—alongside an integrated pressure regulator and gauge to maintain optimal purging conditions on sealed encoder systems.

Key Technical Characteristics

• Manufacturer: Heidenhain

• Part Number / ID: 894602-01

• Series / Model: DA 400

• Device Function: Compressed-air purification and pressure regulation system

• Filter Stages: Prefilter (5 µm particle removal), Fine filter (0.01 µm filtration), Activated carbon filter (oil vapor absorption)

• Operating Pressure Range: 0.8 bar to 14 bar ($0.8 \times 10^5\text{ Pa to } 14 \times 10^5\text{ Pa}$)

• Adjustable Output Pressure: 0.5 bar to 3 bar ($0.5 \times 10^5\text{ Pa to } 3 \times 10^5\text{ Pa}$)

• Maximum Flow Rate: Up to $360\text{ l/min}$ ($21.6\text{ Nm}^3/\text{h}$)

• Air Purity Rating: ISO 8573-1:2010 Class 1/4/1 (output)

• Pneumatic Connections: G 1/4″ inlet and outlet ports

Applications & Industrial Integration

Used to deliver ISO-compliant sealing air directly to sealed linear and rotary encoders, the Heidenhain 894602-01 system enhances protection against harsh shop-floor contaminants:

• Sealing air conditioning for Heidenhain sealed linear and angle encoders

• Contamination prevention in CNC machine tool enclosures subject to coolant spray and swarf

• Protection for optical measuring scales operating in high-humidity or oily environments

• Air distribution setups supporting up to 10 connected encoder units

Commercial Assistance & Sourcing

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