INDUSTRY COMPONENT

Code Disc/Scale

Precision optical or magnetic disc/scale for angular/linear position encoding in industrial automation systems.

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Component Specifications

Definition
A high-precision rotating disc or linear scale with precisely patterned tracks (optical, magnetic, or capacitive) that works with a sensor to convert mechanical position into digital signals for closed-loop control in motion systems.
Working Principle
Operates on photoelectric, magnetic, or capacitive encoding principles where patterned tracks on the disc/scale modulate light, magnetic fields, or capacitance as it moves relative to a sensor, generating phase-shifted signals that are interpolated to determine position with micron-level accuracy.
Materials
Optical glass (borosilicate) with chrome plating for reflective scales, stainless steel (AISI 304/316) for magnetic scales, aluminum alloy for structural components, photoresist coatings for patterning.
Technical Parameters
  • Accuracy ±1 arc-second (rotary) / ±3 μm/m (linear)
  • Max Speed 10,000 RPM (rotary) / 10 m/s (linear)
  • Resolution Up to 0.001 arc-seconds (rotary) / 1 nanometer (linear)
  • Signal Output Incremental (A/B/Z) / Absolute (SSI, BiSS, EnDat)
  • Diameter/Length 20 mm to 500 mm (rotary) / 100 mm to 3 m (linear)
  • Protection Rating IP64 to IP68
  • Operating Temperature -20°C to +85°C
Standards
ISO 16063, DIN 32711, IEC 60068

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Code Disc/Scale.

optical encoder disc linear scale rotary encoder position feedback motion control precision measurement industrial automation Code Disc/Scale Code Disc/Scale in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Position Encoders

Precision measurement devices that convert linear or rotary motion into digital signals for position feedback in multi-axis positioning systems.

View Product Details

Position Feedback Encoders

Precision sensors that provide real-time position feedback for motion control systems.

View Product Details

Position Encoder

A sensor device that converts mechanical position into electrical signals for precise measurement and control.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Contamination leading to signal loss
  • Mechanical wear of bearings/supports
  • Electromagnetic interference in magnetic types
  • Thermal drift affecting accuracy
FMEA Triads
Trigger: Accumulation of dust/oil on optical surface
Failure: Signal degradation or complete loss
Mitigation: Install protective seals, use compressed air cleaning systems, implement regular maintenance schedules
Trigger: Bearing wear in rotary encoders
Failure: Eccentric rotation causing position errors
Mitigation: Use precision bearings with lubrication, monitor vibration levels, implement predictive maintenance

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5 μm for linear scales, ±2 arc-seconds for rotary discs
Test Method
Laser interferometry for linear accuracy, autocollimator for angular accuracy, environmental testing per IEC 60068

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between incremental and absolute code discs?

Incremental discs generate pulses for relative position tracking, requiring a reference point, while absolute discs provide unique position values immediately upon power-up without homing.

How do environmental factors affect code disc performance?

Contamination (dust, oil) can obstruct optical paths, temperature variations cause thermal expansion affecting accuracy, and vibrations may introduce signal noise, requiring proper sealing and mounting.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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